#bluetoothchip

[blevoice]

KT1025A and Bluetooth Data Transmission: Efficient Applications of BLE and SPP

In today's interconnected world, Bluetooth technology meets not only audio transmission needs but also plays a key role in data transfer. The KT1025A chip offers excellent Bluetooth data transmission features, supporting two main modes: BLE and SPP.

BLE Transparent Transmission: A Power-Efficient Solution

Designed for low-power applications, BLE is ideal for devices requiring long operation times with minimal power consumption. KT1025A supports standard BLE data transmission, ensuring stable connections and data interaction between devices. This makes it a top choice for smart home and health monitoring devices.

SPP Transparent Transmission: A Classic and Reliable Option

Based on the classic Bluetooth protocol, SPP provides higher data transfer rates and stability. It's perfect for applications needing fast and reliable data transmission, such as industrial control and medical data collection.

Flexibility and Reliability in Data Transmission

Whether using BLE or SPP mode, KT1025A ensures efficient and reliable data transmission. The built-in protocol stack handles the complexities of Bluetooth connections, allowing developers to focus on application development.

Practical Application Cases

In smart home systems, KT1025A can connect various sensors and controllers via BLE for seamless communication. In medical devices, SPP mode can transmit high-precision monitoring data, ensuring accuracy and timeliness.

Conclusion

With its BLE and SPP data transmission capabilities, KT1025A provides developers with flexible and powerful tools. It can meet various needs, whether for low-power BLE applications or high-stability SPP transfers, driving the development of innovative products.

[anne-blm]

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REATEK RTL8763BFR solution case.#bluetoothboard #bluetoothheadphones #bluetoothchip #bluetoothmodule https://www.instagram.com/p/Bwx-f0kAH_s/?utm_source=ig_tumblr_share&igshid=x5tpudi60p94

[hacknews]

Spectra Attack Target Separation Between Wireless Communication Chips For Coordinated Attacks #bluetooth #bluetoothchip #bluetoothvulnerability #broadcom #broadcomchip #broadcomvulnerability #bug #flaw #sidechannelattack #sidechannelvulnerability #spectraattack #vulnerability #wifi #wififirmware #wifivulnerability #wirelessattacks #wirelesschip #wirelesscoexistence #wirelesscombochips #hacking #hacker #cybersecurity #hack #ethicalhacking #hacknews

[techmanianl]

Huawei presenteert Watch GT2 smartwatch met eigen chipset

Huawei presenteert Watch GT2 smartwatch met eigen chipset

Huawei heeft twee nieuwe smartwatches gepresenteerd. De Huawei Watch GT2 heeft onder de motorkap een Kirin A1-chipset met een enkele Cortex M7-processorkern, bluetoothchip en audiochip.

Huawei Watch GT2

De Watch GT2 komt in twee smaken. De grote versie met 46mm-behuizing beschikt over een 1,39-inch OLED-scherm met een resolutie van 454 bij 454 pixels. De kleine versie met 42mm-behuizing…

[blevoice]

"Light" Experience in Smart Home: How Does Bluetooth Fill You with Happiness with Low Visibility?

With the rapid development of technology, smart home has gradually entered our lives. The smart home system integrates multiple devices, making home life more convenient, safe, and efficient. In the pursuit of smart life, especially among the young consumer group, Bluetooth technology, with its features of low power consumption, high compatibility, and ease of use, will play an even more important role in the future smart home.

Especially in the context of the surge in Internet of Things (IoT) devices, Bluetooth devices can not only achieve more intelligent connections but also enable remote control and data collection, promoting the further popularization of smart homes. In addition, the continuous development of Bluetooth technology has also enhanced its application potential in smart homes. For example, the introduction of Bluetooth 5.0 has significantly increased the communication range and speed.

Working Principle: The core of Bluetooth technology is short - range wireless communication, which is commonly used for data transmission between wireless devices. It works based on the Frequency - Hopping Spread Spectrum (FHSS) principle. By quickly switching between different frequencies, it ensures the stability and anti - interference of communication. Bluetooth devices can automatically pair within a certain distance and achieve data transmission. This process usually includes the following steps:

Device Discovery: After a Bluetooth device is turned on, it searches for other devices through broadcast signals.

Pairing: After finding the target device, the two devices pair with each other. Usually, user confirmation is required, such as entering a password or clicking a confirmation button.

Data Transmission: After pairing, the devices can conduct encrypted data communication to ensure the security of the transmission.

There are different Bluetooth standards for various usage scenarios. Currently, Bluetooth Classic and Bluetooth Low Energy (BLE) are widely used. The latter, due to its lower power consumption, is particularly suitable for battery - powered smart home devices.

Application Scenarios:

1. Smart Lighting Control: Smart bulbs are one of the most common applications of Bluetooth in smart homes. Users can control the on/off, brightness, and color of the lights through a mobile app. Bluetooth technology allows users to locally control multiple lamps via Bluetooth connection and even automatically adjust the lighting effects according to scenarios, enhancing the home atmosphere.

2.Smart Home Appliances: The application of Bluetooth in smart home appliances is also gradually becoming part of daily life. For example, a smart refrigerator can be connected to a mobile phone via Bluetooth to update food storage information in real - time and recommend recipes to users. A smart washing machine can set washing modes, monitor the washing progress, and even remind users in a timely manner through an app.

3.Security Monitoring System: Bluetooth also plays an important role in security monitoring. Through Bluetooth, users can connect security cameras, door locks, and other devices to an app to remotely monitor home security. When out, users can control the door lock and receive real - time monitoring videos to ensure home safety.

4.Health Monitoring Devices: With the improvement of health awareness, Bluetooth technology has been widely applied to health monitoring devices, such as smart bracelets and weighing scales. These devices connect to mobile apps via Bluetooth to synchronize data, helping users record health data such as heart rate, steps, and weight, providing convenience for health management.

5.Voice Assistants and Automation: Bluetooth technology facilitates the application of smart voice assistants. In a smart home, users can control various Bluetooth - enabled devices through voice assistants, enjoying the convenience of voice operation. In addition, Bluetooth can be combined with other sensors to achieve home automation. For example, when users leave home, the system automatically turns off all Bluetooth - controlled devices to save energy.

Bluetooth Product Recommendation: KT6368A is a Bluetooth chip designed based on the Bluetooth 5.1 protocol version. It has a small size and low power consumption and operates in the 2.4GHz frequency band. This module uses common AT commands to set parameters, with simple and fast operation. It can be applied to scenarios such as smart door locks, smart bike locks, smart homes, consumer electronics, and industrial control.

The application of Bluetooth technology in smart homes has elevated home life to a new level. With the continuous increase in the number of devices and the progress of technology, Bluetooth provides users with convenient and intelligent experiences in smart lighting control, smart home appliances, security monitoring, health monitoring devices, and automation.

Product details, product information, and sample acquisition and ordering links:KT6368A

[blevoice]

⚡ Wireless Weighing & Bluetooth Hacks: The Tech Behind Smart Scales

Say goodbye to tangled cables! 🚫🔌 Our Bluetooth-powered scale project combines BLE + SPP for buttery-smooth wireless data transfer—perfect for makers, hackers, and IoT lovers.

Why it's cool: 🔹 Dual-mode Bluetooth (low-energy + classic) = flexibility 🔹 HID-compatible = works out-of-the-box 🔹 Precision matters → under 1% error margin

🔹 Low Cost 🔹 Ease of Use 🔹 Ultra-small Size 🔹 Simplicity in Production 🔹 Low Power Consumption 🔹 BLE/SPP Data Transmission

It's KT6368 SOP8 Bluetooth Chip.

Bonus hack: The same module can power DIY selfie sticks, game controllers, or even smart home triggers 🤳🎮🏠

👉 Watch the 60-second demo to see it in action!

Want to geek out? Let's talk:

Would Bluetooth mesh work for a network of smart scales?

Best way to visualize live weight data (Python? Web apps?)

[blevoice]

JL (JieLi) Bluetooth TEST Box Button Function Description

Button Function Description

1.Reset Button:

Initiates a reset of the module, restoring it to its initial state.

2.Button B (Prototype Testing):

Triggers the next test item for the B prototype.

The tests cycle in sequence as follows:

Play Song Test → Call Test → Disconnect.

3.Button A (Prototype Testing):

Triggers the next test item for the A prototype.

The tests cycle in sequence as follows:

Play Song Test → Call Test → Disconnect.

4.Disconnect Button:

Short press: Disconnects the current Bluetooth connection.

Long press while connecting a PC cable: Enters Configuration Mode.

[blevoice]

The Mystery Behind JL (JieLi) Audio Bluetooth Chips for 9.9 - Yuan Wireless Bluetooth Earbuds with Free Shipping

Can you believe that there are 9.9 - yuan wireless Bluetooth earbuds with free shipping? Regardless of the quality and sound quality of these earbuds, the fact that they can achieve normal operation of functions such as Bluetooth wireless connection and pairing, earbud audio playback via Bluetooth, and charging case charging at such a low price is undoubtedly an ultimate manifestation of cost - effectiveness and a miracle of Made in China. Now, let's explore the core of these earbuds - JL (JieLi) Audio Bluetooth Chips, and find out what advantages they rely on to help Bluetooth earbud manufacturers achieve this.

1.High - integration Design：JL (JieLi) Bluetooth chips adopt a highly integrated design, integrating multiple functional modules into a single chip. Some chips have a rich built - in driver library, allowing developers to achieve functions like Bluetooth connection and audio codec without adding a large number of additional chips or modules, significantly reducing the overall hardware cost.

2.Self - developed IP Core and Local Supply Chain Cooperation：

Self - developed IP Core：By developing its own IP core, JL (JieLi) reduces its dependence on external intellectual property, thus lowering the intellectual property licensing fees.

Local Supply Chain Cooperation：Collaborating closely with local supply chains such as SMIC, JL (JieLi) takes advantage of the cost - advantage of the local supply chain to compress the chip cost to 60% of that of international giants, laying a solid foundation for low - cost Bluetooth earbud solutions.

3.Mature Production Process：

Advanced Process：Some chips adopt a mature production process. For example, the KT6368A Bluetooth chip is based on a 40 - nanometer process and 12 - inch wafers, which not only improves performance but also effectively controls costs.

Optimized Packaging：The adoption of SOP8 packaging further reduces the development and production costs for customers.

4.Cost Reduction through Mass Production：As of 2023, the cumulative sales of JL (JieLi) Bluetooth audio chips have exceeded 10 billion pieces, with a high market share. Mass production has significantly reduced the unit production cost. As fixed costs are allocated to more products, the cost per chip decreases, creating price space for low - priced Bluetooth earbuds.

5.Rapid Chip Iteration：JL (JieLi) shortens the chip iteration cycle to once every six months. By continuously launching chips with better performance and lower costs, it continuously optimizes product solutions. Each iteration has local breakthroughs, enabling better cost control while improving chip performance to meet the market demand for low - priced products.

6.Simplified Development Process：

Abundant Development Tools：JL (JieLi) chips provide a wealth of development tools and development environments, with built - in hardware accelerators that improve the chip's computing efficiency and data processing speed, reducing the system cost.

Shorter Development Cycle：Developers can carry out product development more conveniently and quickly, shortening the product launch time and reducing development costs, which indirectly reduces the cost of Bluetooth earbuds using JL (JieLi) chips.

The ability to produce Bluetooth earbuds with normal functions at such a price is already an ultimate display of cost - effectiveness and a miracle of Made in China.

Product details, product information, and sample acquisition and ordering links: KT6368A: Bluetooth Chip Product Details

[blevoice]

KT6368A Bluetooth Module - An Efficient Bridge for Data Interoperability in Electronic Medicine Boxes

Key Features of the Core Chip: Dual Benefits of Low Power Consumption and High Compatibility

The KT6368A is a Bluetooth 5.1 chip supporting both SPP + BLE dual-mode, offering stable wireless connectivity to electronic medicine boxes with its SOP8 packaging (pin pitch 1.27mm) and lightweight design.

Key specifications include:

Flexible Dual Mode Switching: Supports both BLE (Low Energy) and SPP (Classic Bluetooth), switchable via AT commands (B4/B5). This allows compatibility with different devices, such as mobile apps using BLE and medical terminals utilizing SPP.

Optimized for Low Power Consumption: The standard KT6368A consumes around 6mA in connection state; the low-power version KT6328A (BLE only) has an average broadcasting current of just 100uA at a broadcast interval of 1000ms, significantly extending battery life.

Stable Communication Performance: With a 24M crystal oscillator (load capacitance 12pF, frequency deviation ≤±10ppm), it ensures RF stability, covering communication distances up to 15 meters, and supports adjusting RF power through AT+BR command (levels 0-9) to fit various environments.

Critical Applications in Electronic Medicine Boxes

Real-time Medication Data Synchronization: After establishing a BLE connection with a mobile app, the medicine box can upload medication records (time, dosage) to the app via UUID "FFF1" characteristics, supporting single packet data transmission of 1024 bytes. MTU negotiation enables bulk file transfers, e.g., historical records synchronization.

Remote Control and Status Query: Users can remotely operate the device via the app:Send “AT+BM” to change the Bluetooth name (e.g., “Grandma’s Medicine Box”)Adjust broadcast intervals by sending “AT+UT” (balancing between power consumption and connection speed)Receive status feedback from the medicine box through “FFF2” characteristics (e.g., “20% Remaining Medication”)

Security and Compatibility Design: Password protection via AT+BE command (4-digit numeric password) prevents unauthorized access in SPP mode. The MAC address embedded in advertising packets solves iOS's inability to directly obtain MAC addresses, facilitating unique device identification.

Advantages in Development and Mass Production

Simplified AT Command Set: Supports quick configuration for common functionalities (e.g., setting baud rate to 115200 with “AT+CT05”, resetting to factory defaults with “AT+CW”), eliminating complex protocol development.

Hardware Design Reference: External antenna wiring is sufficient (length should match PCB layout); recommended crystal oscillators include 3225 package (cost-effective) or M49 (high stability), requiring no additional matching capacitors.

Mass Production Support: Provides Bluetooth test equipment for frequency offset detection (qualified range ±20KHz) and supports tape-and-reel packaging (1000 pieces per reel), suitable for SMT production lines.

Learn more about KT6368A here.

[blevoice]

JL(JieLi) Bluetooth TEST Box Dial Switch Function Description

Dial Switch Function Description

Default Advanced Audio Testing

Call Testing When enabled, the test box connects to the prototype phone's audio, allowing call testing to be performed.

Call Microphone Loopback Testing When enabled, speaking into the prototype's microphone sends audio to the test box, which then relays it back to the prototype, and the prototype's speaker plays the audio.

Quick Testing When enabled, upon connecting to the prototype, the test box triggers the prototype to enter quick test mode. In this mode, the prototype activates its speakerphone function. Speaking into the prototype's microphone results in the sound being played through the speaker. Pressing a key on the prototype plays a key tone. Note: This feature requires the prototype to be on ac690x_sdk2011 or higher. Users must add an indicator light to the prototype to signal entry into this mode, depending on the prototype's configuration.

Frequency Offset Testing When enabled, connecting to the prototype initiates frequency offset testing.

Automatic Frequency Offset Correction When enabled, automatic correction is performed during the frequency offset testing process.

[blevoice]

JL (Jieli) Bluetooth Test Box Comprehensive Guide: Key Steps & Practical Operation

As a leader in Bluetooth audio solutions, Zhuhai Jieli Technology's Bluetooth Test Box is an essential tool for development and production. This guide provides complete operational instructions to streamline your Bluetooth chip testing.

Core Features Overview

The JL (Jieli) Bluetooth Test Box offers:

Dual-device parallel testing capability

A2DP audio playback testing

HFP call function testing

Frequency offset testing with auto-calibration

Wireless firmware upgrade

Rapid test mode

Step-by-Step Operation Guide

1. Power Connection & Initial Setup

Use included 9V power adapter

Verify "Searching" status on both channels upon startup

Confirm correct Bluetooth name display for DUT (Device Under Test)

2. Critical DIP Switch Settings

(Requires reboot after adjustment)

3. Button Functions

Reset: Typically unused

Device B Next: Cycles through music→call→disconnect

Device A Next: Same for second device

Disconnect: Hold while connecting PC cable for config mode

4. Frequency Offset Standards

Real-time offset value displayed

Pass Criteria: Must maintain ±20KHz range

Auto-calibration (Switch 5) optimizes automatically

5. Configuration Tool Workflow

Enter config mode (Hold Button4 + PC cable)

Access CD drive in "My Computer"

Launch bt_test_box.exe

Key parameters:Minimum detectable signal (adjust range)Target device name (accelerates pairing)Max TX power (connection stability)

6. Wireless Upgrade Methods

Method 1: SD Card

Pre-configure target device name

Insert SD card with .bfu file

Auto-upgrades upon connection

Method 2: PC Bluetooth

Navigate to "Device Upgrade" in config mode

Select device or specify Bluetooth name

Load .bfu file to initiate

Troubleshooting Guide

Upgrade Failures:

Display Issues:

Audio File Update:

Pro Tips

Enable both Switch 4 & 5 for precision frequency tests

Maintain 4+ standby devices for batch testing efficiency

Quick test mode requires AC690x_SDK2011+ firmware

For complete technical documentation including:

Detailed user manuals

Schematics & reference designs

Debugging guides

FAQs

Visit our AliExpress store [BLE Voice Store] or contact our engineering team:

📧 info@blevoice.com 📱 +86 159 0279 7635 (WhatsApp/WeChat)

#BluetoothTechnology #AudioEngineering #HardwareTesting #JieliTech #EngineeringSolutions

[blevoice]

KT6368A BLE Bluetooth Chip Application Case Study in Smart Home Scenarios: Smart Lighting Control System

1. Introduction to KT6368A Chip

The KT6368A is a high-performance Bluetooth 5.1 dual-mode module supporting both BLE and SPP protocols. It features low power consumption, high sensitivity, and long-range transmission. Key specifications from the user manual include:

Frequency range: 2.402GHz–2.480GHz

Transmit power: Up to 8dBm

Receiver sensitivity: -94dBm

UART interface communication

Core architecture: 32-bit RISC-V @48MHz

On-chip memory: 64KB SRAM

Configurable via AT commands

These characteristics make it ideal for various smart home applications.

2. Smart Lighting Control System

Use Case: Control home lighting via smartphone app or voice assistant

Implementation:

Integrate KT6368A into smart bulbs or switches

Direct Bluetooth connection from a smartphone or via a gateway

Receive control commands to adjust brightness, color temperature, etc.

Advantages:

Low power consumption for always-on devices

Fast response (<100ms latency)

Supports group control for multiple lights

Reference: Similar to Philips Hue but with a lower-cost solution using KT6368A

3. Smart Lighting System Setup

Hardware Connection:

Software Development:

// Example: Lighting control logic void handle_ble_command(uint8_t cmd, uint8_t value) { switch(cmd) { case CMD_BRIGHTNESS: set_pwm_duty(value); // Adjust brightness break; case CMD_COLOR_TEMP: adjust_color_temp(value); // Modify color temperature break; // Other commands... } }

AT Command Configuration:

AT+NAME SmartBulb_01 // Set device name AT+ROLE=SLAVE // Slave mode AT+ADVINT=500 // 500ms advertising interval

Mobile App Development:Use Android/iOS Bluetooth APIs to connect to KT6368AImplement control UI and scene modes

4. Key Benefits

Cost-Effective: 30% lower hardware cost vs. Wi-Fi solutions

Easy Deployment: No complex network setup; user-friendly installation

Low Power: Ideal for battery-operated devices (extended lifespan)

High Compatibility: Works with major platforms (e.g., HomeKit, Tmall Genie)

Developer-Friendly: Full SDK and documentation accelerate time-to-market

5. Market Feedback

Data from an ODM manufacturer:

25% reduction in production cost for KT6368A-based products

99.3% first-time pairing success rate

15m average range in real-world smart home environments

40% fewer customer complaints compared to previous solutions

6. Future Trends

Bluetooth Mesh for larger-scale networks

Rental-friendly smart home solutions (plug-and-play)

UWB integration for indoor positioning

Edge computing to enable local automations without cloud dependency

The KT6368A, with its balanced performance and cost, is becoming a mainstream choice for Bluetooth-enabled smart home devices, providing reliable wireless connectivity.

[blevoice]

KT1025A BT201 Audio Bluetooth Module: Debugging Record of Bluetooth Audio Chip Recording Noise Issues

Recently, we received feedback from a Hungarian customer that there was a "buzzing/humming noise" when playing back recorded audio files (copied from the TF card to a computer) using the KT1025A BT201 test board. We collaborated with the client to debug and identify the issue, and finally solved it perfectly. Here is the record of the process.

Feedback

The customer reported the issue of "buzzing sound when playing audio files on a PC".

I. Restore the Customer's Test Scenario

Test Environment

The PC is connected to the KT1025 BT201 Module via the serial port to send operation instructions.

Insert the SD card into the Module to store the audio file.

The USB interface of the PC is connected to the Module's USB for power supply.

Test Steps

Use the serial port debugging tool on the PC to send commands for starting, pausing, and stopping the recording to the Module, and record a piece of sound.

Unplug the SD card from the Module and insert it into the PC.

Play the audio files on the SD card on the PC.

Test Result

There is a buzzing sound when playing audio files on the PC.

Other Attempts

Change the power supply mode of the module to battery power, disconnect the serial communication line, and shorten the microphone input at the same time. Similarly, there is a buzzing sound when the PC plays the recorded file.

II. Investigation Process

First, I conducted the test according to the above - mentioned method and recorded a video of the test process. The result was that there was no buzzing sound when playing the recorded file on the PC.

Test Peripheral Accessories and Tools

Mic (Model: XHXDZ - 4015, 4 * 1.5mm, 1.46KΩ, 1 - 10V, 150 - 500μA)

UartAssist V5.0.10 (BR:115200)

USB TO TTL (CH340G): For power supply and serial communication

III. Further Investigation in Collaboration with the Customer

Check the Power Supply

Based on the customer's findings:

1.Powering with 4 AA batteries results in a buzzing sound. 4 AA batteries (1.5V * 4) can reach 6V, which exceeds the specified power supply range.

2. Powering with 3 AA batteries eliminates the buzzing sound. 3 AA batteries (1.5V * 3) provide 4.5V, which is within the specified power supply range.

So, the root cause has been identified - the issue lies in the chip's power supply.

Design Principles Related to the Chip's Power Supply Voltage

The chip includes a built - in LDO that outputs 3.3V via PIN12, enabling it to power peripheral circuits, though this is not typically recommended.

Thanks to the built - in LDO, the chip supports a wide power supply voltage range, from as high as 5V (or even 5.2V) down to 3.2V, and can operate at a minimum of 2.9V in extreme cases.

Allowing up to 5V ensures redundancy and stability for the chip's internal 3.3V LDO supply while accommodating compatibility with peripheral circuits that may share the same power source.

Question 20 in the document "BT201_Frequently Asked Questions_FAQ_V3_Updated to 43" in the technical resources package for the 【KT1025A Bluetooth Chip】 also provides details about the chip's power supply specifications. A screenshot is included below.

By the way, our KT1025 BT201 Module has been sold in the domestic market of China for several years, with tens of thousands of shipments. I say this to tell you that you don't need to worry about its quality and reliability.

#BluetoothAudioChip #RecordingNoise #KT1025A #DebuggingRecord

[blevoice]

JieLi's Commonly Shipped Chips in 2025: A Comprehensive Analysis

AIOT Chips - BLE Type

Common Issues

Involve the price, power consumption, main application markets of JieLi BLE chips, Channel Sounding Bluetooth channel detection technology, chip capacitance and compatibility test reports, Bluetooth MESH networking, existing transparent transmission protocols, Findmy function, Bluetooth version and BQB certification, module requirements, etc.

Mainstream Models and Features

AC631N: Discontinued.

AC635N: Suitable for smart home, Bluetooth version 6.0.

AC636N: Suitable for smart cities, supports high-speed 2M PHY, long-distance transmission and Bluetooth transparent transmission.

AC632N: Suitable for mobile phone/computer peripherals, master-slave integrated.

AW30N (Main Promotion): Suitable for voice remote controls, etc., supports multiple Bluetooth Profiles, Mesh1.1 networking.

AW31N (Main Promotion): Suitable for personal care and health, capacitive pens/page-turning pens, etc., supports secure connection, anti-loss/Findmy, multi-connection/multi-master and multi-slave, and the power consumption reaches the μA/nA level.

Personal Advice: For AIOT chips, it is recommended to focus on AC632N, which has relatively complete data and more comprehensive verification.

Smart Wearable Chip AC707N Series

Models

QFN32: Suitable for watches, electronic cigarettes, color screen bins, etc.

AC7076A3: Built-in 32Mb flash.

AC7076A6: Built-in 16Mb flash.

QFN42: Suitable for watches

AC7074A5: Built-in 64Mb flash.

AC7074A7: Built-in 128Mb flash.

AC7074A7S: Built-in 128Mb flash, 16Mb Psram.

Advantages in Smart Watches

32-bit dual-emission DSP, main frequency 288MHz + FPU.

2.5D hardware GPU, supports 480*480@90fps and above.

Dual-connection standby is about 140uA, single BLE connection standby is about 70uA, RTC shutdown is 5uA, soft shutdown is 2uA.

Supports AVI video playback.

Peripheral materials are simplified, with built-in power amplifier, LDO, powergate, etc.

Supports external SD nand/spi nand, built-in and external norflash.

Advantages in Smart Door Locks/Color Screen Electronic Cigarettes

Specification: QFN32 (4*4), built-in 4Mb/8Mb flash.

Specific Advantages: CPU main frequency 288MHz, RAM 283 + 32KB, built-in hardware 2.5D GPU, can achieve smooth screen refresh above 480*480 resolution and 90 frames per second and 3D stereo display; highly integrated, peripheral circuit is simplified, can save the MCU of the cigarette control part, built-in charging management, screen backlight and motor drive mos transistors, 0.5W power amplifier, low-power touch screen; supports low-power fast startup, can start quickly within 10ms in 10uA standby state; supports 12-bit ADC.

Personal Advice: For screen-equipped applications, the 701N series is preferred. The 707N series is a cost-reducing series.

Bluetooth Speaker Chips

Entry-Level: AC706N, AC696N, each with its own entry-level market advantages.

Mid-Low End Series: AC695N has brand entry-level advantages.

Mid-End Series: JL701N series.

High-End Series: JL703N series.

Personal Advice: At present, the AC696N series chips have the highest shipment volume for JieLi. The AC695N series chips are slightly more expensive but with sufficient performance for many products. The JL701N and JL703N series have good performance but relatively high prices, so they are used by relatively few people.

Bluetooth Headphone Chips

JL708N (High-End): 5-microphone adaptive hybrid-feed over-ear headphones (2FF + 2FB + 1 call), 9-microphone adaptive hybrid-feed over-ear headphones (6FF + 2FB + 1 call), high-end OWS headphones (advanced algorithms, AI large model applications, etc.), 2.4G low-latency gaming headphones (over-ear/TWS).

JL709N (Flagship): Semi-in-ear adaptive hybrid-feed ANC TWS (ultra-low power consumption, full-time adaptation), in-ear adaptive hybrid-feed ANC TWS (ultra-low power consumption, full-time adaptation), ultra-low power consumption sleep headphones, single-feed ANC over-ear headphones (3 analog microphones), ultra-low power consumption lavalier microphones (coming soon).

JL710N (Mainstream): Mainstream OWS headphones (high-power output, original virtual bass algorithm), mainstream single-feed + dual-microphone ENC TWS (dual-microphone beamforming ENC algorithm), entry-level hybrid-feed TWS (1FB + 1FF call sharing FF microphone), single-feed ANC over-ear headphones (2 analog microphones + 1 digital microphone), entry-level lavalier microphones (coming soon).

AC704N (Entry-Level): Entry-level TWS (OTP/1M/2Mbit Flash).

AC705N (Entry-Level): Entry-level true stereo headphones (OTP/1M/2Mbit Flash).

Iterative Relationship: During 2020 - 2025, each model shows an upward trend, such as JL700N upgraded to JL710N, AD697N upgraded to AC702N through P2P, JL701N upgraded to JL709N, etc.

Personal Advice: At present, the 709N series of Bluetooth headphones has the best sales. It is positioned in the mid-range for high-volume sales and has considerable performance.

Tags: #JieLiChips #AIOTChips #SmartWearableChips #BluetoothSpeakerChips #BluetoothHeadphoneChips

[blevoice]

Comprehensive Analysis of Jieli Chip Models and Functions: Selection Guide and Key Points

I. Overview of Jieli Chip Application Areas

Jieli chips are widely involved in 8 major areas, including headphone chips, speaker - related chips, smartwatch chips, video - related chips, health - related chips, IoT - related chips, smart toy chips, and smart mobility chips. They play a crucial role in a wide variety of electronic products, endowing different types of products with specific functions.

II. Consideration Factors for Chip Selection

(I) Product Form

Bluetooth Headphone CategoryType Sub - division: It includes TWS, OWS, neck - band sports headphones, and over - ear headphones. Different types of headphones require different chips due to their different usage scenarios and design requirements.

Bluetooth Speaker CategoryDiverse Products: There are small Bluetooth speakers, soundbar speakers, smart speakers, and the emerging Bluetooth karaoke speakers in recent years. Each type of speaker has different requirements for chip functions.

Audio Decoding CategoryProduct Characteristics and Selection: Products such as voice announcers and sound - emitting toys belong to this category. For MP3 decoding players with high - quality audio requirements, AC6082A or AD16N can be selected. For sound - emitting toys with relatively lower audio quality requirements, AD14N, AD15N, and AD17N are often used.

IoT CategoryScenario and Chip Adaptation: The application scenarios of IoT are scattered, and the products are rich. For smart home products that connect to APPs using Bluetooth, the AC632N series chips can be selected for Bluetooth BLE data transmission. For simple data transmission, the AC6328A with 8 pins is sufficient.

(II) Functional Requirements

Bluetooth Speaker CategoryFunction Refinement: Consider whether it supports functions such as AUX, U - disk, TF card, LED, digital tube, LCD screen, etc. At the same time, determine the number of chip pins according to the control and response requirements.

Bluetooth Headphone CategoryFeature Consideration: Pay attention to the headphone pairing method, operation interaction method, whether it supports noise reduction such as ENC, ANC, and single - feed or hybrid - feed. For high - end requirements, the AC700N series can be selected. The JL701N series is a headphone and speaker chip with more powerful ENC and ANC algorithms, usually used in relatively high - end headphones or smart speakers, such as in applications like ear - return, hearing - aid, noise - reduction, low - latency, and one - to - multiple connection scenarios.

(III) Performance Requirements

Sound Quality and Sound EffectsKey Parameters: It is of great importance for audio products such as Bluetooth speakers and headphones. Pay attention to Bluetooth decoding formats (SBC/AAC/LDAC/LHDC), DAC capabilities (decoding ability, SNR parameters), and the chip's noise floor. For mid - to - high - end products, supporting Hi - Res lossless decoding formats such as LDAC/LHDC can enhance the product's competitiveness.

Processing PowerIndicator Elements: It includes CPU speed and RAM size. Projects with third - party algorithms are more concerned about these. The RAM situations of different Jieli series chips vary.

Storage CapacityInternal and Extended Storage: Jieli chips often have an integrated internal Flash, which is used to store programs, prompt tones, etc. Common Flash capacities include 4Mb, 8Mb, 16Mb, 32Mb, etc. (divide by 8 to convert to bytes). If the built - in capacity is insufficient, an external Flash can be considered.

Power ConsumptionInfluencing Factors: It directly affects the product's working duration, involving startup and sleep states, as well as code operation. Power consumption data is usually not provided in the specification sheet, and an ammeter is needed for testing.

Bluetooth VersionEssential for Bluetooth Products: Determine the chip's Bluetooth version for products involving Bluetooth.

Relationship between Wafer and Performance: Chips in the same series of Jieli have the same wafer, thus the same performance. For example, in the AC695X series, AC6951C and AC6955F have the same chip frequency, RAM, and sound quality performance. When selecting, only consider whether the pin functions and performance meet the project requirements.

(IV) Cost

Relationship between Pins and Price: In the same wafer series, under the premise of meeting product functions, generally, the fewer the pins, the lower the chip price. However, this is not absolute, as models with large - volume agency sales may have a cost advantage.

(V) Supply Stability

Product LifecycleSelection Suggestion: Chips have a certain market cycle. When selecting chips, it is advisable to choose those in the prime stage of their lifecycle and that have been mass - produced to avoid problems with non - core part numbers. Since consumer electronics have a short cycle and rapid product iteration, communicate with our company in a timely manner for the latest series.

Part Number VersatilityStock Consideration: Universal part numbers have sufficient stock from the original factory because the original factory has minimum production requirements. If customers choose non - common part numbers, they must make advance stock - up plans.

(VI) Package

Impact of Package: The chip package affects space, sample production, and production convenience. For products with high - space requirements, such as TWS headphones, QFN packages can be selected to save space. However, QFN chips are less convenient for soldering samples in the engineering production process compared to SSOP packages. In mass - production SMT processes, QFN packages have higher SMT efficiency, but also require higher - end SMT machines. Jieli's commonly used packages include SOP8, SOP16, SSOP24, QFN20, QFN32, QFN40, LQFP48, and should be selected according to actual situations.

(VII) Others

Reliability and StabilityScenario Adaptation: Since the chips are mainly targeted at the consumer and IoT markets, caution should be exercised when using them in industrial or automotive - grade scenarios. Check the chip's operating temperature and humidity parameters.

Process TechnologyAdvantages of Process: The higher the chip process, the lower the performance and power consumption. The mainstream chip processes of Jieli have been upgraded to 40nm and 28nm.

#JieliChip #ChipSelection #BluetoothChip #AudioChip #IoTChip

[blevoice]

🎙️ Discover the KT148A: A Tiny Powerhouse in Voice Chips!

The amazing little thing called the KT148A voice chip, it's like a hidden gem in the world of electronics.

What's So Special About the KT148A?

Big Storage in a Small Package This China - made chip has a 32 - bit DSP design and comes in an SOP8 package. But don't be fooled by its size! Inside, it has a whopping 420KByte of storage, which can hold up to 420 seconds of voice. That's a ton of audio for all sorts of fun projects. You could use it for creating your own interactive story - telling devices, or maybe a voice - guided tour gadget for your local art gallery. And with its multi - segment voice playback, you can have different voices or messages for different parts of your project.

Speaker - Driving Wizardry The KT148A can directly drive a 0.5W speaker. This is a huge deal because it means you don't have to add a bunch of extra, complicated amplifier parts to your circuit. It simplifies everything and might even save you some cash. It's like the chip is saying, "I've got this, let me make your project's sound clear and easy!"

Updating Voices Made Easy One of the coolest things about this chip is how easy it is to update the voices. All you need is a computer serial port. No need for those expensive, fancy tools. Whether you're a developer constantly tweaking your project or someone who just wants to change message the on a DIY voice - based product, this feature is a total game - changer.

Cost - Effective Coolness And here's the cherry on top: it only costs about $0.25 per unit when you order in bulk. Sure, it's a Flash - type chip, which means it might be a bit pricier than OTP chips, but trust me, the extra cost is so worth it. The ability to rewrite and update the voice data gives you so much flexibility. You can upgrade your product, customize it for different groups, or just fix any little mistakes during the development process.

My Hands - on Experience

I decided to give it a try myself. The package came with a test board, which was super handy. After soldering the chip onto the board (yes, it was a bit of a delicate process, but so worth it), I was blown away by the clear and loud voice playback. Even in a big room, the sound was great.

Changing the voice content was also an adventure. The 8 - pin design made setting up the download environment a bit of a challenge at first, but once I got the hang of it using the manufacturer's PC - based tool, it was smooth sailing. I compressed my new audio file, imported it, and downloaded it, and voila! A new voice for my project.

So, if you're into electronics, DIY projects, or just love finding new and exciting tech, the KT148A voice chip is definitely something you should check out. Who knows what amazing things you could create with it? Let your imagination run wild! 🌈

#KT148A #VoiceChip #Electronics #DIYTech