JieLi Tech AC6329C4 is Another low cost MCU but with Bluetooth 5.0 Support

JieLi Tech AC6329C4 is Another low cost MCU but with Bluetooth 5.0 Support


JieLi Technology AC6329C4 is a 35 cents MCU that also has support for Bluetooth 5.0, it also has several I/Os, ADC, PWM, and other features. The MCU is very similar to the CH32V003 MCU in terms of cost but the main difference is that the CH32V003 does not have Bluetooth support but the AC6329C4 has.

The microcontroller features a 32-bit RISC core clocked at 96 MHz with 73KB SRAM, and up to 4Mbit of flash. The MCU comes in a 16-pin SOP16 configuration and offers various interfaces like ADC, PWM, SPI, UART, encoders, and decoders, and the most interesting is that it has USB Connectivity built in.

JieLi Tech AC6329C4 Block Diagram

At the time of writing, there is not much information about this new MCU except for the datasheet. But after searching for a considerable amount of time I have Zhuhai Jieli Technology’s GitHub account with two SDKs for the AC63 series of MCUs there are many documents in the repo but what sticks out is that one for Bluetooth (with English and Chinese documentation) and another for the MCU core (Chinese only). There’s also a Chinese-language documentation website.

JieLi Tech AC6329C4 MCU Specifications

  • CPU: High-performance 32-bit RISC architecture Operating frequency@96 MHz
  • Memory:
    • 73 KB data RAM
    • 8 KB I-cache, 2-way associative
    • 1 KB Rocache, 1-way associative
  • Bluetooth:
    • Integrated Bluetooth module compliant with Bluetooth v5.3+BR+EDR+BLE specifications
    • Supports Bluetooth Piconet and Scatternet configurations
    • Class 2 and class 3 transmitting power requirements met
    • Supports GFSK and π/4 DQPSK modulation schemes
    • Wide range of Bluetooth profiles supported: A2DP, AVCTP, AVDTP, AVRCP, HFP, SPP, SMP, ATT, GAP, GATT, RFCOMM, SDP, L2CAP
    • +8 dBm transmitting power with -92 dBm sensitivity for the receiver
  • Interrupts:
    • 64 vectored interrupts
    • 8 levels of interrupt priority
  • I/O and GPIO:
    • Flexible I/O configuration
    • 10 GPIO pins, individually programmable as input or output
    • Internal pull-up/pull-down selection for each GPIO
    • CMOS/TTL level Schmitt triggered input support
  • Peripherals:
    • Full-speed USB OTG controller
    • Four 32-bit timers supporting capture and PWM modes
    • Three full-duplex advanced UARTs with DMA
    • Three SPI interfaces supporting host and device modes with DMA
    • One IIC interface supporting host and device modes
    • Real-time clock (RTC) with alarm function
    • 16-bit PWM generator for motor driving
    • Three IQ Encoder channels
    • 6-channel 10-bit ADC
    • Low Power Detector and embedded PMU for low power modes
    • Watchdog timer
  • Power Management:
    • LDOIN: 4.5V to 5.5V
    • VBAT: 1.8V to 4.5V
    • VDDIO: 1.8V to 3.4V
  • Package: SOP16
  • Temperature:
    • Operating temperature: -40°C to +85°C
    • Storage temperature: -65°C to +150°C

Jieli Tech offers AC63-based development boards, but none specifically for AC6329C4 or AC6329C2. However, a 2G GSM Bluetooth GPS tracker using AC6329C4 for Bluetooth exists. The MCU is cheap and really available but like all other newly introduced developments will be difficult due to lack of documentation, examples code, and most importantly documentation in Chinese, until and unless we get some proper documentation in English the difficulty will be present. but that is not an issue for those who read and speak Chinese.

The IC can be found on LCSC where a single unit will cost you only $0.35 and for a pack of 500 the price goes down to $0.25 that’s crazy for an MCU with this might. The company also provides a development board which will cost you around $7.62 and is available on Aliexpress only.

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About Debashis Das

Tech Content Creator | Hardware Design Engineer | IoT Enthusiast | Digital Storyteller | Video Creator | From crafting digital dialogues at Semicon Media to orchestrating online engagement at Electronics-lab.com, my journey is about making tech talk interesting and accessible. In the quiet corners of the day, I advocate for easier tech education, one tutorial at a time. Let's connect and keep the digital dialogue going!

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that AC6329C(4) datasheet is from March 2021 (it’s July 2024 as of this writing), so it isn’t brand new anymore.

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