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AC6951C8

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JieLi Tech Microcontroller Units (MCUs/MPUs/SOCs), LQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AC6951C8

JieLi Tech · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-48(7x7)

AC6951C8 from JieLi Tech, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 PB4 bidirectional GPIO with 24/8 mA drive and multiple alternate functions including ADC7, LVD input and PWM channel output.
2 VBAT power_in Main supply input, 2.2V to 5.5V.
3 VDDIO power_in IO power supply, 2.2V to 3.6V.
4 RTCVDD33 power_in RTC power supply, 2.2V to 3.6V.
5 PR1 bidirectional RTC-domain IO shared with the 32kHz oscillator output OSCO_32K, supplied by RTCVDD.
6 PR0 bidirectional RTC-domain IO shared with the 32kHz oscillator input OSCI_32K, supplied by RTCVDD.
7 PB3 bidirectional GPIO with 24/8 mA drive, also Timer2 PWM output and ADC6 input.
8 PB2 bidirectional GPIO with 8 mA drive and high-voltage resistance, can be pulled up to 5V.
9 PB1 bidirectional GPIO with 24/8 mA drive, default pull-up, also long-press reset function.
10 PB0 bidirectional GPIO with 8 mA drive and high-voltage resistance, can be pulled up to 5V.
11 BT_AVDD power_in Bluetooth analog power supply, output of the 1.3V BT_AVDD regulator as stated in PMU characteristics.
12 BT_RF passive Bluetooth RF antenna connection.
13 VSSIO power_in Ground for the IO domain.
14 BT_OSCI input Bluetooth oscillator input.
15 BT_OSCO output Bluetooth oscillator output.
16 PC5 bidirectional GPIO with 24/8 mA drive, also LCD COM0 output, touch input 15 and motor PWM channel 5 low output.
17 PC4 bidirectional GPIO with 24/8 mA drive, also LCD COM1 output, touch input 14 and motor PWM channel 5 high output.
18 PC3 bidirectional GPIO with 24/8 mA drive, also LCD COM2 output and touch input 13.
19 PC2 bidirectional GPIO with 24/8 mA drive, also LCD COM3 output, LCD SEG18 output and motor auto-stop protection pin 5.
20 PC1 bidirectional GPIO with 24/8 mA drive, also LCD COM4 output, LCD SEG17 output and motor auto-stop protection pin 4.
21 PC0 bidirectional GPIO with 24/8 mA drive, also LCD COM5 output, LCD SEG16 output and motor auto-stop protection pin 3.
22 PA12 bidirectional GPIO with 24/8 mA drive, also Timer1 PWM output, ADC4 input and LCD SEG12 output.
23 USBDM bidirectional USB 2.0 negative data line, with internal pull-down resistor.
24 USBDP bidirectional USB 2.0 positive data line, with internal pull-down resistor.
25 PA10 bidirectional GPIO with 24/8 mA drive, also SD0 clock, ADC3 input and motor PWM channel 4 low output.
26 PA9 bidirectional GPIO with 24/8 mA drive, also SD0 command, S/PDIF input A and motor PWM channel 4 high output.
27 PA8 bidirectional GPIO with 24/8 mA drive, also SD0 data 3, LCD SEG8 output and motor auto-stop protection pin 2.
28 PA7 bidirectional GPIO with 24/8 mA drive, also SD0 data 2, LCD SEG7 output and Timer0 clock input.
29 PA6 bidirectional GPIO with 24/8 mA drive, also SD0 data 1, ADC2 input and LCD SEG6 output.
30 PA5/PA4 bidirectional GPIO with 24/8 mA drive, also SD0 data 0 (PA5), ADC1 input, LCD SEG5 output and Timer0 PWM output.
31 PA3 bidirectional GPIO with 24/8 mA drive, also PLNK data 1, audio link word select A and LCD SEG3 output.
32 PA2/PA1 bidirectional GPIO with 24/8 mA drive, also PLNK serial clock (PA2) and analog channel 0 right (PA1).
33 PA0/PC7 bidirectional GPIO with 24/8 mA drive (PA0), also analog channel 0 left, LCD SEG0 output and motor PWM channel 0 high output; PC7 provides the microphone bias output.
34 MIC input Microphone input channel.
35 HPVDD power_in Headphone amplifier power supply.
36 DACVSS power_in DAC ground.
37 VCOM passive DAC reference node.
38 DACVDD power_in DAC power supply, typically 2.7V at VBAT=5V with 10mA loading.
39 DACL output DAC left channel output.
40 DACR output DAC right channel output.
41 FMIP input FM single-ended input.
42 PB11 bidirectional GPIO that also carries SDC power gate (SDPG) function.
43 PB10 bidirectional GPIO with 24/8 mA drive, also analog channel 2 right, SD0 command B, SPI2 data out A and ADC9 input.
44 PB9 bidirectional GPIO with 24/8 mA drive, also analog channel 2 left, SPI2 clock A and Timer0 capture input.
45 PB8 bidirectional GPIO with 24/8 mA drive, also analog channel 1 right, SPI2 data in A, ADC8 input and clock output 1.
46 PB7 bidirectional GPIO with 24/8 mA drive, also analog channel 1 left.
47 PB6 bidirectional GPIO with 24/8 mA drive, also SD1 clock B, SD0 data 1 B, IIC SDA C and Timer3 clock input.
48 PB5 bidirectional GPIO with 8 mA drive and high-voltage resistance, can be pulled up to 5V, also Timer3 PWM output and Timer1 capture.

Key specifications

Parameter Value
Manufacturer JieLi Tech
Package LQFP-48(7x7)
Category Single Chip Microcomputer/Microcontroller
Pins 48

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Ambient Temperature Tamb -20 70 °C 11
Storage temperature Tstg -65 150 °C 11
Supply Voltage VBAT 2.2 5.5 V 11
Charger Voltage LDO_IN 4.5 5.5 V 11
3.3V IO Input Voltage V3.3IO -0.3 V max printed as VDDIO+0.3 11
Operating temperature -20 70 °C 3
VBAT supply range VBAT 2.2 5.5 V 3
VDDIO supply range VDDIO 2.2 3.6 V 3
RTCVDD33 supply range RTCVDD33 2.2 3.6 V 3
VBAT Voltage Input VBAT 2.2 3.7 5.5 V 11
LDO_IN Charger Voltage LDO_IN 4.5 5 5.5 V 11
Loading current IL3.3 150 mA VBAT = 5V 11
Low-Level Input Voltage VIL -0.3 V VDDIO = 3.3V; max printed as 0.3* VDDIO 11
Low-Level Output Voltage VOL 0.33 V VDDIO = 3.3V 11
High-Level Output Voltage VOH 2.7 V VDDIO = 3.3V 11
Frequency Response 20 20 Hz 1KHz/0dB 10Kohm loading With A-Weighted Filter; max printed as 20K Hz 12
DAC Output Power 11 mW 32ohm loading 12
ADC Dynamic Range 80 dB 1KHz/-60dB 13
ADC S/N 90 91 dB 13
RF Transmit Power 4 6 dBm 25℃, Power Supply VBAT=5V 2441MHz 13
Input Frequency 76 108 MHz 14
Usable Sensitivity 3 4 8 dBμV EMF (S+N)/N=26dB 14
Internal pull-up/pull-down resistance accuracy -20 20 % internal pull-up/pull-down resistance accuracy ±20% 12
Internal pull-up/pull-down resistor 10 K PA0PA12, PB1, PB3, PB4, PB6PB10, PC0~PC5 port pull-up and pull-down 12

CAD (KiCad official)

  • Symbol: AC6951C8
  • Footprint: Package_QFP:LQFP-48_7x7mm_P0.5mm
  • 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
  • 3D model files: ac6951c8-etched.step / ac6951c8-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ac6951c8.step / ac6951c8.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: JieLi Tech datasheet (16 pp, sha256 1232620bcb10576c, retrieved 2026-10-28, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF