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AD142A4

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JieLi Tech Microcontroller Units (MCUs/MPUs/SOCs), SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AD142A4

JieLi Tech · Microcontroller Units (MCUs/MPUs/SOCs) · SOP-16

AD142A4 from JieLi Tech, in a SOP-16. 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 PA6 bidirectional General-purpose I/O (drive 8 mA / 64 mA) with alternate functions SPI1 data in (C) and SD0 data (D).
2 PA5 bidirectional General-purpose I/O (drive 8 mA / 64 mA) with alternate functions ADC input channel 7, SPI0/SPI1 data, SD0 command, UART0 RX, I2C_SDA and PWM channel 1 output.
3 PA4 bidirectional General-purpose I/O (drive 8 mA / 64 mA) with alternate functions ADC input channel 6, SPI0 data 2, SPI1 clock (C), SD0 clock, UART0 TX, I2C_SCL, Timer2 clock in and PWM channel 0 output.
4 USBDM bidirectional USB negative data line (drive 10 mA, internal pull-down 15K), which can also be configured as a normal I/O pin; also ADC input channel 5.
5 USBDP bidirectional USB positive data line (drive 10 mA, internal pull-down 15K), which can also be configured as a normal I/O pin; also ADC input channel 4.
6 PA0/PA13 bidirectional Shared pad: PA0 is a GPIO with default internal pull-up (10K) and long-press reset function, and PA13 is a GPIO (drive 8 mA / 64 mA) with ADC channel 10, AUX0, MIC_BIAS output and Timer0 capture alternates.
7 PB1 bidirectional General-purpose I/O (drive 8 mA / 64 mA) that also serves as the MIC input channel.
8 AGND power_in Analog ground.
9 PB0 bidirectional General-purpose I/O (drive 8 mA / 64 mA) that also serves as the analog DAC audio output, ADC channel 13 input and low voltage detect input.
10 VDDIO power_in GPIO power supply; VDDIO is specified at 2.0 V to 3.4 V (3.0 V typical) by the PMU output.
11 VBAT power_in Battery power supply input, specified at 2.0 V to 5.5 V (3.7 V typical).
12 GND power_in Digital ground.
13 DACPO output Class-D amplifier positive output, part of the 0.5 W Class-D audio amplifier output.
14 DACNO output Class-D amplifier negative output, part of the 0.5 W Class-D audio amplifier output.
15 PA12 bidirectional General-purpose I/O (drive 8 mA / 64 mA) with alternate functions SPI1 data out (B) and Motor Timer3 capture.
16 PA9/PA11 bidirectional Shared pad: PA11 is a GPIO (drive 8 mA / 64 mA) with ADC channel 9, SPI1 clock (B) and Motor Timer2 capture alternates, and PA9 is a high-voltage-resistant GPIO (drive 8 mA, internal pull-up 10K, pull-down 60K) with UART1 TX/RX (B), I2C_SDA (D), Timer1 capture and PWM channel 3 output.

Key specifications

Parameter Value
Manufacturer JieLi Tech
Package SOP-16
Category Single Chip Microcomputer/Microcontroller
Pins 16

CAD (KiCad official)

  • Symbol: AD142A4
  • Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
  • 3D model: SOP-16 (KiCad packages3D, STEP)
  • 3D model files: ad142a4-etched.step / ad142a4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad142a4.step / ad142a4.glb are the bare package body.

Provenance

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

  • Datasheet: JieLi Tech datasheet (9 pp, sha256 f1fdbfee4d1d3a1f, retrieved 2026-10-27, 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