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AC1042A2
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JieLi Tech Microcontrollers (MCU/MPU/SOC), SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AC1042A2
JieLi Tech · Microcontrollers (MCU/MPU/SOC) · SOP-16
AC1042A2 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 | PB0 | bidirectional | General-purpose I/O with 8 mA normal and 64 mA high drive, also usable as the DAC analog audio output, ADC channel 13, or the low-voltage detect input. |
| 2 | VSSIO | power_in | Digital ground for the I/O domain. |
| 3 | VDDIO | power_out | GPIO power rail whose PMU output is specified at 2.0 V min, 3.0 V typ, 3.4 V max with up to 100 mA loading. |
| 4 | VBAT | power_in | Battery power supply input specified from 2.0 V min to 5.5 V max (3.7 V typ). |
| 5 | PA2/PA12 | bidirectional | Shared GPIO pin (8 mA normal / 64 mA high drive) that multiplexes PA2 (ADC2, SPI0DOB, SD0CMDA, I2C_SDA(B), PWM2H) and PA12 (I2S_LRCK, SPI1DOB, SD0CMDB, MCAP3). |
| 6 | PA11 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) also usable as ADC9, I2S_SCLK, SPI1CLKB, SD0CLKB, or MCAP2. |
| 7 | PA10 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) also usable as ADC8, I2S_DAT3, SPI1DIB, SD0DATB, TMR1 clock input, or MCAP1. |
| 8 | PA9 | bidirectional | High-voltage-resistant GPIO rated 8 mA that also provides I2S_DAT2, UART1TXB/RXB, I2C_SDA(D), CAP1, or PWM3. |
| 9 | USBDM | bidirectional | USB full-speed negative data line with internal pull-down, rated 10 mA, which can also be configured as a normal I/O pin and used as ADC5, SPI1DOA, SD0DATC, UART1TXA, or I2C_SDA(A). |
| 10 | USBDP | bidirectional | USB full-speed positive data line with internal pull-down, rated 10 mA, which can also be configured as a normal I/O pin and used as ADC4, SPI1CLKA, UART1RXA, or I2C_SCL(A). |
| 11 | PA0 | bidirectional | GPIO (8 mA / 64 mA high drive) with default pull-up, also providing the long-press reset function, ADC0, and UART0TXB. |
| 12 | PA15/PA14 | bidirectional | Shared GPIO pin (8 mA / 64 mA high drive) that multiplexes PA15 (ADC12, MIC_LDO microphone power output) and PA14 (ADC11, AUX1 analog channel 1 input). |
| 13 | PA13 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) also usable as ADC10, AUX0 analog input, MIC_BIAS microphone bias output, or CAP0 timer capture. |
| 14 | PB1 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) that also serves as the MIC input channel. |
| 15 | AGND | power_in | Analog ground. |
| 16 | VCOM | passive | Analog reference pin; the datasheet gives no voltage or loading limits for it. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JieLi Tech |
| Package | SOP-16 |
| Category | Embedded Processors & Controllers |
| Pins | 16 |
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 | -40 | 85 | °C | 6 | ||
| Storage temperature | Tstg | -65 | 150 | °C | 6 | ||
| Supply Voltage | VBAT | -0.3 | 5.5 | V | 6 | ||
| 3.3V IO Input Voltage | VVDDIO33 | -0.3 | 3.6 | V | 6 | ||
| Working voltage VBAT | VBAT | 2 | 5.5 | V | 2 | ||
| Working voltage HPVDD | HPVDD | 2 | 5.5 | V | 2 | ||
| Working voltage VDDIO | VDDIO | 2 | 3.4 | V | 2 | ||
| Operating Temperature | -40 | 85 | °C | 2 | |||
| VBAT Voltage Input | VBAT | 2 | 3.7 | 5.5 | V | 6 | |
| VVDDIO Voltage output | VVDDIO | 2 | 3 | 3.4 | V | VBAT = 3.7V, 100mA loading | 6 |
| IVDDIO Loading current | IVDDIO | 100 | mA | VBAT=3.7V | 6 | ||
| Low-Level Output Voltage | VOL | 0.33 | V | VDDIO = 3.3V | 6 | ||
| High-Level Output Voltage | VOH | 2.7 | V | VDDIO = 3.3V | 6 | ||
| Frequency Response | 20 | 16 | Hz | 1KHz/0dB, 100kohm loading, with A-Weighted Filter | 7 | ||
| Internal pull-up/pull-down resistance accuracy | -20 | 20 | % | 7 |
CAD (KiCad official)
- Symbol:
AC1042A2 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
ac1042a2-etched.step/ac1042a2-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ac1042a2.step/ac1042a2.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JieLi Tech datasheet (9 pp, sha256
ec76044fefdda2ae, retrieved 2026-10-20, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# AC1042A2
**JieLi Tech** · Microcontrollers (MCU/MPU/SOC) · SOP-16
AC1042A2 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 | PB0 | bidirectional | General-purpose I/O with 8 mA normal and 64 mA high drive, also usable as the DAC analog audio output, ADC channel 13, or the low-voltage detect input. |
| 2 | VSSIO | power_in | Digital ground for the I/O domain. |
| 3 | VDDIO | power_out | GPIO power rail whose PMU output is specified at 2.0 V min, 3.0 V typ, 3.4 V max with up to 100 mA loading. |
| 4 | VBAT | power_in | Battery power supply input specified from 2.0 V min to 5.5 V max (3.7 V typ). |
| 5 | PA2/PA12 | bidirectional | Shared GPIO pin (8 mA normal / 64 mA high drive) that multiplexes PA2 (ADC2, SPI0DOB, SD0CMDA, I2C_SDA(B), PWM2H) and PA12 (I2S_LRCK, SPI1DOB, SD0CMDB, MCAP3). |
| 6 | PA11 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) also usable as ADC9, I2S_SCLK, SPI1CLKB, SD0CLKB, or MCAP2. |
| 7 | PA10 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) also usable as ADC8, I2S_DAT3, SPI1DIB, SD0DATB, TMR1 clock input, or MCAP1. |
| 8 | PA9 | bidirectional | High-voltage-resistant GPIO rated 8 mA that also provides I2S_DAT2, UART1TXB/RXB, I2C_SDA(D), CAP1, or PWM3. |
| 9 | USBDM | bidirectional | USB full-speed negative data line with internal pull-down, rated 10 mA, which can also be configured as a normal I/O pin and used as ADC5, SPI1DOA, SD0DATC, UART1TXA, or I2C_SDA(A). |
| 10 | USBDP | bidirectional | USB full-speed positive data line with internal pull-down, rated 10 mA, which can also be configured as a normal I/O pin and used as ADC4, SPI1CLKA, UART1RXA, or I2C_SCL(A). |
| 11 | PA0 | bidirectional | GPIO (8 mA / 64 mA high drive) with default pull-up, also providing the long-press reset function, ADC0, and UART0TXB. |
| 12 | PA15/PA14 | bidirectional | Shared GPIO pin (8 mA / 64 mA high drive) that multiplexes PA15 (ADC12, MIC_LDO microphone power output) and PA14 (ADC11, AUX1 analog channel 1 input). |
| 13 | PA13 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) also usable as ADC10, AUX0 analog input, MIC_BIAS microphone bias output, or CAP0 timer capture. |
| 14 | PB1 | bidirectional | General-purpose I/O (8 mA / 64 mA high drive) that also serves as the MIC input channel. |
| 15 | AGND | power_in | Analog ground. |
| 16 | VCOM | passive | Analog reference pin; the datasheet gives no voltage or loading limits for it. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JieLi Tech |
| Package | SOP-16 |
| Category | Embedded Processors & Controllers |
| Pins | 16 |
## 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 | -40 | | 85 | °C | | 6 |
| Storage temperature | Tstg | -65 | | 150 | °C | | 6 |
| Supply Voltage | VBAT | -0.3 | | 5.5 | V | | 6 |
| 3.3V IO Input Voltage | VVDDIO33 | -0.3 | | 3.6 | V | | 6 |
| Working voltage VBAT | VBAT | 2 | | 5.5 | V | | 2 |
| Working voltage HPVDD | HPVDD | 2 | | 5.5 | V | | 2 |
| Working voltage VDDIO | VDDIO | 2 | | 3.4 | V | | 2 |
| Operating Temperature | | -40 | | 85 | °C | | 2 |
| VBAT Voltage Input | VBAT | 2 | 3.7 | 5.5 | V | | 6 |
| VVDDIO Voltage output | VVDDIO | 2 | 3 | 3.4 | V | VBAT = 3.7V, 100mA loading | 6 |
| IVDDIO Loading current | IVDDIO | | | 100 | mA | VBAT=3.7V | 6 |
| Low-Level Output Voltage | VOL | | | 0.33 | V | VDDIO = 3.3V | 6 |
| High-Level Output Voltage | VOH | 2.7 | | | V | VDDIO = 3.3V | 6 |
| Frequency Response | | 20 | | 16 | Hz | 1KHz/0dB, 100kohm loading, with A-Weighted Filter | 7 |
| Internal pull-up/pull-down resistance accuracy | | -20 | | 20 | % | | 7 |
## CAD (KiCad official)
- Symbol: `AC1042A2`
- Footprint: `Package_SO:SOIC-16_3.9x9.9mm_P1.27mm`
- 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files: `ac1042a2-etched.step` / `ac1042a2-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ac1042a2.step` / `ac1042a2.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [JieLi Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603346775176454144) (9 pp, sha256 `ec76044fefdda2ae`, retrieved 2026-10-20, 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](docs/ac1042a2-datasheet.pdf)