AC78022MBQA from AutoChips, in a HVQFN-32(5x5). 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	Port B bit 0 GPIO (GPIO index 16), alternate functions ADC_IN18, PWM1_CH1 and PWM2_FLT1 selected via PMUX1[20:18]; pins default to GPIO after first power-up.
2	PB1	bidirectional	Port B bit 1 GPIO (GPIO index 17), alternate functions PWM1_CH0 and DAC_OUT selected via PMUX1[23:21].
3	VDD1	power_in	Positive supply pin; operating voltage range 2.7 V to 5.5 V and absolute maximum VDD of -0.3 V to 6 V, and VDD1 and VDD2 must be connected to the same supply on the board.
4	VSS1	power_in	Ground (VSS) supply pin, to be decoupled close to the device together with VDD1.
5	PA12	bidirectional	Port A bit 12 GPIO (GPIO index 12), alternate functions I2C0_SCL, OSC_OUT (default function) and PWM0_FLT0 selected via PMUX1[8:6].
6	PA15	bidirectional	Port A bit 15 GPIO (GPIO index 15), alternate functions I2C0_SDA, OSC_IN (default function) and PWDT0_IN0 selected via PMUX1[17:15].
7	PA0	bidirectional	Port A bit 0 GPIO (GPIO index 0), alternate functions PWM2_CH3, VREF-/ADC_IN10 and I2C0_SCL selected via PMUX0[2:0].
8	PA1	bidirectional	Port A bit 1 GPIO (GPIO index 1), alternate functions PWM2_CH2, VREF+/ADC_IN9 and I2C0_SDA selected via PMUX0[5:3].
9	PB3	bidirectional	Port B bit 3 GPIO (GPIO index 19), alternate functions PWM2_CH0, ADC_IN13 and SPI0_MOSI selected via PMUX1[29:27].
10	PA2	bidirectional	Port A bit 2 GPIO (GPIO index 2), alternate functions PWM2_CH1, ADC_IN8 and SPI0_MISO selected via PMUX0[8:6].
11	PA3	bidirectional	Port A bit 3 GPIO (GPIO index 3), alternate functions PWM2_CH0, ADC_IN7 and SPI0_SCK selected via PMUX0[11:9].
12	PA4	bidirectional	Port A bit 4 GPIO (GPIO index 4), alternate functions PWM0_CH1, ADC_IN6/ACMP_IN6 and UART1_TX selected via PMUX0[14:12].
13	PA5	bidirectional	Port A bit 5 GPIO (GPIO index 5), alternate functions PWM0_CH0, ADC_IN5/ACMP_IN5 and UART1_RX selected via PMUX0[17:15].
14	PA6	bidirectional	Port A bit 6 GPIO (GPIO index 6), with BOOT listed as Function 1 (default function) and SPI0_NSS selected via PMUX0[20:18].
15	PB4	bidirectional	Port B bit 4 GPIO (GPIO index 20), alternate functions PWM2_CH1, ADC_IN12 and SPI0_MISO selected via PMUX2[2:0].
16	PB5	bidirectional	Port B bit 5 GPIO (GPIO index 21), alternate functions PWM0_CH0, ADC_IN11 and SPI0_SCK selected via PMUX2[5:3].
17	PA7	bidirectional	Port A bit 7 GPIO (GPIO index 7), alternate functions UART0_TX, ADC_IN4/ACMP_IN4 and SPI0_MOSI selected via PMUX0[23:21].
18	PA8	bidirectional	Port A bit 8 GPIO (GPIO index 8), alternate functions UART0_RX, ADC_IN3/ACMP_IN3 and SPI0_NSS selected via PMUX0[26:24].
19	PA9	bidirectional	Port A bit 9 GPIO (GPIO index 9), alternate functions PWM2_FLT0, ADC_IN2/ACMP_IN2 and RTC_CLKIN selected via PMUX0[29:27].
20	VSS2	power_in	Ground (VSS) supply pin, paired with VSS1 for the device ground.
21	VDD2	power_in	Positive supply pin; operating voltage range 2.7 V to 5.5 V and absolute maximum VDD of -0.3 V to 6 V, and must be connected to the same supply as VDD1.
22	PB6	bidirectional	Port B bit 6 GPIO (GPIO index 22), alternate functions ADC_IN16, PWM1_FLT0 and PWM0_FLT1 selected via PMUX2[8:6].
23	PB7	bidirectional	Port B bit 7 GPIO (GPIO index 23), alternate functions ADC_IN15, ACMP_IN7 and I2C0_SCL selected via PMUX2[11:9].
24	PB8	bidirectional	Port B bit 8 GPIO (GPIO index 24), alternate functions ADC_IN14, PWDT0_IN2 and I2C0_SDA selected via PMUX2[14:12].
25	PA10	bidirectional	Port A bit 10 GPIO (GPIO index 10), alternate functions PWM1_CH1, ADC_IN1/ACMP_IN1 and PWDT0_IN2 selected via PMUX1[2:0].
26	PA11	bidirectional	Port A bit 11 GPIO (GPIO index 11), alternate functions PWM1_CH0, ADC_IN0/ACMP_IN0 and PWDT0_IN1 selected via PMUX1[5:3].
27	PB9	bidirectional	Port B bit 9 GPIO (GPIO index 25), alternate functions PWM2_CH3, I2C0_SCL and UART0_TX selected via PMUX2[17:15].
28	PB10	bidirectional	Port B bit 10 GPIO (GPIO index 26), alternate functions PWM2_CH2, I2C0_SDA and UART0_RX selected via PMUX2[20:18].
29	PB2	bidirectional	Port B bit 2 GPIO (GPIO index 18), alternate functions NMI_B, PWM1_FLT1 and PWDT0_IN0 selected via PMUX1[26:24].
30	PA13	bidirectional	Port A bit 13 GPIO (GPIO index 13), with SWD_CLK as the default function, plus EXT_CLKIN and RTC_CLKOUT selected via PMUX1[11:9].
31	RESET_B	input	Dedicated active-low reset input RESET_B; the datasheet specifies a minimum external reset pulse width of 1.5 × t32k for it to be recognised.
32	PA14	bidirectional	Port A bit 14 GPIO (GPIO index 14), with SWD_DIO as the default function, plus ACMP_OUT and PWM0_CH1 selected via PMUX1[14:12].
33	EP	passive	Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter	Value
Manufacturer	AutoChips
Package	HVQFN-32(5x5)
Category	Single Chip Microcomputer/Microcontroller
Pins	33

Electrical characteristics

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

Parameter	Symbol	Min	Typ	Max	Unit	Conditions	Page
External supply voltage (absolute max)	VDD	-0.3		6	V		14
Maximum current flowing into VDD	IDD			60	mA		14
Input voltage, non-open-drain pins	VIN	-0.3			V		14
Input voltage, open-drain pins	VIN	-0.3			V		14
Single-pin transient current limit, all port pins	ID	-20		20	mA		14
Storage temperature	TSTG	-55		150	°C		13
Soldering temperature, lead-free	TSDR			260	°C		13
Operating voltage		2.7		5.5	V		16
Ambient temperature range		-40		125	°C		8
System and core clock frequency	fSys			32	MHz		20
Bus frequency	fBus			16	MHz		20
Total max output high current, all ports	IOHT			30	mA	VDD 5 V	16
Total max output high current, all ports	IOHT			20	mA	VDD 3 V	16
Output low voltage, 5 V drive	VOL			0.8	V	5 V, Iload = 5, 10, 15, 20 mA	16
Output low voltage, 3 V drive	VOL			0.8	V	3 V, Iload = 3.6, 7.2, 10.8, 14.4 mA	16
Total max output low current, all ports	IOLT			30	mA	VDD 5 V	16
Total max output low current, all ports	IOLT			20	mA	VDD 3 V	16
Input leakage current per pin	IIn	-1	0.1	1	µA	VIN = VDD or VSS (high-impedance input)	16
DC injection current, single pin	IIC	-2		2	mA	VIN < VSS or VIN > VDD	17
DC injection current, total MCU limit	IIC	-5		20	mA	sum of all stressed pins	17
POR reset voltage	VPOR	1.6	1.8	2	V		17
Falling-edge LVD threshold, low range	VLVRL	2.5	2.6	2.7	V	LVDV = 0	17
Falling-edge LVD threshold, high range	VLVRH	4.2	4.3	4.4	V	LVDV = 1	17
Falling-edge LVD warning threshold, low range	VLVDL	2.8	2.9	3	V		17
Falling-edge LVD warning threshold, high range	VLVDH	4.5	4.6	4.7	V		17
Buffered bandgap output	VBG	1.18	1.2	1.22	V	factory-trimmed at VDD = 5.0 V, 25 °C	17
SWD_CLK operating frequency	J1	0		20	MHz	full voltage range 2.7-5.5 V	24
SWD_CLK clock pulse width	J3	20			ns	serial wire debug	24
SWD_CLK high to SWD_DIO data valid	J11			42	ns		24
External oscillator frequency	fhi	8		20	MHz		24
LFOSC output frequency range	flfosc	31.52	32	32.48	MHz	-40 to 125 °C	25
LPOSC factory-trimmed accuracy	Δfint_ft	-2		2	%	T = 25 °C, VDD = 5 V	25
LPOSC accuracy over temperature	Δfint_t	-10		10	%	-40 to 125 °C, VDD 2.7-5.5 V, trimmed at 25 °C	25
Flash program/erase voltage	Vprog/erase	2.7		5.5	V	-40 to 125 °C	25
Flash bus frequency	fSYS	8	32	32	MHz		26
Flash endurance (erase-program cycles)	nEDR	10			k次	TA = -40 to 125 °C	26
Data retention	tRET	100			年	25 °C	26
Data retention	tRET	20			年	105 °C	26
Data retention	tRET	10			年	125 °C	26
ADC clock frequency	fADC			16	MHz		26
ADC sampling frequency	ftrig			0.25	MHz	fADC = 8 MHz	27
ADC integral nonlinearity	INL			1.5	LSB		27
ADC differential nonlinearity	DNL			1.5	LSB		27
ACMP supply voltage	VAVDD	2.5		5.5	V		28
ACMP operating supply current	IDDA			20	µA	ACMP only	28
ACMP analog input offset voltage	VAIO	-30		30	mV		28
SPI master data input setup time	tsi	10			ns		29
SPI master data input hold time	thi	25			ns		29
SPI slave operating frequency	fop			8	MHz	polling receive mode	30
Thermal resistance, junction to ambient	RθJA		37.36		°C/W	single-layer 1S board, natural convection	21
Thermal resistance, junction to ambient	RθJA		17.59		°C/W	four-layer 2s2p board, natural convection	21
Thermal resistance, junction to ambient, 200 ft/min airflow	RθJMA		31.11		°C/W	single-layer 1S board	21
Thermal resistance, junction to ambient, 200 ft/min airflow	RθJMA		13.72		°C/W	four-layer 2s2p board	21
Thermal resistance, junction to board	RθJB		7.9		°C/W	single-layer 1S board	22
Thermal resistance, junction to board	RθJB		5.19		°C/W	four-layer 2s2p board	22
Thermal resistance, junction to case	RθJC		27.08		°C/W	same for both board types	22
Thermal characterization parameter, junction to package top	ΨJT		0.5		°C/W	single-layer 1S board, natural convection	22
Thermal characterization parameter, junction to package top	ΨJT		0.35		°C/W	four-layer 2s2p board, natural convection	22
Thermal characterization parameter, junction to package bottom	ΨJB		7.75		°C/W	single-layer 1S board, natural convection	22
Thermal characterization parameter, junction to package bottom	ΨJB		5.17		°C/W	four-layer 2s2p board, natural convection	22

CAD (KiCad official)

Symbol: AC78022MBQA
Footprint: Package_DFN_QFN:HVQFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm
3D model: HVQFN-32(5x5) (KiCad packages3D, STEP)
3D model files: ac78022mbqa-etched.step / ac78022mbqa-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ac78022mbqa.step / ac78022mbqa.glb are the bare package body.

Provenance

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

Datasheet: AutoChips datasheet (40 pp, sha256 e3e5ec1b79a92875, retrieved 2026-11-05, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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

AC78022MBQA

Verified AC78022MBQA

Verification log 1 record

3D Model

Symbol & Footprint

Schematic Symbol

PCB Footprint

Datasheet

README