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AC7811QBFE

Public Made by Adom

by adom

AutoChips Microcontroller Units (MCUs/MPUs/SOCs), LQFP-64(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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AC7811QBFE

AutoChips · Microcontroller Units (MCUs/MPUs/SOCs) · LQFP-64(7x7)

AC7811QBFE from AutoChips, in a LQFP-64(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 PA0 bidirectional GPIO0 port A bit 0; alternate functions SPI1_NSS, TRACED3, FLASH_NSS (PMUX0[2:0]).
2 PA1 bidirectional GPIO1 port A bit 1; alternate functions SPI1_SCK, TRACECLK, FLASH_SCK (PMUX0[5:3]).
3 PA2 bidirectional GPIO2 port A bit 2; alternate functions SPI1_MISO, TRACED0, FLASH_DQ1 (PMUX0[8:6]).
4 PA3 bidirectional GPIO3 port A bit 3; alternate functions SPI1_MOSI, TRACED1, FLASH_DQ0 (PMUX0[11:9]).
5 PA4 bidirectional GPIO4 port A bit 4; alternate functions UART4_TX, CAN1_RX, FLASH_DQ3 (PMUX0[14:12]).
6 PA5 bidirectional GPIO5 port A bit 5; alternate functions UART4_RX, CAN1_TX, FLASH_DQ2 (PMUX0[17:15]).
7 OSC_OUT output Crystal oscillator output (default function) for the 4 MHz to 30 MHz external oscillator.
8 OSC_IN input Crystal oscillator input (default function) for the 4 MHz to 30 MHz external oscillator.
9 AVSS power_in Analog ground; decouple with 0.1 uF X7R capacitor placed close to the pin.
10 AVDD power_in Analog supply, 2.7 V to 5.5 V; must be connected to the same supply as DVDD on the board.
11 AVDD power_in Analog supply, 2.7 V to 5.5 V; must be connected to the same supply as DVDD on the board.
12 AVSS power_in Analog ground; decouple with 0.1 uF X7R capacitor placed close to the pin.
13 PA6 bidirectional GPIO6 port A bit 6; alternate functions ADC_IN10, UART1_CTS, UART4_TX (PMUX0[20:18]).
14 PA7 bidirectional GPIO7 port A bit 7; alternate functions ADC_IN0, UART1_TX, UART5_TX (PMUX0[23:21]).
15 PA8 bidirectional GPIO8 port A bit 8; alternate functions ADC_IN1, UART1_RX, UART5_RX (PMUX0[26:24]).
16 PA9 bidirectional GPIO9 port A bit 9; alternate functions ADC_IN2, SPI2_NSS, HWLIN_TX (PMUX0[29:27]).
17 PA10 bidirectional GPIO10 port A bit 10; alternate functions ADC_IN3, SPI2_SCK, HWLIN_RX (PMUX1[2:0]).
18 PA11 bidirectional GPIO11 port A bit 11; alternate functions ADC_IN4, SPI2_MISO, UART3_RX (PMUX1[5:3]).
19 PA12 bidirectional GPIO12 port A bit 12; alternate functions ADC_IN5, SPI2_MOSI, UART3_TX (PMUX1[8:6]).
20 PA13 bidirectional GPIO13 port A bit 13; alternate functions ADC_IN6, I2C1_SCL, UART6_RX (PMUX1[11:9]).
21 PA14 bidirectional GPIO14 port A bit 14; alternate functions ADC_IN7, I2C1_SDA, UART6_TX (PMUX1[14:12]).
22 PA15 bidirectional GPIO15 port A bit 15; alternate functions ADC_IN8, UART2_RTS (PMUX1[17:15]).
23 PB0 bidirectional GPIO16 port B bit 0; alternate functions ADC_IN9, UART2_TX, CAN2_STDBY (PMUX1[20:18]).
24 PB1 bidirectional GPIO17 port B bit 1; alternate functions ADC_IN11, UART2_RX (PMUX1[23:21]).
25 PB2 bidirectional GPIO18 port B bit 2; alternate functions NMI_B, UART3_TX, CAN1_STDBY (PMUX1[26:24]).
26 NRST input External reset input (default function); pulse of at least 1.5 x t32k is recognized as reset.
27 PB3 bidirectional GPIO19 port B bit 3; alternate functions PWDT_IN1, UART3_RX (PMUX1[29:27]).
28 PB4 bidirectional GPIO20 port B bit 4; alternate functions PWDT_IN2, TRACED2 (PMUX2[2:0]).
29 PB5 bidirectional GPIO21 port B bit 5; alternate functions UART1_TX, PWDT_IN1 (PMUX2[5:3]).
30 PB6 bidirectional GPIO22 port B bit 6; alternate functions UART1_RX, PWDT_IN2, PWM3_CH0 (PMUX2[8:6]).
31 PB7 bidirectional GPIO23 port B bit 7; alternate functions UART1_RTS, PWM_FAULT1 (PMUX2[11:9]).
32 PB8 bidirectional GPIO24 port B bit 8; alternate functions PWDT_IN0, I2C2_SDA (PMUX2[14:12]).
33 PB9 bidirectional GPIO25 port B bit 9; alternate functions PWM0_CH0, PWM2_CH0, CAN1_RX (PMUX2[17:15]).
34 DVSS power_in Digital ground; decouple with 0.1 uF X7R capacitor placed close to the pin.
35 DVDD power_in Digital supply, 2.7 V to 5.5 V; must be connected to the same supply as AVDD on the board.
36 VPP passive VPP pin; the datasheet gives no function description beyond its name.
37 PB10 bidirectional GPIO26 port B bit 10; alternate functions PWM0_CH1, PWM2_CH1, CAN1_TX (PMUX2[20:18]).
38 PB11 bidirectional GPIO27 port B bit 11; alternate functions SPI2_NSS, PWM2_CH2 (PMUX2[23:21]).
39 PB12 bidirectional GPIO28 port B bit 12; alternate functions SPI2_SCK, PWM2_CH3 (PMUX2[26:24]).
40 PB13 bidirectional GPIO29 port B bit 13; alternate functions SPI2_MISO, PWM2_CH4, UART5_TX (PMUX2[29:27]).
41 PB14 bidirectional GPIO30 port B bit 14; alternate functions SPI2_MOSI, PWM2_CH5, UART5_RX (PMUX3[2:0]).
42 PB15 bidirectional GPIO31 port B bit 15; alternate functions PWM2_CH0, PWM0_EXT (PMUX3[5:3]).
43 PC0 bidirectional GPIO32 port C bit 0; alternate functions PWM2_CH1, PWM1_EXT (PMUX3[8:6]).
44 PC1 bidirectional GPIO33 port C bit 1; alternate functions PWM2_CH2, UART5_RTS (PMUX3[11:9]).
45 PC2 bidirectional GPIO34 port C bit 2; alternate functions PWM2_CH3, UART6_RTS (PMUX3[14:12]).
46 PC3 bidirectional GPIO35 port C bit 3; alternate functions UARTTX_SFLASH, PWM2_CH4, PWM2_CH0 (PMUX3[17:15]).
47 PC4 bidirectional GPIO36 port C bit 4; alternate functions UARTRX_SFLASH, PWM2_CH5, PWM2_CH1 (PMUX3[20:18]).
48 PC5 bidirectional GPIO37 port C bit 5; alternate functions I2C2_SCL, UART1_CTS (PMUX3[23:21]).
49 PC6 bidirectional GPIO38 port C bit 6; alternate functions I2C2_SDA, UART1_CTS (PMUX3[26:24]).
50 PC7 bidirectional GPIO39 port C bit 7; default function JTCK_SWCLK, alternate UART3_RTS (PMUX3[29:27]).
51 PC8 bidirectional GPIO40 port C bit 8; default function JTDO_TRACESWO, alternate UART2_RTS (PMUX4[2:0]).
52 PC9 bidirectional GPIO41 port C bit 9; default function JTMS_SWDIO, alternates UART4_RTS, PWM_FAULT1 (PMUX4[5:3]).
53 PC10 bidirectional GPIO42 port C bit 10; alternate functions CAN2_TX, UART6_TX, PWM_FAULT2 (PMUX4[8:6]).
54 PC11 bidirectional GPIO43 port C bit 11; alternate functions CAN2_RX, UART6_RX, PWDT_IN0 (PMUX4[11:9]).
55 BOOT input BOOT pin (PE3), default function BOOT.
56 PC12 bidirectional GPIO44 port C bit 12; alternate functions I2C1_SCL, UART5_TX (PMUX4[14:12]).
57 PC13 bidirectional GPIO45 port C bit 13; alternate functions I2C1_SDA, UART5_RX (PMUX4[17:15]).
58 DVSS power_in Digital ground; decouple with 0.1 uF X7R capacitor placed close to the pin.
59 DVDD power_in Digital supply, 2.7 V to 5.5 V; must be connected to the same supply as AVDD on the board.
60 PC14 bidirectional GPIO46 port C bit 14; alternate functions CAN1_RX, UART4_RX, PWDT_IN3 (PMUX4[20:18]).
61 PC15 bidirectional GPIO47 port C bit 15; alternate functions CAN1_TX, UART4_TX, TAMPER_RTC (PMUX4[23:21]).
62 PD0 bidirectional GPIO48 port D bit 0; alternate functions UART1_CTS, PWM_FAULT2 (PMUX4[26:24]).
63 PD1 bidirectional GPIO49 port D bit 1; alternate functions UART2_TX, PWM0_CH0, I2C2_SCL (PMUX4[29:27]).
64 PD2 bidirectional GPIO50 port D bit 2; alternate functions UART2_RX, PWM0_CH1, I2C2_SDA (PMUX5[2:0]).

Key specifications

Parameter Value
Manufacturer AutoChips
Package LQFP-64(7x7)
Category Single Chip Microcomputer/Microcontroller
Pins 64

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Digital supply voltage VDD -0.3 6 V 9
Max current into VDD IDD 60 mA 9
Input voltage (non open-drain) VIN -0.3 0 V VDD + 0.3 9
Max transient current per pin ID -20 20 mA all port pins 9
Analog supply voltage VDDA -0.3 0.3 V VDD, 0.3 to VDD + 0.3 (relative to VDD) 9
Storage temperature TSTG -55 150 °C 8
Soldering temperature, lead-free TSDR 260 °C 8
ESD HBM VHBM -8000 8000 V AEC-Q100-002 8
ESD CDM VCDM -750 750 V AEC-Q100-011 8
Latch-up current ILAT -200 200 mA 125°C ambient 8
Operating voltage 2.7 5.5 V 10
Ambient temperature range -40 125 °C 5
Output high voltage VOH 0.85 V 5 V, Iload = -5,-10,-15,-20 mA; min is 0.85×VDD 10
Output high voltage VOH 0.8 V 3 V, Iload = -3.6,-7.2,-10.8,-14.4 mA; min is 0.8×VDD 10
Max total output high current, all ports IOHT 30 mA 5 V 10
Max total output high current, all ports IOHT 20 mA 3 V 10
Output low voltage VOL 0.15 V 5 V, Iload = 5,10,15,20 mA; max is 0.15×VDD 10
Output low voltage VOL 0.2 V 3 V, Iload = 3.6,7.2,10.8,14.4 mA; max is 0.2×VDD 10
Max total output low current, all ports IOLT 30 mA 5 V 11
Max total output low current, all ports IOLT 20 mA 3 V 11
Input high voltage VIH 0.65 0.3 V 4.5≤VDD<5.5 V; min 0.65×VDD, max VDD + 0.3 11
Input high voltage VIH 0.7 0.3 V 2.7≤VDD<4.5 V; min 0.70×VDD, max VDD + 0.3 11
Input low voltage VIL -0.3 0.35 V 4.5≤VDD<5.5 V; max 0.35×VDD 11
Input low voltage VIL -0.3 0.3 V 2.7≤VDD<4.5 V; max 0.30×VDD 11
Input hysteresis Vhys 0.06 mV all digital inputs; typ printed 0.06×VDD 11
Input leakage current /IIn/ -1 0.1 1 µA VIN = VDD or VSS, per pin, high-impedance input 11
Total leakage current all port pins /IINTOT/ 0 0.1 2 µA VIN = VDD or VSS, high-impedance input 11
Pull-up resistor RPU 40 75 90 kΩ all digital inputs, internal pullup enabled 11
DC injection current, single pin IIC -2 2 mA VIN < VSS, VIN > VDD 11
DC injection current, total MCU IIC -5 25 mA sum of all stressed pins 11
Input capacitance CIn 5 7 pF all pins 11
RAM retention voltage VRAM 2 V 11
POR reset voltage VPOR 1.6 1.8 2 V 11
Falling LVD threshold low range VLVDL 2.5 2.55 2.6 V LVDV=0 11
Falling LVD threshold high range VLVDH 4.1 4.2 4.3 V LVDV=1 11
Low-voltage warning high range level 1 VLVW1H 4.2 4.3 4.4 V LVWV = 00 12
Low-voltage warning high range level 2 VLVW2H 4.3 4.4 4.5 V LVWV = 01 12
Low-voltage warning high range level 3 VLVW3H 4.4 4.5 4.6 V LVWV = 10 12
Low-voltage warning high range level 4 VLVW4H 4.5 4.6 4.7 V LVWV = 11 12
Low-voltage warning low range level 1 VLVW1L 2.5 2.6 2.7 V LVWV = 00 12
Low-voltage warning low range level 2 VLVW2L 2.6 2.7 2.8 V LVWV = 01 12
Low-voltage warning low range level 3 VLVW3L 2.7 2.8 2.9 V LVWV = 10 12
Low-voltage warning low range level 4 VLVW4L 2.8 2.9 3 V LVWV = 11 12
Buffered bandgap output VBG 1.19 1.2 1.21 V 12
LFOSC output frequency flfosc 7.9 8 8.1 MHz -40 °C to 125 °C 18
Factory-trimmed oscillator accuracy Δfint_ft -1.5 1.5 % T = 25 °C, VDD = 5 V 18
IRC deviation over temperature Δfint_t -10 10 % -40 °C to 125°C 18
System/core clock fSys 0 100 MHz DC to 100 14
Bus frequency fBus 0 50 MHz DC to 50 14
Oscillator frequency fhi 4 30 MHz 17
Flash program/erase voltage Vprog/erase 2.7 5.5 V -40°C to 125 °C 19
Flash endurance nEDR 10000 cycles TA = -40 °C to 125 °C (printed 10 k) 19
Flash data retention tRET 10 years TJavg = 85°C after up to 10,000 cycles 19
ADC supply voltage VAVDD 2.7 5.5 V absolute 19
ADC clock frequency fADC 10 MHz 20
ADC INL INL 1.5 LSB 20
ADC DNL DNL 1.5 LSB 20
Comparator supply voltage VAVDD 2.5 5.5 V 21
Comparator input offset voltage VAIO 40 mV 21
Comparator propagation delay tD 0.4 1 µs 21
Thermal resistance junction to ambient, 1S RθJA 71 °C/W 64 LQFP, single layer, natural convection 16
Thermal resistance junction to ambient, 2s2p RθJA 53 °C/W 64 LQFP, four layer, natural convection 16
Thermal resistance junction to board RθJB 35 °C/W 64 LQFP 16
Thermal resistance junction to case RθJC 20 °C/W 64 LQFP 16

CAD (KiCad official)

  • Symbol: AC7811QBFE
  • Footprint: Package_QFP:LQFP-64_7x7mm_P0.4mm
  • 3D model: LQFP-64(7x7) (KiCad packages3D, STEP)
  • 3D model files: ac7811qbfe-etched.step / ac7811qbfe-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ac7811qbfe.step / ac7811qbfe.glb are the bare package body.

Provenance

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

  • Datasheet: AutoChips datasheet (32 pp, sha256 436bde660d014306, retrieved 2026-10-27, 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-sonnet-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