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STM32G081CBT6
Public Made by Adomby adom
STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-48(7x7). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSTM32G081CBT6
STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-48(7x7)
STM32G081CBT6 from STMicroelectronics, in a LQFP-48(7x7). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model, then checked against ST open pin data); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | PC13 | bidirectional | 5 V-tolerant I/O (FT) on the power-switch domain, which sinks only 3 mA, so output use is limited to 2 MHz with 30 pF load and it must not source current such as an LED; alternate function TIM1_BKIN, additional functions TAMP_IN1, RTC_TS, RTC_OUT1, WKUP2. |
| 2 | PC14-OSC32_IN | bidirectional | 5 V-tolerant I/O (FT) on the power-switch domain with the same 3 mA limit as PC13; alternate function TIM1_BKIN2, additional function OSC32_IN (32.768 kHz LSE oscillator input). |
| 3 | PC15-OSC32_OUT | bidirectional | 5 V-tolerant I/O (FT) on the power-switch domain with the same 3 mA limit as PC13; alternate functions OSC32_EN, OSC_EN, TIM15_BKIN, additional function OSC32_OUT (32.768 kHz LSE oscillator output). |
| 4 | VBAT | power_in | Backup supply input from 1.55 V to 3.6 V that powers the RTC, TAMP, the 32.768 kHz oscillator and backup registers when VDD is not present. |
| 5 | VREF+ | power_in | Analog reference input, or output of the internal voltage reference buffer when enabled; it must equal VDDA when VDDA < 2 V and be between 2 V and VDDA when VDDA ≥ 2 V. |
| 6 | VDD/VDDA | power_in | Main supply input from 1.7 V to 3.6 V for the internal regulator, I/O ring and analog blocks, with minimum 1.62 V for ADC/COMP, 1.8 V for DAC and 2.4 V for VREFBUF operation. |
| 7 | VSS/VSSA | power_in | Ground reference for the digital and analog supplies; all voltages are referenced to VSS. |
| 8 | PF0-OSC_IN | bidirectional | 5 V-tolerant I/O (FT) with alternate function TIM14_CH1 and additional function OSC_IN (high-speed crystal input). |
| 9 | PF1-OSC_OUT | bidirectional | 5 V-tolerant I/O (FT) with alternate functions OSC_EN and TIM15_CH1N and additional function OSC_OUT (high-speed crystal output). |
| 10 | PF2-NRST | bidirectional | Bidirectional reset pin with embedded weak pull-up resistor; it is also a 5 V-tolerant I/O (FT) with alternate function MCO. |
| 11 | PA0 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI2_SCK, USART2_CTS, TIM2_CH1_ETR, USART4_TX, LPTIM1_OUT, UCPD2_FRSTX and COMP1_OUT, additional functions COMP1_INM, ADC_IN0, TAMP_IN2 and WKUP1. |
| 12 | PA1 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_SCK/I2S1_CK, USART2_RTS_DE_CK, TIM2_CH2, USART4_RX, TIM15_CH1N, I2C1_SMBA and EVENTOUT, additional functions COMP1_INP and ADC_IN1. |
| 13 | PA2 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_MOSI/I2S1_SD, USART2_TX, TIM2_CH3, UCPD1_FRSTX, TIM15_CH1, LPUART1_TX and COMP2_OUT, additional functions COMP2_INM, ADC_IN2, WKUP4 and LSCO. |
| 14 | PA3 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI2_MISO, USART2_RX, TIM2_CH4, UCPD2_FRSTX, TIM15_CH2, LPUART1_RX and EVENTOUT, additional functions COMP2_INP and ADC_IN3. |
| 15 | PA4 | bidirectional | 3.6 V-tolerant I/O with analog switch function (TT_a); alternate functions include SPI1_NSS/I2S1_WS, SPI2_MOSI, TIM14_CH1, LPTIM2_OUT, UCPD2_FRSTX and EVENTOUT, additional functions ADC_IN4, DAC_OUT1 and RTC_OUT2. |
| 16 | PA5 | bidirectional | 3.6 V-tolerant I/O with analog switch function (TT_a); alternate functions include SPI1_SCK/I2S1_CK, CEC, TIM2_CH1_ETR, USART3_TX, LPTIM2_ETR, UCPD1_FRSTX and EVENTOUT, additional functions ADC_IN5 and DAC_OUT2. |
| 17 | PA6 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_MISO/I2S1_MCK, TIM3_CH1, TIM1_BKIN, USART3_CTS, TIM16_CH1, LPUART1_CTS and COMP1_OUT, additional function ADC_IN6. |
| 18 | PA7 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM1_CH1N, TIM14_CH1, TIM17_CH1, UCPD1_FRSTX and COMP2_OUT, additional function ADC_IN7. |
| 19 | PB0 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_NSS/I2S1_WS, TIM3_CH3, TIM1_CH2N, USART3_RX, LPTIM1_OUT, UCPD1_FRSTX and COMP1_OUT, additional function ADC_IN8. |
| 20 | PB1 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include TIM14_CH1, TIM3_CH4, TIM1_CH3N, USART3_RTS_DE_CK, LPTIM2_IN1, LPUART1_RTS_DE and EVENTOUT, additional functions COMP1_INM and ADC_IN9. |
| 21 | PB2 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI2_MISO, USART3_TX, LPTIM1_OUT and EVENTOUT, additional functions COMP1_INP and ADC_IN10. |
| 22 | PB10 | bidirectional | 5 V-tolerant I/O with analog switch and Fm+ capability (FT_fa); alternate functions include CEC, LPUART1_RX, TIM2_CH3, USART3_TX, SPI2_SCK, I2C2_SCL and COMP1_OUT, additional function ADC_IN11. |
| 23 | PB11 | bidirectional | 5 V-tolerant I/O with analog switch and Fm+ capability (FT_fa); alternate functions include SPI2_MOSI, LPUART1_TX, TIM2_CH4, USART3_RX, I2C2_SDA and COMP2_OUT, additional function ADC_IN15. |
| 24 | PB12 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI2_NSS, LPUART1_RTS_DE, TIM1_BKIN, TIM15_BKIN, UCPD2_FRSTX and EVENTOUT, additional function ADC_IN16. |
| 25 | PB13 | bidirectional | 5 V-tolerant Fm+ capable I/O (FT_f); alternate functions include SPI2_SCK, LPUART1_CTS, TIM1_CH1N, USART3_CTS, TIM15_CH1N, I2C2_SCL and EVENTOUT. |
| 26 | PB14 | bidirectional | 5 V-tolerant Fm+ capable I/O (FT_f); alternate functions include SPI2_MISO, UCPD1_FRSTX, TIM1_CH2N, USART3_RTS_DE_CK, TIM15_CH1, I2C2_SDA and EVENTOUT. |
| 27 | PB15 | bidirectional | 5 V-tolerant USB Type-C PD capable I/O (FT_c); alternate functions include SPI2_MOSI, TIM1_CH3N, TIM15_CH1N, TIM15_CH2 and EVENTOUT, additional functions UCPD1_CC2 and RTC_REFIN; a pull-down may be present at reset (note 3). |
| 28 | PA8 | bidirectional | 5 V-tolerant USB Type-C PD capable I/O (FT_c); alternate functions include MCO, SPI2_NSS, TIM1_CH1, LPTIM2_OUT and EVENTOUT, additional function UCPD1_CC1; a pull-down may be present at reset (note 3). |
| 29 | PA9 | bidirectional | 5 V-tolerant Fm+ capable I/O with USB Type-C PD dead-battery function (FT_fd); alternate functions include MCO, USART1_TX, TIM1_CH2, SPI2_MISO, TIM15_BKIN, I2C1_SCL and EVENTOUT, additional function UCPD1_DBCC1; a pull-down may be present at reset (note 3). |
| 30 | PC6 | bidirectional | 5 V-tolerant I/O (FT) with alternate functions UCPD1_FRSTX, TIM3_CH1 and TIM2_CH3. |
| 31 | PC7 | bidirectional | 5 V-tolerant I/O (FT) with alternate functions UCPD2_FRSTX, TIM3_CH2 and TIM2_CH4. |
| 32 | PA10 | bidirectional | 5 V-tolerant Fm+ capable I/O with USB Type-C PD dead-battery function (FT_fd); alternate functions include SPI2_MOSI, USART1_RX, TIM1_CH3, TIM17_BKIN, I2C1_SDA and EVENTOUT, additional function UCPD1_DBCC2; a pull-down may be present at reset (note 3). |
| 33 | PA11 [PA9] | bidirectional | 5 V-tolerant Fm+ capable I/O (FT_f); alternate functions include SPI1_MISO/I2S1_MCK, USART1_CTS, TIM1_CH4, TIM1_BKIN2, I2C2_SCL and COMP1_OUT; this pin is the default location of the PA9 remap (note 4). |
| 34 | PA12 [PA10] | bidirectional | 5 V-tolerant Fm+ capable I/O (FT_f); alternate functions include SPI1_MOSI/I2S1_SD, USART1_RTS_DE_CK, TIM1_ETR, I2S_CKIN, I2C2_SDA and COMP2_OUT; this pin is the default location of the PA10 remap (note 4). |
| 35 | PA13 | bidirectional | 5 V-tolerant I/O (FT) that after reset is the SWDIO debug function with an internal pull-up enabled; additional alternate functions IR_OUT and EVENTOUT. |
| 36 | PA14-BOOT0 | bidirectional | 5 V-tolerant I/O (FT) that after reset is the SWCLK debug function with an internal pull-down enabled; alternate functions include USART2_TX and EVENTOUT, and it doubles as the BOOT0 boot-mode pin. |
| 37 | PA15 | bidirectional | 5 V-tolerant I/O (FT) with alternate functions SPI1_NSS/I2S1_WS, USART2_RX, TIM2_CH1_ETR, USART4_RTS_DE_CK, USART3_RTS_DE_CK and EVENTOUT. |
| 38 | PD0 | bidirectional | 5 V-tolerant USB Type-C PD capable I/O (FT_c); alternate functions include EVENTOUT, SPI2_NSS and TIM16_CH1, additional function UCPD2_CC1; a pull-down may be present at reset (note 3). |
| 39 | PD1 | bidirectional | 5 V-tolerant I/O with USB Type-C PD dead-battery function (FT_d); alternate functions include EVENTOUT, SPI2_SCK and TIM17_CH1, additional function UCPD2_DBCC1; a pull-down may be present at reset (note 3). |
| 40 | PD2 | bidirectional | 5 V-tolerant USB Type-C PD capable I/O (FT_c); alternate functions include USART3_RTS_DE_CK, TIM3_ETR and TIM1_CH1N, additional function UCPD2_CC2; a pull-down may be present at reset (note 3). |
| 41 | PD3 | bidirectional | 5 V-tolerant I/O with USB Type-C PD dead-battery function (FT_d); alternate functions include USART2_CTS, SPI2_MISO and TIM1_CH2N, additional function UCPD2_DBCC2; a pull-down may be present at reset (note 3). |
| 42 | PB3 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_SCK/I2S1_CK, TIM1_CH2, TIM2_CH2, USART1_RTS_DE_CK and EVENTOUT, additional function COMP2_INM. |
| 43 | PB4 | bidirectional | 5 V-tolerant I/O with analog switch function (FT_a); alternate functions include SPI1_MISO/I2S1_MCK, TIM3_CH1, USART1_CTS, TIM17_BKIN and EVENTOUT, additional function COMP2_INP. |
| 44 | PB5 | bidirectional | 5 V-tolerant I/O (FT); alternate functions include SPI1_MOSI/I2S1_SD, TIM3_CH2, TIM16_BKIN, LPTIM1_IN1, I2C1_SMBA and COMP2_OUT, additional function WKUP6. |
| 45 | PB6 | bidirectional | 5 V-tolerant I/O with analog switch and Fm+ capability (FT_fa); alternate functions include USART1_TX, TIM1_CH3, TIM16_CH1N, SPI2_MISO, LPTIM1_ETR, I2C1_SCL and EVENTOUT, additional function COMP2_INP. |
| 46 | PB7 | bidirectional | 5 V-tolerant I/O with analog switch and Fm+ capability (FT_fa); alternate functions include USART1_RX, SPI2_MOSI, TIM17_CH1N, USART4_CTS, LPTIM1_IN2, I2C1_SDA and EVENTOUT, additional functions COMP2_INM and PVD_IN. |
| 47 | PB8 | bidirectional | 5 V-tolerant Fm+ capable I/O (FT_f); alternate functions include CEC, SPI2_SCK, TIM16_CH1, USART3_TX, TIM15_BKIN, I2C1_SCL and EVENTOUT. |
| 48 | PB9 | bidirectional | 5 V-tolerant Fm+ capable I/O (FT_f); alternate functions include IR_OUT, UCPD2_FRSTX, TIM17_CH1, USART3_RX, SPI2_NSS, I2C1_SDA and EVENTOUT. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | LQFP-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 48 |
CAD (KiCad official)
- Symbol:
STM32G081CBT6 - Footprint:
Package_QFP:LQFP-48_7x7mm_P0.5mm - 3D model: LQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
stm32g081cbt6-etched.step/stm32g081cbt6-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);stm32g081cbt6.step/stm32g081cbt6.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (134 pp, sha256
940ddef4661bd787, retrieved 2026-10-08, 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).