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Contents

Pinout
Key specifications
CAD (KiCad official)
Provenance

README

markdown

STM32L071RZT6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)

STM32L071RZT6 from STMicroelectronics, in a LQFP-64(10x10). 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	VDD	power_in	Main digital supply pin; operating range 1.65 V to 3.6 V (BOR disabled) or 1.8 V to 3.6 V (BOR enabled at power-on).
2	PC13	bidirectional	5-V-tolerant I/O (FT); no alternate functions; additional functions RTC_TAMP1/RTC_TS/RTC_OUT/WKUP2; floating input at reset.
3	PC14	bidirectional	Standard 3.3 V I/O (TC) multiplexed with 32.768 kHz LSE crystal oscillator input (OSC32_IN); GPIO function active after reset.
4	PC15	bidirectional	Standard 3.3 V I/O (TC) multiplexed with 32.768 kHz LSE crystal oscillator output (OSC32_OUT); GPIO function active after reset.
5	PH0	bidirectional	Standard 3.3 V I/O (TC) multiplexed with HSE crystal oscillator input (OSC_IN); GPIO function active after reset.
6	PH1	bidirectional	Standard 3.3 V I/O (TC) multiplexed with HSE crystal oscillator output (OSC_OUT); GPIO function active after reset.
7	NRST	bidirectional	Active-low bidirectional reset pin with embedded 25-65 kΩ pull-up; VIL max = 0.8 V, VIH min = 1.4 V; pulses below 50 ns filtered.
8	PC0	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions LPTIM1_IN1, EVENTOUT, LPUART1_RX, I2C3_SCL; additional function ADC_IN10.
9	PC1	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions LPTIM1_OUT, EVENTOUT, LPUART1_TX, I2C3_SDA; additional function ADC_IN11.
10	PC2	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions LPTIM1_IN2, SPI2_MISO/I2S2_MCK; additional function ADC_IN12.
11	PC3	bidirectional	5-V-tolerant I/O (FT); alternate functions LPTIM1_ETR, SPI2_MOSI/I2S2_SD; additional function ADC_IN13.
12	VSSA	power_in	Analog ground reference for ADC, comparators, PLL, and RC oscillators; must be connected to VSS.
13	VDDA	power_in	Analog power supply for ADC, comparators, PLL, and RC oscillators; 1.65 V to 3.6 V; must match VDD within 300 mV.
14	PA0	bidirectional	I/O with I/O structure marked 'TTa' in datasheet (see review note); alternate functions TIM2_CH1, USART2_CTS, TIM2_ETR, USART4_TX, COMP1_OUT; additional functions COMP1_INM, ADC_IN0, RTC_TAMP2/WKUP1.
15	PA1	bidirectional	5-V-tolerant I/O (FT); alternate functions EVENTOUT, TIM2_CH2, USART2_RTS_DE, TIM21_ETR, USART4_RX; additional functions COMP1_INP, ADC_IN1.
16	PA2	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM21_CH1, TIM2_CH3, USART2_TX, LPUART1_TX, COMP2_OUT; additional functions COMP2_INM, ADC_IN2.
17	PA3	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM21_CH2, TIM2_CH4, USART2_RX, LPUART1_RX; additional functions COMP2_INP, ADC_IN3.
18	VSS	power_in	Digital ground; must be connected to external ground supply.
19	VDD	power_in	Main digital supply pin; operating range 1.65 V to 3.6 V.
20	PA4	bidirectional	Standard 3.3 V I/O (TC); alternate functions SPI1_NSS, USART2_CK, TIM22_ETR; additional functions COMP1_INM, COMP2_INM, ADC_IN4.
21	PA5	bidirectional	Standard 3.3 V I/O (TC); alternate functions SPI1_SCK, TIM2_ETR, TIM2_CH1; additional functions COMP1_INM, COMP2_INM, ADC_IN5.
22	PA6	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI1_MISO, TIM3_CH1, LPUART1_CTS, TIM22_CH1, EVENTOUT, COMP1_OUT; additional function ADC_IN6.
23	PA7	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI1_MOSI, TIM3_CH2, TIM22_CH2, EVENTOUT, COMP2_OUT; additional function ADC_IN7.
24	PC4	bidirectional	5-V-tolerant I/O (FT); alternate functions EVENTOUT, LPUART1_TX; additional function ADC_IN14.
25	PC5	bidirectional	5-V-tolerant I/O (FT); alternate function LPUART1_RX; additional function ADC_IN15.
26	PB0	bidirectional	5-V-tolerant I/O (FT); alternate functions EVENTOUT, TIM3_CH3; additional functions ADC_IN8, VREF_OUT.
27	PB1	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM3_CH4, LPUART1_RTS_DE; additional functions ADC_IN9, VREF_OUT.
28	PB2	bidirectional	5-V-tolerant I/O (FT); alternate functions LPTIM1_OUT, I2C3_SMBA.
29	PB10	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM2_CH3, LPUART1_TX, SPI2_SCK/I2S2_CK, I2C2_SCL, LPUART1_RX.
30	PB11	bidirectional	5-V-tolerant I/O (FT); alternate functions EVENTOUT, TIM2_CH4, LPUART1_RX, I2C2_SDA, LPUART1_TX.
31	VSS	power_in	Digital ground; must be connected to external ground supply.
32	VDD	power_in	Main digital supply pin; operating range 1.65 V to 3.6 V.
33	PB12	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI2_NSS/I2S2_WS, LPUART1_RTS_DE, I2C2_SMBA, EVENTOUT.
34	PB13	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions SPI2_SCK/I2S2_CK, MCO, LPUART1_CTS, I2C2_SCL, TIM21_CH1.
35	PB14	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions SPI2_MISO/I2S2_MCK, RTC_OUT, LPUART1_RTS_DE, I2C2_SDA, TIM21_CH2.
36	PB15	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI2_MOSI/I2S2_SD, RTC_REFIN.
37	PC6	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM22_CH1, TIM3_CH1.
38	PC7	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM22_CH2, TIM3_CH2.
39	PC8	bidirectional	5-V-tolerant I/O (FT); alternate functions TIM22_ETR, TIM3_CH3.
40	PC9	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions TIM21_ETR, TIM3_CH4, I2C3_SDA.
41	PA8	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions MCO, EVENTOUT, USART1_CK, I2C3_SCL.
42	PA9	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions MCO, USART1_TX, I2C1_SCL, I2C3_SMBA.
43	PA10	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions USART1_RX, I2C1_SDA.
44	PA11	bidirectional	5-V-tolerant I/O (FT) powered by VDDIO2 (not VDD); alternate functions SPI1_MISO, EVENTOUT, USART1_CTS, COMP1_OUT.
45	PA12	bidirectional	5-V-tolerant I/O (FT) powered by VDDIO2 (not VDD); alternate functions SPI1_MOSI, EVENTOUT, USART1_RTS_DE, COMP2_OUT.
46	PA13	bidirectional	5-V-tolerant I/O (FT); default function after reset SWDIO (Serial Wire Debug data, AF0); alternate functions SWDIO, LPUART1_RX.
47	VSS	power_in	Digital ground; must be connected to external ground supply.
48	VDDIO2	power_in	Independent I/O supply for PA11 and PA12; 1.65 V to 3.6 V; maximum total current 25 mA; independent from VDD and VDDA.
49	PA14	bidirectional	5-V-tolerant I/O (FT); default function after reset SWCLK (Serial Wire Debug clock, AF0); alternate functions SWCLK, USART2_TX, LPUART1_TX.
50	PA15	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI1_NSS, TIM2_ETR, EVENTOUT, USART2_RX, TIM2_CH1, USART4_RTS_DE.
51	PC10	bidirectional	5-V-tolerant I/O (FT); alternate functions LPUART1_TX, USART4_TX.
52	PC11	bidirectional	5-V-tolerant I/O (FT); alternate functions LPUART1_RX, USART4_RX.
53	PC12	bidirectional	5-V-tolerant I/O (FT); alternate functions USART5_TX, USART4_CK.
54	PD2	bidirectional	5-V-tolerant I/O (FT); alternate functions LPUART1_RTS_DE, TIM3_ETR, USART5_RX.
55	PB3	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI1_SCK, TIM2_CH2, EVENTOUT, USART1_RTS_DE, USART5_TX; additional function COMP2_INM.
56	PB4	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions SPI1_MISO, TIM3_CH1, TIM22_CH1, USART1_CTS, USART5_RX, I2C3_SDA; additional function COMP2_INP.
57	PB5	bidirectional	5-V-tolerant I/O (FT); alternate functions SPI1_MOSI, LPTIM1_IN1, I2C1_SMBA, TIM3_CH2/TIM22_CH2, USART1_CK, USART5_CK/USART5_RTS_DE; additional function COMP2_INP.
58	PB6	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions USART1_TX, I2C1_SCL, LPTIM1_ETR; additional function COMP2_INP.
59	PB7	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions USART1_RX, I2C1_SDA, LPTIM1_IN2, USART4_CTS; additional functions COMP2_INP, VREF_PVD_IN.
60	BOOT0	input	Dedicated BOOT0 input pin (type B); selects boot mode at startup with nBOOT1 option bit; VIL max = 0.14×VDD, input range 0 to VDD+4.0 V.
61	PB8	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate function I2C1_SCL.
62	PB9	bidirectional	5-V-tolerant FM+-capable I/O (FTf); alternate functions EVENTOUT, I2C1_SDA, SPI2_NSS/I2S2_WS.
63	VSS	power_in	Digital ground; must be connected to external ground supply.
64	VDD	power_in	Main digital supply pin; operating range 1.65 V to 3.6 V.

Key specifications

Parameter	Value
Manufacturer	STMicroelectronics
Package	LQFP-64(10x10)
Category	Embedded Processors & Controllers
Pins	64

CAD (KiCad official)

Symbol: STM32L071RZT6
Footprint: Package_QFP:LQFP-64_10x10mm_P0.5mm
3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
3D model files: stm32l071rzt6-etched.step / stm32l071rzt6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32l071rzt6.step / stm32l071rzt6.glb are the bare package body.

Provenance

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

Datasheet: STMicroelectronics datasheet (139 pp, sha256 5d06ff859a839555, retrieved 2026-09-27, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.2, primary claude-haiku-4-5-20251001 (text), consensus claude-sonnet-4-6 (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