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STM32L151ZET6

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STMicroelectronics Microcontrollers (MCU/MPU/SOC), LQFP-144(20x20). Pinout checked against ST's open pin data, KiCad symbol/footprint/3D.

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STM32L151ZET6

STMicroelectronics · Microcontrollers (MCU/MPU/SOC) · LQFP-144(20x20)

STM32L151ZET6 from STMicroelectronics, in a LQFP-144(20x20). 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 PE2 bidirectional 5 V tolerant (FT) I/O; default function PE2 after reset; alternate functions TIM3_ETR, LCD_SEG38, TRACECLK.
2 PE3 bidirectional 5 V tolerant (FT) I/O; default function PE3 after reset; alternate functions TIM3_CH1, LCD_SEG39, TRACED0.
3 PE4 bidirectional 5 V tolerant (FT) I/O; default function PE4 after reset; alternate functions TIM3_CH2, TRACED1.
4 PE5 bidirectional 5 V tolerant (FT) I/O; default function PE5 after reset; alternate functions TIM9_CH1, TRACED2.
5 PE6-WKUP3 bidirectional 5 V tolerant (FT) I/O; default function PE6; alternate functions TIM9_CH2, TRACED3; additional functions WKUP3, RTC_TAMP3.
6 VLCD power_in LCD power supply pin per Table 8; footnote 3 states it applies to STM32L152xE only and that on STM32L151xE devices this pin should be connected to VDD.
7 PC13-WKUP2 bidirectional 5 V tolerant (FT) I/O; default function PC13; additional functions WKUP2, RTC_TAMP1, RTC_TS, RTC_OUT.
8 PC14-OSC32_IN bidirectional Standard 3.3 V (TC) I/O; default function PC14; becomes OSC32_IN only when the LSE oscillator is on (LSEON bit in RCC_CSR), otherwise usable as GPIO.
9 PC15-OSC32_OUT bidirectional Standard 3.3 V (TC) I/O; default function PC15; becomes OSC32_OUT only when the LSE oscillator is on (LSEON bit in RCC_CSR), otherwise usable as GPIO.
10 PF0 bidirectional 5 V tolerant (FT) I/O; default function PF0; EVENTOUT is the only alternate function listed.
11 PF1 bidirectional 5 V tolerant (FT) I/O; default function PF1; EVENTOUT is the only alternate function listed.
12 PF2 bidirectional 5 V tolerant (FT) I/O; default function PF2; EVENTOUT is the only alternate function listed.
13 PF3 bidirectional 5 V tolerant (FT) I/O; default function PF3; EVENTOUT is the only alternate function listed.
14 PF4 bidirectional 5 V tolerant (FT) I/O; default function PF4; EVENTOUT is the only alternate function listed.
15 PF5 bidirectional 5 V tolerant (FT) I/O; default function PF5; EVENTOUT is the only alternate function listed.
16 VSS_5 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
17 VDD_5 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
18 PF6 bidirectional 5 V tolerant (FT) I/O; default function PF6; alternate functions TIM5_CH1, TIM5_ETR; additional function ADC_IN27.
19 PF7 bidirectional 5 V tolerant (FT) I/O; default function PF7; alternate function TIM5_CH2; additional functions ADC_IN28, COMP1_INP.
20 PF8 bidirectional 5 V tolerant (FT) I/O; default function PF8; alternate function TIM5_CH3; additional functions ADC_IN29, COMP1_INP.
21 PF9 bidirectional 5 V tolerant (FT) I/O; default function PF9; alternate function TIM5_CH4; additional functions ADC_IN30, COMP1_INP.
22 PF10 bidirectional 5 V tolerant (FT) I/O; default function PF10; additional functions ADC_IN31, COMP1_INP; EVENTOUT is the only alternate function listed.
23 PH0-OSC_IN bidirectional Standard 3.3 V (TC) I/O; default function PH0; becomes OSC_IN only when the HSE oscillator is on (HSEON bit in RCC_CR), otherwise usable as GPIO.
24 PH1-OSC_OUT bidirectional Standard 3.3 V (TC) I/O; default function PH1; becomes OSC_OUT only when the HSE oscillator is on (HSEON bit in RCC_CR), otherwise usable as GPIO.
25 NRST bidirectional Bidirectional reset pin with embedded weak pull-up resistor.
26 PC0 bidirectional 5 V tolerant (FT) I/O; default function PC0; alternate functions LCD_SEG18 and TIMx_IC1 (EVENTOUT); additional functions ADC_IN10, COMP1_INP.
27 PC1 bidirectional 5 V tolerant (FT) I/O; default function PC1; alternate functions LCD_SEG19 and TIMx_IC2 (EVENTOUT); additional functions ADC_IN11, COMP1_INP.
28 PC2 bidirectional 5 V tolerant (FT) I/O; default function PC2; alternate functions LCD_SEG20 and TIMx_IC3 (EVENTOUT); additional functions ADC_IN12, COMP1_INP.
29 PC3 bidirectional Standard 3.3 V (TC) I/O; default function PC3; alternate functions LCD_SEG21 and TIMx_IC4 (EVENTOUT); additional functions ADC_IN13, COMP1_INP.
30 VSSA power_in Analog ground pin; section 6.1 states all voltages are referenced to VSS.
31 VREF- power_in Negative reference voltage pin for the ADC; footnote 4 of Table 55 requires VSSA or VREF- to be tied to ground.
32 VREF+ power_in Positive ADC/DAC reference voltage input; Table 55 gives a minimum of 1.8 V and it may be grounded if neither the ADC nor the DAC is used.
33 VDDA power_in Analog supply pin; Table 55 specifies VDDA from 1.8 V to 3.6 V.
34 PA0-WKUP1 bidirectional 5 V tolerant (FT) I/O; default function PA0; alternate functions TIM2_CH1_ETR, TIM5_CH1, USART2_CTS; additional functions WKUP1, RTC_TAMP2, ADC_IN0, COMP1_INP.
35 PA1 bidirectional 5 V tolerant (FT) I/O; default function PA1; alternate functions TIM2_CH2, TIM5_CH2, USART2_RTS, LCD_SEG0; additional functions ADC_IN1, COMP1_INP, OPAMP1_VINP.
36 PA2 bidirectional 5 V tolerant (FT) I/O; default function PA2; alternate functions TIM2_CH3, TIM5_CH3, TIM9_CH1, USART2_TX, LCD_SEG1; additional functions ADC_IN2, COMP1_INP, OPAMP1_VINM.
37 PA3 bidirectional Standard 3.3 V (TC) I/O; default function PA3; alternate functions TIM2_CH4, TIM5_CH4, TIM9_CH2, USART2_RX, LCD_SEG2; additional functions ADC_IN3, COMP1_INP, OPAMP1_VOUT.
38 VSS_4 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
39 VDD_4 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
40 PA4 bidirectional Standard 3.3 V (TC) I/O; default function PA4; alternate functions SPI1_NSS, SPI3_NSS, I2S3_WS, USART2_CK; additional functions ADC_IN4, DAC_OUT1, COMP1_INP.
41 PA5 bidirectional Standard 3.3 V (TC) I/O; default function PA5; alternate functions TIM2_CH1_ETR, SPI1_SCK; additional functions ADC_IN5, DAC_OUT2, COMP1_INP.
42 PA6 bidirectional 5 V tolerant (FT) I/O; default function PA6; alternate functions TIM3_CH1, TIM10_CH1, SPI1_MISO, LCD_SEG3; additional functions ADC_IN6, COMP1_INP, OPAMP2_VINP.
43 PA7 bidirectional 5 V tolerant (FT) I/O; default function PA7; alternate functions TIM3_CH2, TIM11_CH1, SPI1_MOSI, LCD_SEG4; additional functions ADC_IN7, COMP1_INP, OPAMP2_VINM.
44 PC4 bidirectional 5 V tolerant (FT) I/O; default function PC4; alternate functions LCD_SEG22, TIMx_IC1 (EVENTOUT); additional functions ADC_IN14, COMP1_INP.
45 PC5 bidirectional 5 V tolerant (FT) I/O; default function PC5; alternate functions LCD_SEG23, TIMx_IC2 (EVENTOUT); additional functions ADC_IN15, COMP1_INP.
46 PB0 bidirectional Standard 3.3 V (TC) I/O; default function PB0; alternate functions TIM3_CH3, LCD_SEG5; additional functions ADC_IN8, COMP1_INP, OPAMP2_VOUT, VREF_OUT.
47 PB1 bidirectional 5 V tolerant (FT) I/O; default function PB1; alternate functions TIM3_CH4, LCD_SEG6; additional functions ADC_IN9, COMP1_INP, VREF_OUT.
48 PB2 bidirectional 5 V tolerant (FT) I/O; default function PB2/BOOT1; BOOT1 is listed as an alternate function and ADC_IN0b as an additional function.
49 PF11 bidirectional 5 V tolerant (FT) I/O; default function PF11; additional function ADC_IN1b; EVENTOUT is the only alternate function listed.
50 PF12 bidirectional 5 V tolerant (FT) I/O; default function PF12; additional function ADC_IN2b; EVENTOUT is the only alternate function listed.
51 VSS_6 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
52 VDD_6 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
53 PF13 bidirectional 5 V tolerant (FT) I/O; default function PF13; additional function ADC_IN3b; EVENTOUT is the only alternate function listed.
54 PF14 bidirectional 5 V tolerant (FT) I/O; default function PF14; additional function ADC_IN6b; EVENTOUT is the only alternate function listed.
55 PF15 bidirectional 5 V tolerant (FT) I/O; default function PF15; additional function ADC_IN7b; EVENTOUT is the only alternate function listed.
56 PG0 bidirectional 5 V tolerant (FT) I/O; default function PG0; additional function ADC_IN8b; EVENTOUT is the only alternate function listed.
57 PG1 bidirectional 5 V tolerant (FT) I/O; default function PG1; additional function ADC_IN9b; EVENTOUT is the only alternate function listed.
58 PE7 bidirectional Standard 3.3 V (TC) I/O; default function PE7; additional functions ADC_IN22, COMP1_INP; EVENTOUT is the only alternate function listed.
59 PE8 bidirectional Standard 3.3 V (TC) I/O; default function PE8; additional functions ADC_IN23, COMP1_INP; EVENTOUT is the only alternate function listed.
60 PE9 bidirectional Standard 3.3 V (TC) I/O; default function PE9; alternate function TIM2_CH1_ETR; additional functions ADC_IN24, COMP1_INP.
61 VSS_7 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
62 VDD_7 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
63 PE10 bidirectional Standard 3.3 V (TC) I/O; default function PE10; alternate function TIM2_CH2; additional functions ADC_IN25, COMP1_INP.
64 PE11 bidirectional 5 V tolerant (FT) I/O; default function PE11; alternate function TIM2_CH3; no additional functions listed.
65 PE12 bidirectional 5 V tolerant (FT) I/O; default function PE12; alternate functions TIM2_CH4, SPI1_NSS.
66 PE13 bidirectional 5 V tolerant (FT) I/O; default function PE13; alternate function SPI1_SCK.
67 PE14 bidirectional 5 V tolerant (FT) I/O; default function PE14; alternate function SPI1_MISO.
68 PE15 bidirectional 5 V tolerant (FT) I/O; default function PE15; alternate function SPI1_MOSI.
69 PB10 bidirectional 5 V tolerant (FT) I/O; default function PB10; alternate functions TIM2_CH3, I2C2_SCL, USART3_TX, LCD_SEG10.
70 PB11 bidirectional 5 V tolerant (FT) I/O; default function PB11; alternate functions TIM2_CH4, I2C2_SDA, USART3_RX, LCD_SEG11.
71 VSS_1 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
72 VDD_1 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
73 PB12 bidirectional 5 V tolerant (FT) I/O; default function PB12; alternate functions TIM10_CH1, I2C2_SMBA, SPI2_NSS, I2S2_WS, USART3_CK, LCD_SEG12; additional functions ADC_IN18, COMP1_INP.
74 PB13 bidirectional 5 V tolerant (FT) I/O; default function PB13; alternate functions TIM9_CH1, SPI2_SCK, I2S2_CK, USART3_CTS, LCD_SEG13; additional functions ADC_IN19, COMP1_INP.
75 PB14 bidirectional 5 V tolerant (FT) I/O; default function PB14; alternate functions TIM9_CH2, SPI2_MISO, USART3_RTS, LCD_SEG14; additional functions ADC_IN20, COMP1_INP.
76 PB15 bidirectional 5 V tolerant (FT) I/O; default function PB15; alternate functions TIM11_CH1, SPI2_MOSI, I2S2_SD, LCD_SEG15; additional functions ADC_IN21, COMP1_INP, RTC_REFIN.
77 PD8 bidirectional 5 V tolerant (FT) I/O; default function PD8; alternate functions USART3_TX, LCD_SEG28.
78 PD9 bidirectional 5 V tolerant (FT) I/O; default function PD9; alternate functions USART3_RX, LCD_SEG29.
79 PD10 bidirectional 5 V tolerant (FT) I/O; default function PD10; alternate functions USART3_CK, LCD_SEG30.
80 PD11 bidirectional 5 V tolerant (FT) I/O; default function PD11; alternate functions USART3_CTS, LCD_SEG31.
81 PD12 bidirectional 5 V tolerant (FT) I/O; default function PD12; alternate functions TIM4_CH1, USART3_RTS, LCD_SEG32.
82 PD13 bidirectional 5 V tolerant (FT) I/O; default function PD13; alternate functions TIM4_CH2, LCD_SEG33.
83 VSS_8 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
84 VDD_8 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
85 PD14 bidirectional 5 V tolerant (FT) I/O; default function PD14; alternate functions TIM4_CH3, LCD_SEG34.
86 PD15 bidirectional 5 V tolerant (FT) I/O; default function PD15; alternate functions TIM4_CH4, LCD_SEG35.
87 PG2 bidirectional 5 V tolerant (FT) I/O; default function PG2; additional function ADC_IN10b; EVENTOUT is the only alternate function listed.
88 PG3 bidirectional 5 V tolerant (FT) I/O; default function PG3; additional function ADC_IN11b; EVENTOUT is the only alternate function listed.
89 PG4 bidirectional 5 V tolerant (FT) I/O; default function PG4; additional function ADC_IN12b; EVENTOUT is the only alternate function listed.
90 PG5 bidirectional 5 V tolerant (FT) I/O; default function PG5; EVENTOUT is the only alternate function listed.
91 PG6 bidirectional 5 V tolerant (FT) I/O; default function PG6; EVENTOUT is the only alternate function listed.
92 PG7 bidirectional 5 V tolerant (FT) I/O; default function PG7; EVENTOUT is the only alternate function listed.
93 PG8 bidirectional 5 V tolerant (FT) I/O; default function PG8; EVENTOUT is the only alternate function listed.
94 VSS_9 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
95 VDD_9 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
96 PC6 bidirectional 5 V tolerant (FT) I/O; default function PC6; alternate functions TIM3_CH1, I2S2_MCK, LCD_SEG24.
97 PC7 bidirectional 5 V tolerant (FT) I/O; default function PC7; alternate functions TIM3_CH2, I2S3_MCK, LCD_SEG25.
98 PC8 bidirectional 5 V tolerant (FT) I/O; default function PC8; alternate functions TIM3_CH3, LCD_SEG26.
99 PC9 bidirectional 5 V tolerant (FT) I/O; default function PC9; alternate functions TIM3_CH4, LCD_SEG27.
100 PA8 bidirectional 5 V tolerant (FT) I/O; default function PA8; alternate functions USART1_CK, MCO, LCD_COM0.
101 PA9 bidirectional 5 V tolerant (FT) I/O; default function PA9; alternate functions USART1_TX, LCD_COM1.
102 PA10 bidirectional 5 V tolerant (FT) I/O; default function PA10; alternate functions USART1_RX, LCD_COM2.
103 PA11 bidirectional 5 V tolerant (FT) I/O; default function PA11; alternate functions USART1_CTS, SPI1_MISO; additional function USB_DM.
104 PA12 bidirectional 5 V tolerant (FT) I/O; default function PA12; alternate functions USART1_RTS, SPI1_MOSI; additional function USB_DP.
105 PA13 bidirectional 5 V tolerant (FT) I/O; default function JTMS-SWDIO; JTMS-SWDIO is the SWJ debug data pin.
106 PH2 bidirectional 5 V tolerant (FT) I/O; default function PH2; no alternate or additional functions listed.
107 VSS_2 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
108 VDD_2 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
109 PA14 bidirectional 5 V tolerant (FT) I/O; default function JTCK-SWCLK; JTCK-SWCLK is the SWJ debug clock pin.
110 PA15 bidirectional 5 V tolerant (FT) I/O; default function JTDI; alternate functions TIM2_CH1_ETR, SPI1_NSS, SPI3_NSS, I2S3_WS, LCD_SEG17.
111 PC10 bidirectional 5 V tolerant (FT) I/O; default function PC10; alternate functions SPI3_SCK, I2S3_CK, USART3_TX, UART4_TX, LCD_SEG28, LCD_SEG40, LCD_COM4.
112 PC11 bidirectional 5 V tolerant (FT) I/O; default function PC11; alternate functions SPI3_MISO, USART3_RX, UART4_RX, LCD_SEG29, LCD_SEG41, LCD_COM5.
113 PC12 bidirectional 5 V tolerant (FT) I/O; default function PC12; alternate functions SPI3_MOSI, I2S3_SD, USART3_CK, UART5_TX, LCD_SEG30, LCD_SEG42, LCD_COM6.
114 PD0 bidirectional 5 V tolerant (FT) I/O; default function PD0; alternate functions TIM9_CH1, SPI2_NSS, I2S2_WS.
115 PD1 bidirectional 5 V tolerant (FT) I/O; default function PD1; alternate functions SPI2_SCK, I2S2_CK.
116 PD2 bidirectional 5 V tolerant (FT) I/O; default function PD2; alternate functions TIM3_ETR, UART5_RX, LCD_SEG31, LCD_SEG43, LCD_COM7.
117 PD3 bidirectional 5 V tolerant (FT) I/O; default function PD3; alternate functions SPI2_MISO, USART2_CTS.
118 PD4 bidirectional 5 V tolerant (FT) I/O; default function PD4; alternate functions SPI2_MOSI, I2S2_SD, USART2_RTS.
119 PD5 bidirectional 5 V tolerant (FT) I/O; default function PD5; alternate function USART2_TX.
120 VSS_10 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
121 VDD_10 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
122 PD6 bidirectional 5 V tolerant (FT) I/O; default function PD6; alternate function USART2_RX.
123 PD7 bidirectional 5 V tolerant (FT) I/O; default function PD7; alternate functions TIM9_CH2, USART2_CK.
124 PG9 bidirectional 5 V tolerant (FT) I/O; default function PG9; EVENTOUT is the only alternate function listed.
125 PG10 bidirectional 5 V tolerant (FT) I/O; default function PG10; EVENTOUT is the only alternate function listed.
126 PG11 bidirectional 5 V tolerant (FT) I/O; default function PG11; EVENTOUT is the only alternate function listed.
127 PG12 bidirectional 5 V tolerant (FT) I/O; default function PG12; EVENTOUT is the only alternate function listed.
128 PG13 bidirectional 5 V tolerant (FT) I/O; default function PG13; EVENTOUT is the only alternate function listed.
129 PG14 bidirectional 5 V tolerant (FT) I/O; default function PG14; EVENTOUT is the only alternate function listed.
130 VSS_11 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
131 VDD_11 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.
132 PG15 bidirectional 5 V tolerant (FT) I/O; default function PG15; EVENTOUT is the only alternate function listed.
133 PB3 bidirectional 5 V tolerant (FT) I/O; default function JTDO; alternate functions TIM2_CH2, SPI1_SCK, SPI3_SCK, I2S3_CK, LCD_SEG7; additional function COMP2_INM.
134 PB4 bidirectional 5 V tolerant (FT) I/O; default function NJTRST; alternate functions TIM3_CH1, SPI1_MISO, SPI3_MISO, LCD_SEG8, NJTRST; additional function COMP2_INP.
135 PB5 bidirectional 5 V tolerant (FT) I/O; default function PB5; alternate functions TIM3_CH2, I2C1_SMBA, SPI1_MOSI, SPI3_MOSI, I2S3_SD, LCD_SEG9; additional function COMP2_INP.
136 PB6 bidirectional 5 V tolerant (FT) I/O; default function PB6; alternate functions TIM4_CH1, I2C1_SCL, USART1_TX; additional function COMP2_INP.
137 PB7 bidirectional 5 V tolerant (FT) I/O; default function PB7; alternate functions TIM4_CH2, I2C1_SDA, USART1_RX; additional functions COMP2_INP, PVD_IN.
138 BOOT0 input Dedicated BOOT0 input pin (type B in Table 7 legend).
139 PB8 bidirectional 5 V tolerant (FT) I/O; default function PB8; alternate functions TIM4_CH3, TIM10_CH1, I2C1_SCL, LCD_SEG16.
140 PB9 bidirectional 5 V tolerant (FT) I/O; default function PB9; alternate functions TIM4_CH4, TIM11_CH1, I2C1_SDA, LCD_COM3.
141 PE0 bidirectional 5 V tolerant (FT) I/O; default function PE0; alternate functions TIM4_ETR, TIM10_CH1, LCD_SEG36.
142 PE1 bidirectional 5 V tolerant (FT) I/O; default function PE1; alternate functions TIM11_CH1, LCD_SEG37.
143 VSS_3 power_in Ground pin; all voltages are referenced to VSS per section 6.1.
144 VDD_3 power_in Digital supply pin; device supply range is 1.65 V to 3.6 V.

Key specifications

Parameter Value
Manufacturer STMicroelectronics
Package LQFP-144(20x20)
Category Embedded Processors & Controllers
Pins 144

CAD (KiCad official)

  • Symbol: STM32L151ZET6
  • Footprint: Package_QFP:LQFP-144_20x20mm_P0.5mm
  • 3D model: LQFP-144(20x20) (KiCad packages3D, STEP)
  • 3D model files: stm32l151zet6-etched.step / stm32l151zet6-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); stm32l151zet6.step / stm32l151zet6.glb are the bare package body.

Provenance

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

  • Datasheet: STMicroelectronics datasheet (136 pp, sha256 6ba5d188efc840bc, retrieved 2026-10-08, 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