| Pin | Symbol | Type | Function (EN) |
|---|---|---|---|
| 1 | PB9 BOOT0 - | I/O | Multiplexed I/O & Peripheral Pin PB9 BOOT0 - (General) |
| 2 | PC14 - OSC32_IN | I/O | Multiplexed I/O & Peripheral Pin PC14 - OSC32_IN (RTC/CLK) |
| 3 | PC15 - OSC32_OUT | I/O | Multiplexed I/O & Peripheral Pin PC15 - OSC32_OUT (RTC/CLK) |
| 4 | NRST | I | System Enable & Hardware Reset (NRST) |
| 5 | PA0CK IN -_ | I/O | Multiplexed I/O & Peripheral Pin PA0CK IN -_ (UART, ADC, PWM, RTC/CLK) |
| 6 | PA1 | I/O | Multiplexed I/O & Peripheral Pin PA1 (UART, I2C, ADC, PWM) |
| 7 | PA4 | I/O | Multiplexed I/O & Peripheral Pin PA4 (UART, SPI, I2C, ADC) |
| 8 | PA7 | I/O | Multiplexed I/O & Peripheral Pin PA7 (UART, SPI, ADC) |
| 9 | VSS | GND | Ground Reference Pin (VSS) |
| 10 | VDD | Power | Power Supply Input (VDD — 3.3V VDD (Max 4.0V)) |
| 11 | PA9 | I/O | Multiplexed I/O & Peripheral Pin PA9 (UART, I2C, RTC/CLK) |
| 12 | PA10 | I/O | Multiplexed I/O & Peripheral Pin PA10 (UART, I2C, PWM, RTC/CLK) |
| 13 | PA13 | I/O | Multiplexed I/O & Peripheral Pin PA13 (SPI, I2C, SWD/JTAG) |
| 14 | PA14 | I/O | Multiplexed I/O & Peripheral Pin PA14 (UART, SPI, I2C, SWD/JTAG) |
STM32L011 (UFQFPN-20(3x3))
STM32L011 (WLCSP-25(2.1x2.1))
| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit TSSOP-14 | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Manufactured by ST, the STM32L011D4P7 is housed in a TSSOP-14 package with 14 pins and a 0.65 mm lead pitch, supporting a VCC supply range of 1.65 V to 3.6 V. Key pins include: 1 (PB9 BOOT0 -: Multiplexed I/O & Peripheral Pin PB9 BOOT0 - (General)), 2 (PC14 - OSC32_IN: Multiplexed I/O & Peripheral Pin PC14 - OSC32_IN (RTC/CLK)), 3 (PC15 - OSC32_OUT: Multiplexed I/O & Peripheral Pin PC15 - OSC32_OUT (RTC/CLK)), 4 (NRST: System Enable & Hardware Reset (NRST)), 5 (PA0CK IN -_: Multiplexed I/O & Peripheral Pin PA0CK IN -_ (UART, ADC, PWM, RTC/CLK)), 6 (PA1: Multiplexed I/O & Peripheral Pin PA1 (UART, I2C, ADC, PWM)).
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), STM32L011D4P7 (TSSOP-14) has a nominal body envelope of 4.40 × 5.00 mm, pitch e = 0.65 mm, and 14 copper pads.
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for STM32L011D4P7 (ST, TSSOP-14) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | PB9 BOOT0 - | Digital_IO | Signal terminal PB9 BOOT0 - (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PB9 BOOT0 -. Supported peripheral buses: General. |
| 2 | PC14 - OSC32_IN | Digital_IO | Signal terminal PC14 - OSC32_IN (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: PC14 - OSC32_IN. Supported peripheral buses: RTC/CLK. |
| 3 | PC15 - OSC32_OUT | Digital_IO | Signal terminal PC15 - OSC32_OUT (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PC15 - OSC32_OUT. Supported peripheral buses: RTC/CLK. |
| 4 | NRST | Digital_IO | Active-low hardware reset terminal (NRST): pulling this pin Low resets the processor core and peripherals. |
| 5 | PA0CK IN -_ | Digital_IO | Signal terminal PA0CK IN -_ (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: PA0CK IN -_. Supported peripheral buses: UART, ADC, PWM, RTC/CLK. |
| 6 | PA1 | Digital_IO | Signal terminal PA1 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SMBA. Supported peripheral buses: UART, I2C, ADC, PWM. |
| 7 | PA4 | Digital_IO | Signal terminal PA4 (I/O, 3.3V VDD (Max 4.0V) domain). Multiplexed alternate functions: SPI1_NSS, I2C1_SCL. Supported peripheral buses: UART, SPI, I2C, ADC. |
| 8 | PA7 | Digital_IO | Signal terminal PA7 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: SPI1_MOSI. Supported peripheral buses: UART, SPI, ADC. |
| 9 | VSS | GND | 0V electrical ground return terminal (VSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 10 | VDD | Power_In | Primary positive power supply input (VDD) operating in the 3.3V VDD (Max 4.0V) domain (Max rating: 4.0V). |
| 11 | PA9 | Digital_IO | Signal terminal PA9 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SCL. Supported peripheral buses: UART, I2C, RTC/CLK. |
| 12 | PA10 | Digital_IO | Signal terminal PA10 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SDA. Supported peripheral buses: UART, I2C, PWM, RTC/CLK. |
| 13 | PA13 | Digital_IO | Signal terminal PA13 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SDA, SPI1_SCK. Supported peripheral buses: SPI, I2C, SWD/JTAG. |
| 14 | PA14 | Digital_IO | Signal terminal PA14 (I/O, 3.3V VDD (5V-Tolerant FT) domain). Multiplexed alternate functions: I2C1_SMBA, SPI1_MISO. Supported peripheral buses: UART, SPI, I2C, SWD/JTAG. |