# STM8L152C8U6

**STMicroelectronics** · Microcontrollers (MCU/MPU/SOC) · UFQFPN-48(7x7)

STM8L152C8U6 from STMicroelectronics, in a UFQFPN-48(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 | General purpose I/O, five-volt tolerant with high-sink LED driver capability; alternate functions: USART1 synchronous clock, SWIM interface, beeper output, infrared timer output. |
| 2 | NRST/PA1 | input | Reset input with internal pull-up (30-60 kΩ); can be configured as output PA1 (push-pull only) after reset. |
| 3 | PA2 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: HSE oscillator input, USART1 transmit, SPI1 MISO. |
| 4 | PA3 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: HSE oscillator output, USART1 receive, SPI1 MOSI. |
| 5 | PA4 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 2 break/trigger, LCD COM 0, ADC1 input 2, Comparator 1 positive input. |
| 6 | PA5 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 3 break/trigger, LCD COM 1, ADC1 input 1, Comparator 1 positive input. |
| 7 | PA6 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: ADC1 trigger, LCD COM 2, ADC1 input 0, Comparator 1 positive input. |
| 8 | PA7 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 0, Timer 5 channel 1 output. |
| 9 | VSS/VSSA/VREF- | power_in | I/O ground, analog ground, and ADC1 negative voltage reference. |
| 10 | VDD1 | power_in | Digital power supply for I/Os, operating range 1.65 to 3.6 V. |
| 11 | VDDA | power_in | Analog power supply for ADC1 and comparators, operating range 1.65 to 3.6 V (minimum 1.8 V when ADC1 is used). |
| 12 | VREF+ | power_in | ADC1 and DAC1/2 positive voltage reference, operating range 1.65 to 3.6 V. |
| 13 | VLCD | power_in | External capacitor connection for LCD step-up converter (STM8L152 devices only). |
| 14 | PE0 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 1, Timer 5 channel 2 output. |
| 15 | PE1 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 inverted channel 2, LCD segment 2. |
| 16 | PE2 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 inverted channel 3, LCD segment 3, configurable clock output. |
| 17 | PE3 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 4, USART2 receive. |
| 18 | PE4 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 5, DAC 2 trigger, USART2 transmit. |
| 19 | PE5 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 6, ADC1 input 23, Comparators 1/2 positive inputs, USART2 synchronous clock. |
| 20 | PD0 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 3 channel 2, ADC1 trigger, LCD segment 7, ADC1 input 22, Comparator 2 positive input. |
| 21 | PD1 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 3 trigger, LCD COM 3, ADC1 input 21, Comparators 1/2 positive inputs. |
| 22 | PD2 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 channel 1, LCD segment 8, ADC1 input 20, Comparator 1 positive input. |
| 23 | PD3 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 trigger, LCD segment 9, ADC1 input 19, Comparator 1 positive input. |
| 24 | PB0 | bidirectional | General purpose I/O, five-volt tolerant with pull-up during reset; alternate functions: Timer 2 channel 1, LCD segment 10, ADC1 input 18, Comparator 1 positive input. |
| 25 | PB1 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 3 channel 1, LCD segment 11, ADC1 input 17, Comparator 1 positive input. |
| 26 | PB2 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 2 channel 2, LCD segment 12, ADC1 input 16, Comparator 1 positive input. |
| 27 | PB3 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 2 trigger, LCD segment 13, ADC1 input 15, Comparator 1 positive input. |
| 28 | PB4 | bidirectional | General purpose I/O, five-volt tolerant with pull-up during reset; alternate functions: SPI1 master/slave select, LCD segment 14, ADC1 input 14, DAC 2 output, Comparator 1 positive input. |
| 29 | PB5 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: SPI1 clock, LCD segment 15, ADC1 input 13, DAC 2 output, Comparator 1 positive input. |
| 30 | PB6 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: SPI1 master-out/slave-in, LCD segment 16, ADC1 input 12, DAC 2 output, Comparator 1 positive input. |
| 31 | PB7 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: SPI1 master-in/slave-out, LCD segment 17, ADC1 input 11, Comparator 1 positive input. |
| 32 | PF0 | bidirectional | General purpose I/O (not five-volt tolerant); alternate functions: ADC1 input 24, DAC 1 output. |
| 33 | PD4 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 channel 2, LCD segment 18, ADC1 input 10, SPI2 MISO, Comparator 1 positive input. |
| 34 | PD5 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 channel 3, LCD segment 19, ADC1 input 9, SPI2 MOSI, Comparator 1 positive input. |
| 35 | PD6 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 break input, LCD segment 20, ADC1 input 8, RTC calibration, SPI2 clock, Comparator 1 positive input, internal reference voltage output. |
| 36 | PD7 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: Timer 1 inverted channel 1, LCD segment 21, ADC1 input 7, RTC alarm output, SPI2 master/slave select, Comparator 1 positive input, internal reference voltage output. |
| 37 | PC0 | bidirectional | General purpose I/O, five-volt tolerant, true open-drain output; primary function: I2C1 data line (SDA). |
| 38 | PC1 | bidirectional | General purpose I/O, five-volt tolerant, true open-drain output; primary function: I2C1 clock line (SCL). |
| 39 | VDD2 | power_in | I/O power supply, operating range 1.65 to 3.6 V. |
| 40 | VSS2 | power_in | I/O ground. |
| 41 | PC2 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: USART1 receive, LCD segment 22, ADC1 input 6, Comparator 1 positive input, internal reference voltage output. |
| 42 | PC3 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: USART1 transmit, LCD segment 23, ADC1 input 5. |
| 43 | PC4 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: USART1 synchronous clock, I2C1 SMBus, configurable clock output, LCD segment 24/COM 4, ADC1 input 4, Comparators 1/2 inputs. |
| 44 | PC5 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LSE oscillator input, SPI1 master/slave select, USART1 transmit. |
| 45 | PC6 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LSE oscillator output, SPI1 clock, USART1 receive. |
| 46 | PC7 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 25/COM 5, ADC1 input 3, USART3 synchronous clock, Comparators 1/2 inputs. |
| 47 | PE6 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 26/COM 6, PVD input, Timer 5 break input, USART3 transmit. |
| 48 | PE7 | bidirectional | General purpose I/O, five-volt tolerant; alternate functions: LCD segment 27/COM 7, Timer 5 trigger, USART3 receive. |
| 49 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | UFQFPN-48(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 49 |

## CAD (KiCad official)

- Symbol: `STM8L152C8U6`
- Footprint: `Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm`
- 3D model: UFQFPN-48(7x7) (KiCad packages3D, STEP)
- 3D model files: `stm8l152c8u6-etched.step` / `stm8l152c8u6-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `stm8l152c8u6.step` / `stm8l152c8u6.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [STMicroelectronics datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588923480922869760) (147 pp, sha256 `193f2133f3d81d2b`, retrieved 2026-10-05, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-4-5-20251001` (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](docs/stm8l152c8u6-datasheet.pdf)