STMicroelectronics STM8L EnergyLite series, STM8L151F3U6TR, 8-bit MCU, 16 MHz, 8KB (8K x 8) FLASH, 1K x 8 RAM, 256 x 8 EEPROM, 1.8V ~ 3.6V, -40°C ~ 85°C, 20-UFQFPN (3x3).
| Parameter | Value |
|---|---|
| Series | STM8L EnergyLite |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 16MHz |
| Package | Tape & Reel (TR) Cut Tape (CT) |
| RAM size | 1K x 8 |
| Core size | 8-Bit |
| EEPROM size | 256 x 8 |
| Peripherals | Brown-out Detect/Reset, DMA, IR, POR, PWM, WDT |
| Connectivity | I²C, IrDA, SPI, UART/USART |
| Number of i (O) | 18 |
| Core processor | STM8 |
| Case | 20-UFQFN |
| Data converters | A/D 10x12b |
| Program memory size | 8KB (8K x 8) |
It packs 8 KB of Flash program memory, 1 KB of SRAM, and 256 bytes of EEPROM in a 20-pin UFQFPN package measuring 3x3 mm. This is a part sized for compact, cost-sensitive designs where every milligram of board area and every cent of the BOM matters — think sensor nodes, handheld tools, or secondary control loops in a larger assembly.
The ROHS3 compliance is current.
The STM32L151CBU6A is a different architecture (32-bit ARM Cortex-M3, 32 MHz) with more memory and I/O — it is not a pin-compatible drop-in. For a direct functional equivalent within the STM8L family, look at the STM8L151C6 (more Flash and RAM) but verify the package and pinout match your layout.
The STM8L151F3U6TR supports SWIM (Single Wire Interface Module) for in-circuit programming and debugging. A standard ST-Link/V2 programmer connects to the SWIM pin and ground.