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Ultra-low-power 8-bit MCU with 2 Kbytes Flash, 16 MHz CPU, integrated EEPROM

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Product overview


The STM8L101x1 STM8L101x2 STM8L101x3 low-power family features the enhanced STM8 CPU core providing increased processing power (up to 16 MIPS at 16 MHz) while maintaining the advantages of a CISC architecture with improved code density, a 24-bit linear addressing space and an optimized architecture for low power operations.

The family includes an integrated debug module with a hardware interface (SWIM) which allows non-intrusive in-application debugging and ultrafast Flash programming.

All STM8L101xx microcontrollers feature low power low-voltage single-supply program Flash memory. The 8-Kbyte devices embed data EEPROM.

The STM8L101xx low power family is based on a generic set of state-of-the-art peripherals. The modular design of the peripheral set allows the same peripherals to be found in different ST microcontroller families including 32-bit families. This makes any transition to a different family very easy, and simplified even more by the use of a common set of development tools.

All STM8L low power products are based on the same architecture with the same memory mapping and a coherent pinout.

  • All features

    • Main microcontroller features
      • Supply voltage range 1.65 V to 3.6 V
      • Low power consumption (Halt: 0.3 µA, Active-halt: 0.8 µA, Dynamic Run: 150 µA/MHz)
      • STM8 Core with up to 16 CISC MIPS throughput
      • Temp. range: -40 to 85 °C and 125 °C
    • Memories
      • Up to 8 Kbytes of Flash program including up to 2 Kbytes of data EEPROM
      • Error correction code (ECC)
      • Flexible write and read protection modes
      • In-application and in-circuit programming
      • Data EEPROM capability
      • 1.5 Kbytes of static RAM
    • Clock management
      • Internal 16 MHz RC with fast wakeup time (typ. 4 µs)
      • Internal low consumption 38 kHz RC driving both the IWDG and the AWU
    • Reset and supply management
      • Ultra-low power POR/PDR
      • Three low-power modes: Wait, Active-halt, Halt
    • Interrupt management
      • Nested interrupt controller with software priority control
      • Up to 29 external interrupt sources
    • I/Os
      • Up to 30 I/Os, all mappable on external interrupt vectors
      • I/Os with programmable input pull-ups, high sink/source capability and one LED driver infrared output
    • Peripherals
      • Two 16-bit general purpose timers (TIM2 and TIM3) with up and down counter and 2 channels (used as IC, OC, PWM)
      • One 8-bit timer (TIM4) with 7-bit prescaler
      • Infrared remote control (IR)
      • Independent watchdog
      • Auto-wakeup unit
      • Beeper timer with 1, 2 or 4 kHz frequencies
      • SPI synchronous serial interface
      • Fast I2C Multimaster/slave 400 kHz
      • USART with fractional baud rate generator
      • 2 comparators with 4 inputs each
    • Development support
      • Hardware single wire interface module (SWIM) for fast on-chip programming and non intrusive debugging
      • In-circuit emulation (ICE)
    • 96-bit unique ID

Circuit Diagram

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STMicroelectronics - STM8L101F1

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
UFQFPN 20 3x3x0.6 mm Industrial Ecopack2



UFQFPN 20 3x3x0.6 mm

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UFQFPN 20 3x3x0.6 mm



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(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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