The medium-density STM8L151x4/6 and STM8L152x4/6 devices are members of the STM8L ultra-low-power 8-bit family. The medium-density STM8L15x family operates from 1.8 V to 3.6 V (down to 1.65 V at power down) and is available in the -40 to +85 °C and -40 to +125 °C temperature ranges.

The medium-density STM8L15x ultra-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 ultra-fast Flash programming.

All medium-density STM8L15x microcontrollers feature embedded data EEPROM and low-power, low-voltage, single-supply program Flash memory.

They incorporate an extensive range of enhanced I/Os and 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.

Six different packages are proposed from 28 to 48 pins. Depending on the device chosen, different sets of peripherals are included.

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

• Operating conditions
  • Operating power supply range 1.8 V to 3.6 V (down to 1.65 V at power down)
  • Temp. range: - 40 °C to 85, 105 or 125 °C
• Low power features
  • 5 low power modes: Wait, Low power run (5.1 µA), Low power wait (3 µA), Active-halt with full RTC (1.3 µA), Halt (350 nA)
  • Consumption: 195 µA/MHz + 440 µA
  • Ultra-low leakage per I/0: 50 nA
  • Fast wakeup from Halt: 4.7 µs
• Advanced STM8 core
  • Harvard architecture and 3-stage pipeline
  • Max freq. 16 MHz, 16 CISC MIPS peak
  • Up to 40 external interrupt sources
• Reset and supply management
  • Low power, ultra-safe BOR reset with 5 selectable thresholds
  • Ultra-low-power POR/PDR
  • Programmable voltage detector (PVD)
• Clock management
  • 1 to 16 MHz crystal oscillator
  • 32 kHz crystal oscillator
  • Internal 16 MHz factory-trimmed RC
  • Internal 38 kHz low consumption RC
  • Clock security system
• Low power RTC
  • BCD calendar with alarm interrupt
  • Auto-wakeup from Halt w/ periodic interrupt
• LCD: up to 4x28 segments w/ step-up converter
• Memories
  • Up to 32 Kbytes of Flash program memory and 1 Kbyte of data EEPROM with ECC, RWW
  • Flexible write and read protection modes
  • Up to 2 Kbytes of RAM
• DMA
  • 4 channels; supported peripherals: ADC, DAC, SPI, I2C, USART, timers
  • 1 channel for memory-to-memory
• 12-bit DAC with output buffer
• 12-bit ADC up to 1 Msps/25 channels
  • T. sensor and internal reference voltage
• 2 ultra-low-power comparators
  • 1 with fixed threshold and 1 rail to rail
  • Wakeup capability
• Timers
  • Two 16-bit timers with 2 channels (used as IC, OC, PWM), quadrature encoder
  • One 16-bit advanced control timer with 3 channels, supporting motor control
  • One 8-bit timer with 7-bit prescaler
  • 2 watchdogs: 1 window, 1 independent
  • Beeper timer with 1, 2 or 4 kHz frequencies
• Communication interfaces
  • Synchronous serial interface (SPI)
  • Fast I2C 400 kHz SMBus and PMBus™
  • USART (ISO 7816 interface and IrDA)
• Up to 41 I/Os, all mappable on interrupt vectors
• Up to 16 capacitive sensing channels supporting touchkey, proximity, linear touch and rotary touch sensors
• Development support
  • Fast on-chip programming and non intrusive debugging with SWIM
  • Bootloader using USART
• 96-bit unique ID