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STM8AL3L68：Automotive 8-bit ultra-low-power MCU with 32 Kbytes Flash, LIN, RTC, LCD, data EEPROM, timers, USARTs, I2C, SPIs, ADC, DAC, COMPs

The medium-density STM8AL313x/4x/6x and STM8AL3L4x/6x devices are members of the STM8AL automotive ultra-low-power 8-bit family. The medium-density STM8AL3xxx 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 STM8AL3xxx 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 ultrafast Flash programming.

All medium-density STM8AL3xxx 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.

Two different packages are proposed which include 32 and 48 pins. Depending on the device chosen, different sets of peripherals are included.

All STM8AL3xxx ultra-low-power products are based on the same architecture with the same memory mapping and a coherent pinout.

Key Features

• AEC-Q100 grade 1 conform qualification
• Operating conditions
  • Operating power supply range 1.8 V to 3.6 V (down to 1.65 V at power down)
  • Temperature range: - 40 °C to 85 or 125 °C
• Low power features
  • Five low-power modes: Wait, low-power run (5.1 μA), low-power wait (3 μA), active-halt with full RTC (1.3 μA), halt with PDR (400 nA)
  • Run from Flash: 195 μA/MHz + 440 μA
  • Run from RAM: 90 μA/MHz + 400 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 (0.95 ppm resolution) w/ periodic interrupt
• LCD: up to 4x28 segments w/ step-up converter
• Memories
  • Program memory: up to 32 Kbyte Flash program; data retention 20 years at 55 °C
  • Data memory: up to 1 Kbyte true data EEPROM; endurance 300 kcycle
  • RAM: up to 2 Kbyte
• DMA
  • Four channels; supported peripherals: ADC, DAC, SPI, I2C, USART, timers
  • One channel for memory-to-memory
• 12-bit DAC with output buffer
• 12-bit ADC up to 1 Mbps/25 channels
  • Temp sensor and internal reference voltage
• Two ultra-low-power comparators
  • One with fixed threshold and one rail to rail
  • Wakeup capability
• Timers
  • Two 16-bit timers with two channels (used as IC, OC, PWM), quadrature encoder
  • One 16-bit advanced control timer with three channels, supporting motor control
  • One 8-bit timer with 7-bit prescaler
  • Two watchdogs: one window, one 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, IrDA, LIN 1.3, LIN 2.0)
• Up to 41 I/Os, all mappable on interrupt vectors
• Development support
  • Fast on-chip programming and non intrusive debugging with SWIM
  • Bootloader using USART
• 96-bit unique ID

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