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The high-density STM8AL3xE8x ultra-low-power devices feature an 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 high-density STM8AL3xE8x microcontrollers feature embedded data EEPROM and low-power low-voltage single-supply program Flash memory.
The devices incorporate an extensive range of enhanced I/Os and peripherals, a 12-bit ADC, two DACs, two comparators, a real-time clock, AES, 8x40 or 4x44-segment LCD, four 16-bit timers, one 8-bit timer, as well as standard communication interfaces such as two SPIs, an I2C interface, and three USARTs. One 8x40 or 4x44-segment LCD is available on the STM8AL3LE8x devices. 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.Key Features
- AEC-Q100 grade 1 qualified
- Operating conditions
- Operating power supply range 1.8 V to 3.6 V (down to 1.65 V at power down)
- Temp. range: -40 to 85 or 125 °C
- Low-power features
- 5 low-power modes: Wait, Low-power run (5.9 μA), Low-power wait (3 μA), Active-halt with full RTC (1.4 μA), Halt (400 nA)
- Consumption: 200 μA/MHz+330 μA
- Fast wake up from Halt mode (4.7 μs)
- Ultra-low leakage per I/0: 50 nA
- 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 programmable thresholds
- Ultra-low-power POR/PDR
- Programmable voltage detector (PVD)
- Clock management
- 32 kHz and 1-16 MHz crystal oscillators
- Internal 16 MHz factory-trimmed RC and 38 kHz low consumption RC
- Clock security system
- Low-power RTC
- BCD calendar with alarm interrupt,
- Digital calibration with +/- 0.5ppm accuracy
- Advanced anti-tamper detection
- DMA
- 4 ch. for ADC, encryption hardware accelerator (AES), DACs, SPIs, I2C, USARTs, Timers, 1 ch. for memory-to-memory
- LCD: 8x40 or 4x44 w/ step-up converter
- 12-bit ADC up to 1 Msps / 28 channels,
- Temp. sensor and internal ref. voltage
- Memories
- Up to 64 Kbytes of Flash with up to 2 Kbytes of data EEPROM with ECC and RWW
- Flexible write/read protection modes
- Up to 4 Kbytes of RAM
- 2x12-bit DAC (dual mode) with output buffer
- 2 ultra-low-power comparators
- 1 with fixed threshold and 1 rail to rail
- Wakeup capability
- Timers
- Three 16-bit timers with 2 channels (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
- One window and one independent watchdog
- Beeper timer with 1, 2 or 4 kHz frequencies
- Communication interfaces
- Two synchronous serial interface (SPI)
- Fast I2C 400 kHz SMBus and PMBus
- Three USARTs (IrDA, LIN 1.3, LIN2.0)
- Up to 67 I/Os, all mappable on interrupt vectors
- Fast on-chip programming and non-intrusive debugging with SWIM, Bootloader using USART
- 96-bit unique ID
Circuit Diagram

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Quality and Reliability
Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
---|---|---|---|---|---|
STM8AL31E88TAY |
Active
|
LQFP 48 7x7x1.4 mm | Automotive | Ecopack2 | |
STM8AL31E88TCX |
Active
|
LQFP 48 7x7x1.4 mm | Automotive | Ecopack2 | |
STM8AL31E88TCY |
Active
|
LQFP 48 7x7x1.4 mm | Automotive | Ecopack2 |
(**) The Material Declaration forms available on st.com 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.
Sample & Buy
Part Number | Order from Distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
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min | max | |||||||||||
STM8AL31E88TAY | 1 distributors | Buy Direct |
Active
|
5A992C | 5A002A4 | Tray | LQFP 48 7x7x1.4 mm | -40 | 85 | MALAYSIA | 1.18 / 10k | |
STM8AL31E88TCY | 2 distributors | Buy Direct |
Active
|
5A992C | 5A002A4 | Tray | LQFP 48 7x7x1.4 mm | -40 | 125 | MALAYSIA | 1.2626 / 10k | |
STM8AL31E88TCX | No availability of distributors reported, please contact our sales office | Buy Direct |
Active
|
5A992C | 5A002A4 | Tape And Reel | LQFP 48 7x7x1.4 mm | -40 | 125 | MALAYSIA | 1.2626 / 10k |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors