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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
Sample & Buy
| Part Number | Package | Packing Type | Temperature (°C) | Marketing Status | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | Order from ST | Order from Distributors | |
|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||
| STM8AL31E88TAY | LQFP 48 7x7x1.4 | Tray | -40 | 85 | Active | 5A992C | MALAYSIA | 1.18 / 10k | Buy now | Check Availability |
| STM8AL31E88TCY | LQFP 48 7x7x1.4 | Tray | -40 | 125 | Active | 5A992C | MALAYSIA | 1.2626 / 10k | Buy now | Check Availability |
| STM8AL31E88TCX | LQFP 48 7x7x1.4 | Tape And Reel | -40 | 125 | Active | 5A992C | MALAYSIA | 1.2626 / 10k | Buy now | Check Availability |
(*) 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
Featured Videos
We asked Christophe the following questions: - How is ST engaged in the 8-bit MCU market ? - What benefits does the STM8 bring? - What applications are suitable for STM8 (no change) - What kind of ecosystem does STM8 have?
8-bit microcontrollers for industrial and mass-market applications
Here is an opportunity to get to learn the basics of our STM8S value line !
Development Tools
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Picture Part number Manufacturer Description CYCLONE P&E Microcomputer Systems Automated, Stand-Alone Production Programmer, Debug & Test. CYCLONE FX P&E Microcomputer Systems Automated, Stand-Alone Production Programmer, Debug & Test. 
FlashPro Elprotronic Flash programmer for STM8 and ARM based MCUs. 
GangPro Elprotronic Gang programmer for STM8 and ARM based MCUs. 
ST-LINK/V2 ST ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 
STLINK-V3SET ST STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8 Part NumberAutomated, Stand-Alone Production Programmer, Debug & Test.
Automated, Stand-Alone Production Programmer, Debug & Test.
Flash programmer for STM8 and ARM based MCUs.
Gang programmer for STM8 and ARM based MCUs.
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32
STLINK-V3 modular in-circuit debugger and programmer for STM32/STM8
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Picture Part number Manufacturer Description CXSTM8 Cosmic Software C Compiler and associated tools for the STM8 family FLASHER-STM8 ST STM8 Flash loader demonstrator (UM0462) IAR C-STAT IAR Systems Static analysis tool; add-on product to IAR Embedded Workbench IAR Embedded Workbench for STM8 IAR Systems Integrated Development Environment. IAR Embedded Workbench for STM8 - Functional Safety IAR Systems Integrated Development Environment. IAR Visual State IAR Systems State-machine modelling tool RIDE-STM8 Raisonance Raisonance branded integrated development environment for STM8 MCUs 
STM-STUDIO-STM8 ST STM Studio run-time variables monitoring and visualization tool for STM8 microcontrollers 
STM8CubeMX ST STM8Cube configuration and report tool STVD-STM8 ST ST Visual develop IDE for developing ST7 and STM8 applications STVP-LIB-STM8 ST STVP programming toolkit: C++ source files for creating PC programming interface STVP-STM8 ST ST Visual Programmer STM8 winIDEA-STM8 iSYSTEM iSYSTEM's complete software development and test solution for the STM8 MCUs Part NumberC Compiler and associated tools for the STM8 family
STM8 Flash loader demonstrator (UM0462)
Static analysis tool; add-on product to IAR Embedded Workbench
Integrated Development Environment.
Integrated Development Environment.
State-machine modelling tool
Raisonance branded integrated development environment for STM8 MCUs
STM Studio run-time variables monitoring and visualization tool for STM8 microcontrollers
STM8Cube configuration and report tool
ST Visual develop IDE for developing ST7 and STM8 applications
STVP programming toolkit: C++ source files for creating PC programming interface
ST Visual Programmer STM8
iSYSTEM's complete software development and test solution for the STM8 MCUs
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Embedded Software
Evaluation Tools
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Picture Part number Manufacturer Description 
STM8A-DISCOVERY ST Discovery kit with STM8AF5288 and STM8AL3L68 MCUs Part NumberDiscovery kit with STM8AF5288 and STM8AL3L68 MCUs
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Support and Applications
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM8AL31E88TAY | Active | LQFP 48 7x7x1.4 | Automotive | Ecopack2 | |
| STM8AL31E88TCX | Active | LQFP 48 7x7x1.4 | Automotive | Ecopack2 | |
| STM8AL31E88TCY | Active | LQFP 48 7x7x1.4 | 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.
