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  • STM8AF5268

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Automotive 8-bit MCU, with up to 128 Kbytes Flash, data EEPROM

Manufacturer : STMicroelectronics, Inc
Package/Case : LQFP48
Product Categories : MIC MCU
Datasheet: STM8AF5268 Datasheet (PDF)
RoHs Status: Lead free / RoHS Compliant
In-stock: 3000


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STM8AF5268 Product Details

The STM8AF526x/8x/Ax and STM8AF6269/8x/Ax automotive 8-bit microcontrollers described in this datasheet offer from 32 Kbyte to 128 Kbyte of non volatile memory and integrated true data EEPROM. They are referred to as high density STM8A devices in STM8S series and STM8AF series 8-bit microcontrollers reference manual (RM0016).

The STM8AF52 series features a CAN interface.
All devices of the STM8A product line provide the following benefits: reduced system cost, performance and robustness, short development cycles, and product longevity.
The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k write/erase cycles and a high system integration level with internal clock oscillators, wtachdog, and brown-out reset.
Device performance is ensured by 20 MIPS at 24 MHz CPU clock frequency and enhanced characteristics which include robust I/O, independent watchdogs (with a separate clock source), and a clock security system.
Short development cycles are guaranteed due to application scalability across a common family product architecture with compatible pinout, memory map, and modular peripherals. Full documentation is offered with a wide choice of development tools.
Product longevity is ensured in the STM8A family thanks to their advanced core which is made in a state-of-the art technology for automotive applications with 3.3 V to 5.5 V operating supply.
All STM8A and ST7 microcontrollers are supported by the same tools including STVD/STVP development environment, the STice emulator and a low-cost, third party in-circuit debugging tool.


  • Max fCPU: 24 MHz
  • Advanced STM8A core with Harvard architecture and 3-stage pipeline
  • Average 1.6 cycles/instruction resulting in 10 MIPS at 16 MHz fCPUfor industry standard benchmark
  • Memories
    • Program memory: 32 to 128 Kbyte Flash program; data retention 20 years at 55 °C
    • Data memory: up to 2 Kbyte true data EEPROM; endurance 300 kcycle
    • RAM: 6 Kbyte
  • Clock management
    • Low-power crystal resonator oscillator with external clock input
    • Internal, user-trimmable 16 MHz RC and low-power 128 kHz RC oscillators
    • Clock security system with clock monitor
  • Reset and supply management
    • Wait/auto-wakeup/Halt low-power modes with user definable clock gating
    • Low consumption power-on and power-down reset
  • Interrupt management
    • Nested interrupt controller with 32 vectors
    • Up to 37 external interrupts on 5 vectors
  • STM8AF5268 Block Diagram
    (Picture: Diagram)

    Technical Parameters

    • Operating Frequency (MHz)
    • 24
    • Flash Size (kB) (Prog)
    • 32
    • RAM Size (kB)
    • 6
    • Data E2PROM (B) nom
    • 1024
    • Timers (8 bit) typ
    • 1
    • Timers (16 bit) typ
    • 3
    • Other timer functions
    • AWU,Beeper,IWDG,WWDG
    • Number of A/D Converters (10 bit Channels)
    • 10
    • Number of A/D Converters (12 bit Channels)
    • -
    • D/A Converters (12 bit) typ
    • -
    • Comparator
    • -
    • I/Os (High Current)
    • 38
    • I2C typ
    • 1
    • SPI typ
    • 1
    • CAN typ
    • 1
    • USART typ
    • 1
    • UART typ
    • 1
    • LIN UART typ
    • 1
    • Crypto HASH
    • -
    • Supply Voltage (V) min
    • 3
    • Supply Voltage (V) max
    • 5.5
    • Supply Current (μA) (@ Lowest Power) typ
    • 5
    • Supply Current (μA) (Run mode (per Mhz)) typ
    • 500
    • Display controller
    • -
    • Operating Temperature (°C) min
    • -40
    • Operating Temperature (°C) max
    • 125,150,85
    • Touch sensing FW library
    • -

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