简介:

STM8A 8位微控制器STM8AF扩大了微控制器在过程变化中的控制功能，严格执行AEC-Q100汽车产质量标准，实现零缺陷率的终极目标。现在新系列产品已完全通过测试，最高工作温度达到 150°C，本次工艺变化不影响数据表的电特性和功能特性，客户无需更改软硬件设计。

基本特点：

意法半导体公司推出的STM8A是一款专门用于满足汽车应用的特殊需求的8-位Flash微控制器。 这些模块化产品提供了真数据EEPROM以及软件和引脚兼容性，适用的程序存储器尺寸范围为8KB至256KB和20至128-引脚封装。所有器件的工作电压均为3V至5V，并且其工作温度扩展到了145℃。

●集成式真数据EEPROM

    内部监控器电路：加电复位、窗式看门狗和标准看门狗定时器、电源掉电复位
    集成式、工厂预校16MHz和128kHz RC振荡器
    注入式鲁棒型I/O

●开发周期短

    产品线兼容性实现了应用可升级性
    高级开发工具
    Flash程序存储器，可以轻松实现软件开发和产品资格认证

●应用能力和鲁棒性

    高效的STM8内核：在16MHz的频率下可以实现10MIPS的性能
    应用安全性高：独立的看门狗定时器、时钟安全系统
    所有产品均具有LIN 2.0和自同步功能

●设计寿命

    新式内核和外设
    先进技术
    电源电压：3.3V和5V
    最高工作温度:145 ℃

方案特点：

The STM8A-DISCOVERY helps you discover the STM8AF and STM8AL automotive microcontroller family features and develop your applications through two dedicatedapplication boards that can be connected together via a LIN network.

The STM8AF board can perform both CAN and LIN communications with the MCU powered at 5 V and is ready to be connected into a network with its integrated transceiver.

The STM8AL board manages LIN slave communication through its transceiver and uses a 4-digit alphanumeric LCD display with the MCU powered at 3.3 V, offering low energy power modes.

Both STM8AF and STM8AL boards include push buttons, LEDs, external connectors and allow various configurations to take advantage of the numerous capabilities of the microcontrollers.

On-board ST-LINK/V2 included for debugging and programming

● Board power supply: through 5 V USB bus

● Internal dual ST662A step-up converter building the 12 Vdc when powered by USB port

● External application power supply VBAT (up to 14 Vdc)

● 16 MHz HSE XTAL crystal oscillator

● L99PM62GXP power management IC with LIN and high speed CAN with SPI control interface and high-side drivers

● Two push buttons (USER1 and USER2)

● Extension header for L99PM62GXP including relays, high-side outputs and wake-up capabilities

STM8AF dedicated board features:

● STM8AF5288T microcontroller featuring 64 Kbytes Flash, 2 Kbytes data EEPROM,

LIN, CAN in an 48-pin package

● Seven LEDs:

– LD1 (red/green) for USB communication

– LD2 (red) for 5 V power ON

– Five user LEDs LD3 (red) and LD4 to LD7 (green)

● RV1 potentiometer connected to the ADC peripheral

● Extension headers for MCU connectivity (full Port B, free ports pins, RESET)

STM8AL dedicated board features:

● STM8AL3L68T microcontroller featuring 32 Kbytes Flash, 1 Kbytes data EEPROM,

LCD in an 48-pin package

● Four LEDs:

– LD1 (red/green) for USB communication

– LD2 (red) for 3.3 V power ON

– 2 user LEDs LD3 (red) and LD4 (green)

● 4-digit alphanumeric LCD display including 4 bars display

● Extension header for MCU connectivity (free ports pins, RESET)

参考原理图：





图1： 系统硬件框图





图2   参考原理图1



图3    参考原理图2

参考PCB图：

 



图4     参考PCB图1  



                         图5     参考pcb图2

详情请见：
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00064161.pdf