簡介:

STM8A 8位微控制器STM8AF擴大了微控制器在過程變化中的控制功能，嚴格執行AEC-Q100汽車產質量標準，實現零缺陷率的終極目標。現在新系列產品已完全通過測試，最高工作溫度達到 150°C，本次工藝變化不影響數據表的電特性和功能特性，客戶無需更改軟硬件設計。

基本特點：

意法半導體公司推出的STM8A是一款專門用于滿足汽車應用的特殊需求的8-位Flash微控制器。 這些模塊化產品提供了真數據EEPROM以及軟件和引腳兼容性，適用的程序存儲器尺寸范圍為8KB至256KB和20至128-引腳封裝。所有器件的工作電壓均為3V至5V，并且其工作溫度擴展到了145℃。

●集成式真數據EEPROM

    內部監控器電路：加電復位、窗式看門狗和標準看門狗定時器、電源掉電復位
    集成式、工廠預校16MHz和128kHz RC振蕩器
    注入式魯棒型I/O

●開發周期短

    產品線兼容性實現了應用可升級性
    高級開發工具
    Flash程序存儲器，可以輕松實現軟件開發和產品資格認證

●應用能力和魯棒性

    高效的STM8內核：在16MHz的頻率下可以實現10MIPS的性能
    應用安全性高：獨立的看門狗定時器、時鐘安全系統
    所有產品均具有LIN 2.0和自同步功能

●設計壽命

    新式內核和外設
    先進技術
    電源電壓：3.3V和5V
    最高工作溫度:145 ℃

方案特點：

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)

參考原理圖：





圖1： 系統硬件框圖





圖2   參考原理圖1



圖3    參考原理圖2

參考PCB圖：

 



圖4     參考PCB圖1  



                         圖5     參考pcb圖2

詳情請見：
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/USER_MANUAL/DM00064161.pdf