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  • 參數(shù)資料
    型號: MC68HCL05C9AFN
    廠商: MOTOROLA INC
    元件分類: 微控制器/微處理器
    英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
    封裝: PLASTIC, LCC-44
    文件頁數(shù): 64/162頁
    文件大?。?/td> 1093K
    代理商: MC68HCL05C9AFN
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    Self-Check Mode
    Advance Information
    MC68HC05C9A Rev. 5.0
    156
    Self-Check Mode
    MOTOROLA
    C.3 Self-Check Mode
    Self-check mode is entered upon the rising edge of RESET if the IRQ pin
    is at Vtst and the TCAP pin is at logic 1.
    C.3.1 Self-Check Tests
    The self-check read-only memory (ROM) at mask ROM location
    $3F00–$3FEF determines if the microcontroller unit (MCU) is
    functioning properly.
    These tests are performed:
    1. Input/output (I/O) — Functional test of ports A, B, and C
    2. Random-access memory (RAM) — Counter test for each RAM
    byte
    3. Timer — Test of counter register and OCF bit
    4. Serial communications interface (SCI) — Transmission test;
    checks for RDRF, TDRE, TC, and FE flags
    5. ROM — Exclusive OR with odd ones parity result
    6. Serial peripheral interface (SPI) — Transmission test; checks for
    SPIF and WCOL flags
    The self-check circuit is shown in Figure C-1.
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