參數(shù)資料
型號: MC68HC05C9ECFB
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, PQFP44
封裝: QFP-44
文件頁數(shù): 44/144頁
文件大?。?/td> 1628K
代理商: MC68HC05C9ECFB
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Self-Check Mode
Advance Information
MC68HC05C9E
138
Self-Check Mode
MOTOROLA
A.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.
A.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 A-1.
相關PDF資料
PDF描述
MC68HC05C9EP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
MC68HC05C9ECP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
MC68HC05C9FB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP44
MC68HC05C9CB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
MC68HC05C9FN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
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