参数资料
型号: MC68HC05C12ACB
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP42
封装: SHRINK, PLASTIC, DIP-42
文件页数: 150/156页
文件大小: 756K
代理商: MC68HC05C12ACB
Operating Modes
Self-Check Mode
MC68HC05C12A Rev. 3.0
General Release Specification
MOTOROLA
Operating Modes
93
NON-DISCLOSURE
AGREEMENT
REQUIRED
5. ROM — Exclusive OR with odd ones parity result
6. SPI — Transmission test checks for SPIF and WCOL flags
The self-check circuit is shown in Figure 11-2.
11.4.2 Self-Check Results
Table 11-2 shows the LED codes that indicate self-check test results.
Perform the following steps to activate the self-check tests:
1. Apply 10 V (2 x V
DD) to the IRQ pin.
2. Apply a logic 1 to the TCAP pin.
3. Apply a logic 0 to the RESET pin.
The self-check tests begin on the rising edge of the RESET pin.
RESET must be held low for 4064 cycles after power-on reset (POR) or
for a time, t
RL, for any other reset. (For the tRL value, see 13.9 5.0 V
Table 11-2. Self-Check Circuit LED Codes
PC3
PC2
PC1
PC0
Remarks
Off
On
Off
I/O Failure
Off
On
Off
On
RAM Failure
Off
On
Off
Timer Failure
Off
On
SCI Failure
Off
On
Off
ROM Failure
Off
On
SPI Failure
Flashing
No Failure
All Others
Device Failure
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