参数资料
型号: MC68HC11C0MFN2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 43/76页
文件大小: 394K
代理商: MC68HC11C0MFN2
MC68HC11C0
MOTOROLA
MC68HC11C0TS/D
48
CME — Clock Monitor Enable
0 = Clock monitor disabled; slow clocks can be used
1 = Slow or stopped clocks cause clock failure reset
Bit 2 — Not implemented
Always reads zero
CR[1:0] — COP Timer Rate Select
Refer to the following table of COP timer rates.
Write $55 to COPRST to arm COP watchdog clearing mechanism. Write $AA (%10101010) to CO-
PRST to reset COP watchdog.
Table 10 COP Timer Rate Select
CR[1:0]
Divide E/
215 By
XTAL = 4.0 MHz
Time-Out
–0 ms, +32.8 ms
XTAL = 8.0 MHz
Time-Out
–0 ms, +16.4 ms
XTAL = 12.0 MHz
Time-Out
–0 ms, +10.9 ms
0 0
1
32.768 ms
16.384 ms
10.923 ms
0 1
4
131.072 ms
65.536 ms
43.691 ms
1 0
16
524.288 ms
262.140 ms
174.76 ms
1 1
64
2.097 s
1.049 s
699.05 ms
E =
1.0 MHz
2.0 MHz
3.0 MHz
COPRST — Arm/Reset COP Timer Circuitry
$003A
Bit 7
654321
Bit 0
76543210
RESET:
00000000
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