参数资料
型号: MC68HC05C9AB
厂商: FREESCALE SEMICONDUCTOR 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: 105/160页
文件大小: 4128K
代理商: MC68HC05C9AB
Resets
Computer Operating Properly (COP) Reset
MC68HC05C9A Rev. 4.0
General Release Specification
Resets
NON-DISCLOSURE
AGREEMENT
REQUIRED
COPE — COP Enable
This bit is readable any time. COPE, CM1, and CM0 together may be
written with a single write, only once, after reset. This bit is cleared by
reset.
1 = COP enabled
0 = COP disabled
CM1 — COP Mode Bit 1
Used in conjunction with CM0 to establish the COP timeout period,
this bit is readable any time. COPE, CM1, and CM0 together may be
written with a single write, only once, after reset. This bit is cleared by
reset. See Table 5-1 for timeout period options.
CM0 — COP Mode Bit 0
Used in conjunction with CM1 to establish the COP timeout period,
this bit is readable any time. COPE, CM1, and CM0 together may be
written with a single write, only once, after reset. This bit is cleared by
reset. See Table 5-1 for timeout period options.
Bits 7–5 — Not Used
These bits always read as zero.
Table 5-1. COP Timeout Period
CM1
CM0
fop/2
15 Divide By
Timeout Period
(fosc = 2.0 MHz)
Timeout Period
(fosc = 4.0 MHz)
0
1
32.77 ms
16.38 ms
0
1
4
131.07 ms
65.54 ms
1
0
16
524.29 ms
262.14 ms
1
64
2.097 sec
1.048 sec
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For More Information On This Product,
Go to: www.freescale.com
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