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參數資料
型號: W741C240
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-BIT Microcontroller(多次可編程4位的微控制器)
中文描述: 4-BIT, MROM, MICROCONTROLLER, PQFP64
封裝: QFP-64
文件頁數: 15/40頁
文件大小: 432K
代理商: W741C240
W741C240
Publication Release Date: May 1999
- 15 -
Revision A1
HCF.0 = 1 Hold mode was released by overflow from Divider 0.
HCF.1 Reservsd
HCF.2 = 1 Hold mode was released by a signal change on port RC.
HCF.3, 4 Reserved.
HCF.5 = 1 Hold mode was released by underflow from Timer 1.
HCF.6, 7 Reserved.
Event Flag (EVF)
The event flag is organized as a 8-bit binary register (EVF0 to EVF7). It is set by hardware and reset
by the CLR EVF, #I instruction or the occurrence of an interrupt. The bit descriptions are as follows:
0
1
2
EVF
w
w
w
3
4
5
6
7
Note: R means read only.
EVF.0 = 1 Overflow from Divider 0 occurred.
EVF.1 Reserved
EVF.2 = 1 Signal change on port RC occurred.
EVF.3, 4 Reserved
EVF.5, 6 Reserved
EVF.7 = 1 Underflow from Timer 1 occurred.
Parameter Flag (PMF)
The parameter flag is organized as a 4-bit binary register (PMF.0 to PMF.3). The PMF is controlled
by the SET PMF, #I or CLR PMF, #I instruction. The bit descriptions are as follows:
W
0
1
2
3
PMF
Note: W means write only.
Bit 0, Bit1, Bit2
Bit 3 = 0 The fundamental frequency of the watchdog timer is F
OSC
/1024.
= 1 The fundamental frequency of the watchdog timer is F
OSC
/16384.
Reserved
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