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參數(shù)資料
| 型號(hào)： | W741L250 |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | 4-BIT MICROCONTROLLER |
| 中文描述： | 4-BIT, MROM, 1 MHz, MICROCONTROLLER, PQFP64 |
| 封裝： | 14 X 20 MM, QFP-64 |
| 文件頁(yè)數(shù)： | 17/86頁(yè) |
| 文件大小： | 478K |
| 代理商： | W741L250 |
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W741L250
Publication Release Date: March 1998
- 17 -
Revision A2
HCF.0 = 1 Hold mode was released by overflow from Divider 0.
HCF.1 = 1 Hold mode was released by underflow from Timer 0.
HCF.2 = 1 Hold mode was released by a signal change on port RC.
HCF.3 Reservsd
HCF.4 = 1 Hold mode was released by a falling edge signal on the
INT
pin.
HCF.5 = 1 Hold mode was released by underflow from Timer 1.
HCF.6 & HCF.7 are 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:
EVF
0
1
2
3
4
5
R
R
R
R
R
6
7
Note: R means read only.
EVF.0 = 1 Overflow from Divider 0 occurred.
EVF.1 = 1 Underflow from Timer 0 occurred.
EVF.2 = 1 Signal change on port RC occurred.
EVF.3 Reserved
EVF.4 = 1 Falling edge signal on the
INT
pin occurred.
EVF.5 & EVF.6 are 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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|---|---|
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| W742C810 | 制造商:WINBOND 制造商全稱(chēng):Winbond 功能描述:4-BIT MICROCONTROLLER |
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