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參數資料
型號: W741E204
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 4-BIT FLASH MICROCONTROLLER
中文描述: 4-BIT, FLASH, 4.19 MHz, MICROCONTROLLER, PDSO20
封裝: 0.300 INCH, SOP-20
文件頁數: 22/84頁
文件大小: 541K
代理商: W741E204
Preliminary W741E20X
- 22 -
Bit 0 is reserved.
Bit 1 (BUSYI):
Serial port input busy flag.
Bit 2 is reserved.
Bit 3 (BUSYO):
Serial port output busy flag.
MFP Output Pin (MFP)
The MFP output pin can output the Timer 1 clock or the modulation frequency; the output of the pin is
determined by mode register 1 (MR1). The organization of MR1 is shown in Figure 6. When bit 2 of
MR1 is reset to "0," the MFP output can deliver a modulation output in any combination of one signal
from among DC, 4096Hz, 2048Hz, and one or more signals from among 128 Hz, 64 Hz, 8 Hz, 4 Hz, 2
Hz, or 1 Hz (when using a 32.768 KHz crystal). The MOV MFP, #I instruction is used to specify the
modulation output combination. The data specified by the 8-bit operand and the MFP output pin are
shown as below.
(Fosc = 32.768 KHz)
R7 R6
R5
R4
R3
R2
R1
R0
FUNCTION
0
0
0
0
0
0
Low level
0
0
0
0
0
1
128 Hz
0
0
0
0
1
0
64 Hz
0 0
0
0
0
1
0
0
8 Hz
0
0
1
0
0
0
4 Hz
0
1
0
0
0
0
2 Hz
1
0
0
0
0
0
1 Hz
0
0
0
0
0
0
High level
0
0
0
0
0
1
128 Hz
0
0
0
0
1
0
64 Hz
0 1
0
0
0
1
0
0
8 Hz
0
0
1
0
0
0
4 Hz
0
1
0
0
0
0
2 Hz
1
0
0
0
0
0
1 Hz
0
0
0
0
0
0
2048 Hz
0
0
0
0
0
1
2048 Hz * 128 Hz
0
0
0
0
1
0
2048 Hz * 64 Hz
1 0
0
0
0
1
0
0
2048 Hz * 8 Hz
0
0
1
0
0
0
2048 Hz * 4 Hz
0
1
0
0
0
0
2048 Hz * 2 Hz
1
0
0
0
0
0
2048 Hz * 1 Hz
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