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參數資料
型號: W741C250
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, 4.19 MHz, MICROCONTROLLER, PQFP64
封裝: 14 X 20 MM, QFP-64
文件頁數: 21/88頁
文件大小: 496K
代理商: W741C250
W741C250
Publication Release Date: March 1998
- 21 -
Revision A4
Bit 0 = 1 Signal change on RC.0.
Bit 1 = 1 Signal change on RC.1.
Bit 2 = 1 Signal change on RC.2.
Bit 3 = 1 Signal change on RC.3.
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, 4096 Hz, 2048 Hz, 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 system clock). 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:
(F
OSC
= 32.768 KHz)
R7 R6
R5
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
R4
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
R3
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
R2
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
R1
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
R0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
0
1
0
0
0
0
0
FUNCTION
Low level
128 Hz
64 Hz
8 Hz
4 Hz
2 Hz
1 Hz
High level
128 Hz
64 Hz
8 Hz
4 Hz
2 Hz
1 Hz
2048 Hz
2048 Hz * 128 Hz
2048 Hz * 64 Hz
2048 Hz * 8 Hz
2048 Hz * 4 Hz
2048 Hz * 2 Hz
2048 Hz * 1 Hz
0 0
0 1
1 0
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