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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: 3/88頁
文件大小: 496K
代理商: W741C250
W741C250
Publication Release Date: March 1998
- 3 -
Revision A4
MFP output pin
Output is software selectable as modulating or nonmodulating frequency
Works as frequency output specified by Timer 1
Built-in 14-bit clock frequency divider circuit
Two built-in 8-bit programmable countdown timers
Timer 0: One of two internal clock frequencies (FOSC/4 or FOSC/1024) can be selected
Timer 1: Offers auto-reload function and one of two internal clock frequencies (FOSC or
FOSC/64) can be selected or falling edge of pin RC.0 can be selected (output through MFP pin)
Built-in 18/14-bit watchdog timer selectable for system reset
Powerful instruction set: 116 instructions
8-level subroutine (include interrupt) nesting
Up to 1
μ
S instruction cycle (with 4 MHz operating frequency)
Packaged in 64-pin QFP
PIN CONFIGURATION
51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16 17 18 19
20
21
22
23
24
25
26
27
28
29
30
31
32
52
53
54
55
56
57
58
59
60
61
62
63
64
RD1
RD0
RC3
RC2
RC1
RC0
RB3
RB1
RB2
M
F
P
/
I
N
T
/
R
E
S
X
I
N
O
U
T
V
D N N
D C C
D
H
1
D
H
2
V
D
D
3
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
SEG8
SEG7
SEG6
R
E
2
R
E
3
V
S
S
N
C
N
C
C
O
M
3
C
O
M
2
C
O
M
1
C
O
M
0
S
E
G
0
S
E
G
1
S
E
G
2
S
E
G
3
S
E
G
4
S
E
G
5
R
D
2
D
3
E E
0
R R
R
1
S S S
E E
G G
2
2
E
G
1
E
G
2
2
1
0
9
RB0
RA3
RA2
RA1
S
S
E
G
2
3
V
D
D
2
V
D
D
1
X
R
A
0
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