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參數資料
型號: W74110
廠商: WINBOND ELECTRONICS CORP
英文描述: 4-BIT Microcontroller(多次可編程4位的微控制器)
中文描述: 4位微控制器(多次可編程4位的微控制器)
文件頁數: 3/5頁
文件大小: 35K
代理商: W74110
W74110
Publication Release Date: April 1997
- 3 -
Revision A1
Pin description, continued
PIN NO.
SYMBOL
I/O
FUNCTION
20
TEST5
O
Test pin
21
TEST6
O
Test pin
22
TEST3
O
Test pin
23
24
TEST4
MFP
O
Test pin
Output pin only.
This pin outputs software selectable modulating and
nonmodulating signals according to the MFP instruction.
Special output port.
This port can be configured by software to act as the output
of internal port RT or the inverse output of external port RC.
O
25-28
RE0/DATA
RE1/CLK
RE2, RE3
O
29
TEST1
I
Test pin
30
TEST2
I
Test pin
31
RES
I
System reset pin with pull-up resistor.
32
INT
CLKC
I
External interrupt pin with pull-up resistor.
33
I
Clock mode control pin.
CLKC = "H": Crystal mode
CLKC = "L": RC mode
Input pin for oscillator.
Connected to crystal or resistor to generate system clock by
pin option.
Output pin for oscillator.
Connected to crystal or resistor to generate system clock by
pin option.
Positive power supply (+).
34
XIN
I
35
XOUT
O
36
V
DD
I
1,2,37,38,
39,40
NC
-
No connection.
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