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參數(shù)資料
| 型號： | MSM6641E-xx |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Built-in Remote Control Transmission Circuit 4-Bit Microcontroller |
| 中文描述： | 內(nèi)置遙控傳輸電路4位微控制器 |
| 文件頁數(shù)： | 4/6頁 |
| 文件大?。?/td> | 150K |
| 代理商： | MSM6641E-XX |
228
Semiconductor
MSM6641/6641E-xx
PIN DESCRIPTIONS
17
16
15
14
21
20
19
18
Symbol
Pin
Type
Description
V
DD
8
–
Power supply pin (1.5 V/3.0 V)
V
SS
11
–
Ground pin
XT
9
I
Oscillation input pin: a ceramic oscillator is connected.
XTB
10
O
Oscillation output pin: a ceramic oscillator is connected.
RCOUT
7
O
Remote control output pin: This pin outputs the remote control
output set by the program. A "L" level is output at the time of reset.
RESET
12
I
System reset input pin: when a "L" level is applied to this pin, the
microcontroller's internal
state is initialized and the program starts from
ROM address 000H.
PORT 0
6
5
4
3
I
4-bit input port: normally used as the input of key matrix. A pull-down
resistor or high impedance can be selected for each bit by the input
pull-down control register (PCHZO) of PORT0.
PORT 1
2
1
24
23
I
4-bit input port: normally used as the input of key matrix. A pull-down
resistor or high impedance for PORT1 can be selected by bit 0 of input
pull-down control register (PCHZX) of P
ORTS
1 and 2.
PORT 2
22
I
1-bit input port: normally used as the input of key matrix. A pull-down
resistor or high impedance for P2.0 can be selected by bit 1 of input
pull-down control register (PCHZX) of P
ORTS
1 and 2.
PORT 3
O
4-bit output port: normally used as the key return signal source of key
matrix.
PORT 4
O
4-bit output port: normally used as the key return signal source of key
matrix.
PORT 5
13
O
1-bit output port: normally used as the key return signal source of key
matrix.
P0.0
P0.1
P0.2
P0.3
P
P1.1
P1.2
P1.3
P2.0
P3.0
P3.1
P3.2
P3.3
P4.0
P4.1
P4.2
P4.3
P5.0
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