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參數(shù)資料
| 型號： | 6P8B |
| 廠商： | NEC Corp. |
| 英文描述： | MOS INTEGRATED CIRCUIT 4-BIT SINGLE-CHIP MICROCONTROLLER FOR INFRARED REMOTE CONTROL TRANSMISSION |
| 中文描述： | 馬鞍山集成電路4位單片機的紅外遙控傳輸 |
| 文件頁數(shù)： | 25/95頁 |
| 文件大小： | 692K |
| 代理商： | 6P8B |
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25
μ
PD6P8, 6P8A, 6P8B
Data Sheet U17848EJ3V0DS
4.4 Control Register 1 (P4)
Control register 1 consists of 8 bits. The contents that can be controlled are as shown below.
After reset, the register becomes 0010 0110B.
Table 4-5. Control Register 1 (P4)
Bit
b
7
b
6
b
5
b
4
b
3
b
2
b
1
b
0
Name
—
—
K
I
S
0
/S
1
S
2
S
1
/LED
K
I/O
S
0
Pull-down Pull-down
STOP release
mode
mode
mode
Setting
0
Fixed
Fixed
OFF
OFF
Disable
S
1
IN
OFF
1
to 0
to 0
ON
ON
Enable
LED
OUT
IN
After reset
0
0
1
0
0
1
1
0
b
0
: Specifies the input mode of the S
0
port. 0 = OFF mode (high impedance); 1 = IN (input mode).
b
1
: Specifies the I/O mode of the K
I/O
port.
0 = IN (input mode); 1 = OUT (output mode).
b
2
: Specifies the I/O mode of the S
1
/LED port. 0 = S
1
(input mode); 1 = LED (output mode).
b
3
: Specified the use of STOP mode release by S
2
port (with/without pull-down resistor). 0 = disable (without
pull-down); 1 = enable (with pull-down).
b
4
: Specifies the use of a pull-down resistor in S
0
/S
1
port input mode. 0 = OFF (not used);
1 = ON (used)
b
5
: Specifies the use of a pull-down resistor for the K
I
port. 0 = OFF (not used);
1 = ON (used).
Remark
In output mode or in OFF mode, all the pull-down resistors are automatically disconnected.
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