參數(shù)資料
型號: UPD17246MC-xxx-5A4
廠商: NEC Corp.
英文描述: 4-BIT SINGLE-CHIP MICROCONTROLLERS FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTERS
中文描述: 4位單片微控制器的小型通用兩用紅外遙控遞質(zhì)
文件頁數(shù): 42/102頁
文件大?。?/td> 461K
代理商: UPD17246MC-XXX-5A4
42
Data Sheet U15002EJ1V0DS
μ
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
3.12 Specifying Resistor Connection (Port 0E, 1A)
(1) Port 0E
If a key matrix is not used, whether or not a pull-up resistor is connected to port P0E can be specified in 1-
bit units by using the following registers of the register file
Note
.
3
2
1
0
P0EBPU3 P0EBPU2
P0EBPU1 P0EBPU0
Address
RF: 17H
P0EBPU0
After reset
0H
R/W
R/W
0
1
Connects pull-up resistor to P0E
0
P0EBPU1
0
1
P0EBPU2
0
1
P0EBPU3
0
1
Not connected
Connected
Connects pull-up resistor to P0E
1
Not connected
Connected
Connects pull-up resistor to P0E
2
Not connected
Connected
Connects pull-up resistor to P0E
3
Not connected
Connected
Note
To disconnect the pull-up resistor in the output mode, clear the corresponding bit of the P0EBPU register.
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