PD17225_15 Datasheet, PDF (30/86 Pages) Renesas Technology Corp – 4-BIT SINGLE-CHIP MICROCONTROLLER FOR SMALL GENERAL-PURPOSE INFRARED REMOTE CONTROL TRANSMITTER

µPD17225, 17226, 17227, 17228
3.8 Specifying Pull-up Resistor Connection
Whether or not a pull-up resistor is connected to port P0E can be specified by the following registers of the register
file in 1-bit units when the port is in the input mode^Note.
3
2
1
0
P0EBPU3 P0EBPU2 P0EBPU1 P0EBPU0
Address:
RF : 17H
On reset:
0H
R/W:
R/W
P0EBPU0 Connects Pull-Up Resistor to P0E0
0
Not connected
1
Connected
P0EBPU1 Connects Pull-Up Resistor to P0E1
0
Not connected
1
Connected
P0EBPU2 Connects Pull-Up Resistor to P0E2
0
Not connected
1
Connected
P0EBPU3 Connects Pull-Up Resistor to P0E3
0
Not connected
1
Connected
Note To disconnect the pull-up resistor in the output mode, clear the corresponding bit of the P0EBPU register.
28
Data Sheet U12643EJ2V0DS00