Renesas R8C series

R8C/1A Group, R8C/1B Group 5. Programmable I/O Ports
Rev.1.30 Dec 08, 2006 Page 25 of 315
REJ09B0252-0130
Figure 5.1 Configuration of Programmable I/O Ports (1)
P1_0 to P1_3
1
Analog input
Port latch
Direction
register
Data bus
Pull-up selection
Input to individual peripheral function
Drive capacity selection
P1_4
1
Port latch
Direction
register
Data bus
Pull-up selection
P1_5
Port latch
Direction
register
Data bus
Pull-up selection
Input to individual peripheral function
Output from individual peripheral function
Output from individual peripheral function
NOTE :
1. symbolizes a parasitic diode.
Ensure the input voltage to each port will not exceed VCC.
(Note 1)
(Note 1)
(Note 1)