R8C/13 Group
15. Programmable I/O Ports
P3
3
Pull-up selection
Direction
register
Port latch
Data bus
(Note 1)
Digital
Filter
Input to respective peripheral functions
Pull-up selection
Direction
P3
7
register
"1"
Output
Port latch
Data bus
(Note 1)
Input to respective peripheral functions
Pull-up selection
P4
5
Direction
register
Port latch
Data bus
(Note 1)
Digital
Filter
Input to respective peripheral functions
NOTES:
1.
symbolizes a parasitic diode.
Make sure the input voltage on each pin will not exceed Vcc.
Figure 15.4 Programmable I/O Ports (4)
Rev.1.20 Jan 27, 2006 page 141 of 205
REJ09B0111-0120