M16C28 Datasheet, PDF (305/423 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/Tiny SERIES

M16C/28 Group (M16C/28, M16C/28B)
P20, P21, P70,P71,
P72, P73
Data bus
Pull-up selection
Direction
register
"1"
Port latch
Output
Switching
between
CMOS and
Nch
Input to respective peripheral functions
17. Programmable I/O Ports
(1)
P82 to P84
Pull-up selection
Direction register
Data bus
Port latch
(1)
Input to respective peripheral functions
P31, P62, P66, P77,
P90 to P92
Pull-up selection
Direction register
Data bus
Port latch
(1)
Input to respective peripheral functions
NOTES:
1.
symbolizes a parasitic diode.
Make sure the input voltage on each port will not exceed Vcc.
Figure 17.2 I/O Ports (2)
Rev. 2.00 Jan. 31, 2007 ^{page 285} of 385
REJ09B0047-0200