Datasheet

Section 8 I/O Ports
Rev.7.00 Feb. 14, 2007 page 219 of 1108
REJ09B0089-0700
Port Description Pins
Mode
4
Mode
5
Mode
6
*
1
Mode
7
*
1
Port 4 • 8-bit input port P47/AN7/DA1
P46/AN6/DA0
P45/AN5
P44/AN4
P43/AN3
P42/AN2
P41/AN1
P40/AN0
8-bit input port also functioning as A/D converter analog
inputs (AN7 to AN0) and D/A converter analog outputs
(DA1 and DA0)
Port A • 4-bit I/O port
• Built-in MOS
input pull-up
• Open-drain
output capability
PA3/A19 to PA0/A16 Address output When DDR =
0 (after
reset): input
ports
When DDR =
1: address
output
I/O port
Port B • 8-bit I/O port
• Built-in MOS
input pull-up
PB7/A15 to PB0/A8 Address output When DDR =
0 (after
reset): input
port
When DDR =
1: address
output
I/O port
Port C • 8-bit I/O port
• Built-in MOS
input pull-up
PC7/A7 to PC0/A0 Address output When DDR =
0 (after
reset): input
port
When DDR =
1: address
output
I/O port
Port D • 8-bit I/O port
• Built-in MOS
input pull-up
PD7/D15 to PD0/D8 Data bus input/output I/O port