Datasheet

Section 9 I/O Ports
Rev.6.00 Sep. 27, 2007 Page 350 of 1268
REJ09B0220-0600
Port Description Pins Mode 4
*
1
Mode 5
*
1
Mode 6 Mode 7
Port B • 8-bit I/O
port
• Built-in
MOS input
pull-up
PB
7
/A
15
to PB
0
/A
8
Address output When DDR =
0 (after reset):
input port
When DDR =
1: address
output
I/O ports
Port C • 8-bit I/O
port
• Built-in
MOS input
pull-up
PC
7
/A
7
to PC
0
/A
0
Address output When DDR =
0 (after reset):
input port
When DDR =
1: address
output
I/O ports
Port D • 8-bit I/O
port
• Built-in
MOS input
pull-up
PD
7
/D
15
to PD
0
/D
8
Data bus input/output I/O ports
Port E • 8-bit I/O
port
• Built-in
MOS input
pull-up
PE
7
/D
7
to PE
0
/D
0
In 8-bit bus mode: I/O port
In 16-bit bus mode: data bus input/output
I/O ports
Port F • 8-bit I/O
port
PF
7
/φ When DDR = 0: input port
When DDR = 1 (after reset): φ output
When DDR =
0 (after reset):
input port
When DDR =
1: φ output
PF
6
/AS When ASOD = 1: I/O port
When ASOD = 0: AS output
I/O ports
PF
5
/RD
PF
4
/HWR
RD, HWR output
PF
3
/LWR When LWROD = 1: I/O port
When LWROD = 0: LWR output
PF
2
/LCAS
*
2
/WAIT/BREQO When WAITE = 0 and BREQOE = 0 (after
reset): I/O port
When WAITE = 1, BREQOE = 0, and
WAITPS = 0, DDR = 0: WAIT input
When WAITE = 0, BREQOE = 1, and
BREQOPS = 0: BREQO output
When RMTS2 to RMTS0= B'001 to B'011,
and 16-bit access space is set: LCAS output