Datasheet

Section 8 I/O Ports
Rev. 4.00 Sep 27, 2006 page 216 of 1130
REJ09B0327-0400
Expanded Modes Single-Chip Mode
Port Description Pins
Mode 1
Mode 2, Mode 3
(EXPE = 1)
Mode 2, Mode 3
(EXPE = 0)
Port 9 • 8-bit I/O port P97/WAIT/SDA0 I/O port also functioning as
expanded data bus control input
(WAIT) and I
2
C bus interface 0
(option) input/output (SDA0)
I/O port also functioning as
I
2
C bus interface 0 (option)
input/output (SDA0)
P96/φ/EXCL When DDR =
0: input port or
EXCL input
When DDR =
1 (after reset):
φ output
When DDR = 0 (after reset): input port or EXCL
input
When DDR = 1: φ output
P95/AS/IOS/CS1
P94/HWR/IOW
P93/RD/IOR
Expanded data bus control output
(AS/IOS, HWR, RD)
I/O port also functioning as
host interface control input
(CS1, IOW, IOR)
P92/IRQ0
P91/IRQ1
I/O port also functioning as external interrupt input (IRQ0, IRQ1)
P90/LWR/IRQ2/
ADTRG/ECS2
I/O port also functioning as
expanded data bus control output
(LWR), external interrupt input
(IRQ2), and A/D converter external
trigger input (ADTRG)
I/O port also functioning as
external interrupt input
(IRQ2), A/D converter
external trigger input
(ADTRG), and host
interface control input
(ECS2)
Port A • 8-bit I/O port PA7/A23/KIN15/
CIN15/PS2CD
PA6/A22/KIN14/
CIN14/PS2CC
PA5/A21/KIN13/
CIN13/PS2BD
PA4/A20/KIN12/
CIN12/PS2BC
PA3/A19/KIN11/
CIN11/PS2AD
PA2/A18/KIN10/
CIN10/PS2AC
PA1/A17/KIN9/
CIN9
PA0/A16/KIN8/
CIN8
I/O port also
functioning as
key-sense
interrupt input
(KIN15 to
KIN8),
expansion A/D
converter input
(CIN15 to
CIN8), and
keyboard
buffer
controller
input/output
(PS2CD,
PS2CC,
PS2BD,
PS2BC,
PS2AD,
PS2AC)
I/O port also
functioning as
address output (A23
to A16), key-sense
interrupt input
(KIN15 to KIN8),
expansion A/D
converter input
(CIN15 to CIN8),
and keyboard buffer
controller input/
output (PS2CD,
PS2CC, PS2BD,
PS2BC, PS2AD,
PS2AC)
I/O port also functioning as
key-sense interrupt input
(
K
IN1
5
to KIN8), expansion
A/D converter input (CIN15
to CIN8), and keyboard
buffer controller
input/output (PS2CD,
PS2CC, PS2BD, PS2BC,
PS2AD, PS2AC)