Datasheet

Section 1 Overview
Rev. 4.00 Jun 06, 2006 page 21 of 1004
REJ09B0301-0400
Pin No.
Type Symbol
FP-80A
TFP-80C I/O Name and Function
TxD0
TxD1
TxD2
11
78
39
Output Transmit data: Data output pins.Serial com-
munication
interface
(SCI0, SCI1,
SCI2)
RxD0
RxD1
RxD2
10
79
40
Input Receive data: Data input pins.
SCK0
SCK1
SCK2
9
80
41
Input/
output
Serial clock: Clock input/output pins.
The SCK0 output type is NMOS push-pull in the
H8S/2138 Group and CMOS output in the
H8S/2134 Group.
SCI with
IrDA (SCI2)
IrTxD
IrRxD
39
40
Output
Input
IrDA transmit data/receive data: Input and output
pins for data encoded for IrDA use.
HDB7 to
HDB0
72 to 65 Input/
output
Host interface data bus: Bidirectional 8-bit bus for
accessing the host interface.
Host
interface
(HIF)
CS1,
CS2,
ECS2
15, 75, 20 Input Chip select 1 and 2: Input pins for selecting host
interface channel 1 or 2.
IOR 17 Input I/O read: Input pin that enables reading from the
host interface.
IOW 16 Input I/O write: Input pin that enables writing to the host
interface.
HA0 74 Input Command/data: Input pin that indicates whether
an access is a data access or command access.
GA20 75 Output GATE A20: A20 gate control signal output pin.
HIRQ11
HIRQ1
HIRQ12
42
43
44
Output Host interrupt 11, 1, and 12: Output pins for
interrupt requests to the host.
HIFSD 76 Input Host interface shutdown: Control input pin used
to place host interface input/output pins in the high-
impedance/cutoff state.
Keyboard
control
KIN0 to
KIN7
21 to 24,
25 to 28
Input Keyboard input: Matrix keyboard input pins.
Normally, P10 to P17 and P20 to P27 are used as
key-scan outputs. This enables a maximum 16-
output × 16-input, 256-key matrix to be configured.