Table 7.1 Port Functions (4) - Renesas H8S/2437 Hardware Manual

Table 7.1 Port Functions (4)
Port Description
Port 8 General I/O
port also
functioning as
an A/D
converter
external
trigger input,
PWMX output,
SCI_3, SCI_4,
IIC3_0, and
IIC3_1
input/output,
and TPU
input/output.
Port 9 General I/O
port also
functioning as
a bus control
input/output,
system clock
output, and
TPU
input/output.
Extended Mode (EXPE = 1)
Normal
P87/ADTRG/ExTIOCB0
P86/ExTIOCA0
P85/PWX1
P84/PWX0
P83/SDA1/RxD4
P82/SCL1/TxD4
P81/SDA0/RxD3
P80/SCL0/TxD3
P97/WAIT/ExTIOCD0/
ExTCLKB
P96/φ
P95/AS
HWR
RD
P92/CS1/ExTIOCB2/
ExTCLKD
P91/CS2/ExTIOCA2
P90/LWR/ExTIOCB1/
ExTCLKC
Single-Chip Mode
(EXPE = 0)
Multiplex
P97/ExTIOCD0/
ExTCLKB
P96
AH
P95
P94
P93
P92/ExTIOCB2/
ExTCLKD
P91/ExTIOCA2
P90/ExTIOCB1/
ExTCLKC
Rev. 1.00, 09/03, page 135 of 704
I/O Status
NMOS push-
pull output
(P80 to P83)