HD64F38024HV Datasheet, PDF (235/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 8 I/O Ports
8.4.3 Pin Functions
Table 8.9 shows the port 4 pin functions.
Table 8.9 Port 4 Pin Functions
Pin
P43/IRQ0
Pin Functions and Selection Method
The pin function depends on bit IRQ0 in PMR2.
IRQ0
0
Pin function
P43 input pin
1
IRQ0 input pin
P42/TXD32
The pin function depends on bit TE in SCR3, bit SPC32 in SPCR, and bit PCR42
in PCR4.
SPC32
0
1
TE
0
1
PCR42
Pin function
0
P42 input pin
1
P42 output pin
*
TXD32 output pin
P41/RXD32
The pin function depends on bit RE in SCR3 and bit PCR41 in PCR4.
RE
0
1
PCR41
0
1
*
Pin function
P41 input pin
P41 output pin
RXD32 input pin
P40/SCK32
The pin function depends on bit CKE1 and CKE0 in SCR3, bit COM in SMR3,
and bit PCR40 in PCR4.
CKE1
0
1
CKE0
0
1
*
COM
0
1
*
*
PCR40
0
1
*
*
Pin function
P40 input pin P40 output pin SCK32 output SCK32 input
pin
pin
*: Don’t care
Rev. 8.00 Mar. 09, 2010 Page 213 of 658
REJ09B0042-0800