HD6473847RHV Datasheet, PDF (223/546 Pages) Renesas Technology Corp – Renesas 8-Bit Single-Chip Microcomputer H8 Family / H8/300L Super Low Power Series

Section 8 I/O Ports
8.2.4 Pin Functions
The port 4 pin functions are shown below.
• P43/IRQ0 pin
The pin function depends on the IRQ0 bit in PMR2.
IRQ0
Pin Function
0
P43 input pin
1
IRQ0 input pin
• P42/TXD32 pin
The pin function depends on the combination of bit TE in SCR3, bit SPC32 in SPCR, and bit
PCR42 in PCR4.
SPC32
0
TE
0
PCR42
0
1
Pin Function
P42 input pin
P42 output pin
Legend: *: Don't care.
1
1
*
TXD32 output pin
• P41/RXD32 pin
The pin function depends on the combination of bit RE in SCR3 and bit PCR41 in PCR4.
RE
0
PCR41
0
1
Pin Function
P41 input pin
P41 output pin
Legend: *: Don't care.
1
*
RXD32 input pin
Rev. 7.00 Mar. 08, 2010 Page 191 of 510
REJ09B0024-0700