HD64F3687HV Datasheet, PDF (151/538 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

Section 9 I/O Ports
9.2.4 Pin Functions
The correspondence between the register specification and the port functions is shown below.
P24 pin
Register
PCR2
Bit Name
PCR24
Setting Value 0
1
Pin Function
P24 input pin
P24 output pin
P23 pin
Register
PCR2
Bit Name
PCR23
Setting Value 0
1
Pin Function
P23 input pin
P23 output pin
P22/TXD pin
Register
PMR1
Bit Name
TXD
Setting Value 0
1
Legend: X: Don't care.
PCR2
PCR22
0
1
X
Pin Function
P22 input pin
P22 output pin
TXD output pin
P21/RXD pin
Register
SCR3
Bit Name
RE
Setting Value 0
1
Legend: X: Don't care.
PCR2
PCR21
0
1
X
Pin Function
P21 input pin
P21 output pin
RXD input pin
Rev.5.00 Nov. 02, 2005 Page 117 of 500
REJ09B0027-0500