HD64F2638F20J Datasheet, PDF (1478/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Appendix C I/O Port Block Diagrams
C.2 Port 3 Block Diagrams
*1
P30
*2
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Reset
R
QD
P30DDR
C
WDDR3
REset
R
QD
P30DR
C
WDR3
Reset
R
QD
P30ODR
C
WODR3
RODR3
RDR3
SCI module
Serial transmit enable
Serial transmit data
TxD0
RPOR3
Legend:
WDDR3: Write to P3DDR
WDR3: Write to P3DR
WODR3: Write to P3ODR
RDR3: Read P3DR
RPOR3: Read port 3
RODR3: Read P3ODR
Notes: 1. Output enable signal
2. Open drain control signal
Figure C-2 (a) Port 3 Block Diagram (Pin P30)
Page 1428 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010