Datasheet

Appendix C I/O Port Block Diagrams
Rev. 6.00 Aug 04, 2006 page 640 of 680
REJ09B0145-0600
P35
SCI31 module
PDR3
5
PUCR3
5
SCINV1
PCR3
5
SBY
V
SS
PDR3: Port data register 3
PCR3: Port control register 3
PUCR3: Port pull-up control register 3
SCINV1: Bit 1 of serial port control register (SPCR)
TXD31
Internal data bus
TE31
V
CC
V
CC
Figure C.3 (b) Port 3 Block Diagram (Pin P3
5
)