Datasheet

Appendix C I/O Port Block Diagrams
Rev.7.00 Feb. 14, 2007 page 1084 of 1108
REJ09B0089-0700
Legend:
WDDRF: Write to PFDDR
WDRF: Write to PFDR
RDRF: Read PFDR
RPORF: Read port F
CS25E: CS25 enable
PF1CS5S: Port F1 chip select 5 select
BRLE: Bus release enable
R
PF1DDR
C
QD
Reset
WDDRF
Modes 4 to 6
Reset
WDRF
R
PF1DR
C
QD
PF1
RDRF
RPORF
Bus controller
BRLE bit
Chip select
Internal data bus
Bus request
acknowledge
output
Port
CS25E bit
PF1CS5S bit
Interrupt controller
IRQ interrupt input
Figure C.10(b) Port F Block Diagram (Pin PF1)