Datasheet

Appendix C I/O Port Block Diagrams
Rev.7.00 Feb. 14, 2007 page 1083 of 1108
REJ09B0089-0700
C.10 Port F
R
PF0DDR
C
QD
Reset
WDDRF
Reset
WDRF
R
C
QD
PF0
RDRF
RPORF
Bus request input
PF0DR
Bus controller
BRLE bit
Chip select
Interrupt controller
IRQ interrupt input
Port
CS25E bit
PF0CS4S bit
Modes 4 to 6
Internal data bus
Legend:
WDDRF: Write to PFDDR
WDRF: Write to PFDR
RDRF: Read PFDR
RPORF: Read port F
CS25E: CS25 enable
PF0CS4S: Port F0 chip select 4 select
BRLE: Bus release enable
Figure C.10(a) Port F Block Diagram (Pin PF0)