Datasheet

Appendix C I/O Port Block Diagrams
Rev.7.00 Feb. 14, 2007 page 1082 of 1108
REJ09B0089-0700
C.9 Port E
R
PEnPCR
C
QD
Reset
WPCRE
Reset
WDRE
R
C
QD
PEn
RDRE
RPORE
PEnDR
WDDRE
C
QD
PEnDDR
RPCRE
Modes 4 to 6
Reset
R
External address lower read
Internal upper data bus
Internal lower data bus
External address write
8-bit bus
mode
Mode 7
Bus controlle
r
Modes 4 to 6
Legend:
WDDRE: Write to PEDDR
WDRE: Write to PEDR
WPCRE: Write to PEPCR
RDRE: Read PEDR
RPORE: Read port E
RPCRE: Read PEPCR
Note: n = 0 to 7
Figure C.9 Port E Block Diagram (Pins PE0 to PE7)