Datasheet

Appendix C I/O Port Block Diagrams
Rev.6.00 Sep. 27, 2007 Page 1246 of 1268
REJ09B0220-0600
C.11 Port E
R
PEnPCR
C
QD
Reset
WPCRE
Reset
WDRE
R
C
QD
PE
n
RDRE
RPORE
PEnDR
WDDRE
C
QD
PEnDDR
RPCRE
Modes 4 to 6
Reset
Bus controller
R
External address
lower read
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
Internal upper data bus
Internal lower data bus
External
address write
Modes 4 to 6
8-bit bus mode
Mode 7
Figure C.11 Port E Block Diagram (Pins PE
0
to PE
7
)