HD64F2149 Datasheet, PDF (990/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

C.3 Port 3 Block Diagram
Mode 1
Hardware
standby
CS
IOR
External
address
write
P3n
Mode 2, 3
EXPE
LPCE
HI12E
RP3P
Reset
R
QD
P3nPCR
C
WP3P
Reset
R
QD
P3nDDR
C
WP3D
Reset
CS
IOW
R
QD
P3nDR
C
WP3
HIF : LPC
Address/data output
Output enable
WP3P : Write to P3PCR
WP3D : Write to P3DDR
WP3 : Write to port 3
RP3P : Read P3PCR
RP3 : Read port 3
n = 0 to 3
RP3
External address read
Figure C.5 Port 3 Block Diagram (Pins P30 to P33)
Address/data input
956