HD6475348R Datasheet, PDF (448/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

Table C-1 (b) Port 1 Port Read (Pin P11)
Setting
DDR = 0
DDR = 1
Port Read Data
Pin value
E
P12
Reset
R
QD
P12 DDR
C
WP1D
Reset
R
QD
P12 DR
C
WP1
Mode 1, 2, 3,
or 4
WP1D: Write to P1DDR
WP1: Write to Port 1
RP1: Read Port 1
System control
register 1, bit 3
BRLE
Q
BACK
RP1
Figure C-1 (c) Schematic Diagram of Port 1, Pin P12
Table C-1 (c) Port 1 Port Read (Pin P12)
Mode
1, 2, 3, 4
7
Setting
BRLE = 1
BRLE = 0
DDR = 0
DDR = 1
DDR = 0
DDR = 1
Port Read Data
DR value
Pin value
DR value
Pin value
DR value
438