HD6475328CG Datasheet, PDF (418/459 Pages) Hitachi Semiconductor – Manual Gives a Hardware Description

Reset
R
QD
WP1D: Write to P1DDR
WP1: Write to Port 1
RP1: Read Port 1
P13 DDR
C
WP1D
Reset
R
P13
QD
P13 DR
C
WP1
Mode 1, 2, 3,
or 4
Port 1 control register,
bit 3
BRLE
Q
RP1
BREQ to CPU
Figure C-1 (d) Schematic Diagram of Port 1, Pin P13
Table C-1 (d) Port 1 Port Read (Pin P13)
Mode
1,2,3,4
7
Setting
BRLE = 1
BRLE
=0
DDR = 0
DDR = 1
DDR = 0
DDR = 1
Port Read Data
Pin value
Pin value
DR value
Pin value
DR value
409