HD6475328-CP10 Datasheet, PDF (420/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

Reset
R
QD
P1n DDR
C
WP1D: Write to P1DDR
WP1: Write to Port 1
RP1: Read Port 1
n:
5 or 6
WP1D
Reset
R
P1n
QD
Port 1 control register,
P1n DR
bits 5 and 6
C
IRQ0 E
WP1
or
IRQ1 E
Q
RP1
IRQ0, IRQ1to CPU
Figure C-1 (f) Schematic Diagram of Port 1, Pins P15 and P16
Table C-1 (f) Port 1 Port Read (Pins P15, P16)
Setting
IRQ0E
or
=1
IRQ1E
IRQ0E
or
=0
IRQ1E
Port Read Data
Pin value
DDR = 0 Pin value
DDR = 1 DR value
411