HD6475348R Datasheet, PDF (451/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

Reset
R
QD
P15 DDR
C
WP1D: Write to P1DDR
WP1: Write to Port 1
RP1: Read Port 1
WP1D
Reset
R
P15
QD
System control
P15 DR
register 1, bit 5
C
IRQ0 E
WP1
Q
RP1
IRQ0 to CPU
Figure C-1 (f) Schematic Diagram of Port 1, Pin P15
Table C-1 (f) Port 1 Port Read (Pin P15)
Setting
IRQ0E = 1
IRQ0E = 0
Pin value
DDR = 0
DDR = 1
Port Read Data
Pin value
DR value
441