HD6475348R Datasheet, PDF (452/487 Pages) Hitachi Semiconductor – Single-Chip Microcomputer

Reset
R
QD
P16 DDR
C
WP1D: Write to P1DDR
WP1: Write to Port 1
RP1: Read Port 1
WP1D
Reset
R
P16
QD
System control
P16 DR
register 1, bit 6
C
IRQ0 E
WP1
Q
A/D control
register, bit 7
RP1
TRGE
Falling edge
detector
Q
IRQ1 to CPU
ADTRG to A/D converter
Figure C-1 (g) Schematic Diagram of Port 1, Pin P16
Table C-1 (g) Port 1 Port Read (Pin P16)
Setting
TRGE or IRQ1E = 1
TRGE and IRQ1E = 0
DDR = 0
DDR = 1
Port Read Data
Pin value
Pin value
DR value
442