Hitachi H8/500 Series - C) Schematic Diagram of Port 1, Pin P1

Table C-1 (b) Port 1 Port Read (Pin P11)
Setting Port Read Data
DDR = 0 Pin value
DDR = 1 E
Table C-1 (c) Port 1 Port Read (Pin P12)
Mode Setting Port Read Data
BRLE = 1 DR value
1,2,3,4 BRLE DDR = 0 Pin value
= 0 DDR = 1 DR value
DDR = 0 Pin value
DDR = 1 DR value
RP1
BRLE
BACK
Q
Port 1 control
register, bit 3
Mode 1, 2, 3,
or 4
WP1
C
R
QD
P1 DR
2
C
R
QD
P1 DDR
2
WP1D
Reset
Reset
WP1D:
WP1:
RP1:
Write to P1DDR
Write to Port 1
Read Port 1
Internal data bus (PDB10)
P12
7
Figure C-1 (c) Schematic Diagram of Port 1, Pin P12
408
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