Hitachi H8/500 Series - Page 421

Table C-1 (g) Port 1 Port Read (Pin P17)
Setting Port Read Data
8-bit timer output enable 8-bit timer output value
8-bit timer DDR = 0 Pin value
output disable DDR = 1 DR value
RP1
P1
7
WP1
8-Bit timer module
Output enable
8-Bit timer output
WP1D:
WP1:
RP1:
Write to P1DDR
Write to Port 1
Read Port 1
Internal data bus (PDB15)
C
R
QD
P1 DR
7
C
R
QD
P1 DDR
7
Reset
Reset
WP1D
Figure C-1 (g) Schematic Diagram of Port 1, Pin P17
412
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