Input/Output (I/O) Ports
Port H
MC68HC908AB32
—
Rev. 1.0
Technical Data
MOTOROLA
Input/Output (I/O) Ports
337
Table 17-9. Port H Pin Functions
DDRH
Bit
PTH Bit
I/O Pin
Mode
Accesses
to DDRH
Accesses to PTH
Read/Write
Read
Write
0
X
(1)
Input, Hi-Z
(2)
DDRH[1:0]
Pin
PTH[1:0]
(3)
1
X
Output
DDRH[1:0]
PTH[1:0]
PTH[1:0]
Notes:
1. X = don’t care.
2. Hi-Z = high impedance.
3. Writing affects data register, but does not affect the input.
Содержание MC68HC908AB32
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