NEC PD17062 User Manual Page 82

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82
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PD17062
9.16 PORT1C I/O SETTING (27H)
9.17 SERIAL I/O0 STATUS REGISTER (28H)
b3 b2 b1 b0
SIO0SF8 SIO0SF9 SBBSY
28H
0
1
SBSTT
Busy condition detection
0
1
Start condition detection
0
1
9 clock detection
0
1
8 clock detection
Detects the stop condition
Detects the start condition
Resets when the contents of the clock counter become 9
Detects the start condition
Resets when the contents of the clock counter become 0 or 1
Sets when the contents of the clock counter become 9
Resets when the contents of the clock counter become 0 or 1
Sets when the contents of the clock counter become 8
b
3
b
2
b
1
b
0
0 0 P1CGIO
27H
0
1
0
P1C port I/O setting
P1C
1
, P1C
2
, P1C
3
: input port
P1C
1
, P1C
2
, P1C
3
: output port
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