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CHAPTER 16 SERIAL INTERFACE CHANNEL 0 (
µ
PD78014Y Subseries)
405
Avoidance:
If the stop condition output timing for the
µ
PD78014Y Subseries device has been determined
previously (i.e. amount of communication data between the
µ
PD78014Y Subseries device
and the master device is fixed), then it is possible to avoid this restriction by software.
Set bit 5 (WUP) of serial operating mode register 0 (CSIM0) and serial I/O shift register 0
(SIO0) of the slave device to 1 and FFH respectively before a stop condition signal is output.
Then the wake-up function is enabled for the next slave address field which is sent from the
master device, and the N-ch open-drain output is high-impedance state automatically. As
a result, there is no influence on slave reception data.
Transfer line
Slave device operation
SCL
SDA0 (SDA1)
Software
operation
SIO0
Stop condition
Start condition
SIO0
←
FFH
WUP
←
1
FEH
The PD78014Y subseries
device does not influence
this bit
µ
Содержание 78014Y Series
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