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VFD Driver/Controller IC PT6315
PT6315 v2.0 Page 14 Sep. 2002
SERIAL COMMUNICATION FORMAT
The following diagram shows the PT6315 serial communication format. The DOUT Pin is an N-channel, open-
drain output pin, therefore, it is highly recommended that an external pull-up resistor (1 KOhms to 10 KOhms)
must be connected to DOUT.
Figure 13: PT6315 Serial Communication Format
where: t
wait
(waiting time) > 1us
It must be noted that when the data is read, the waiting time (t
wait
) between the rising of the eighth clock that has
set the command and the falling of the first clock that has read the data is greater or equal to 1µs.
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