PT6311-LQ PTC [Princeton Technology Corp], PT6311-LQ Datasheet - Page 14
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PT6311-LQ
Manufacturer Part Number
PT6311-LQ
Description
VFD Driver/Controller IC
Manufacturer
PTC [Princeton Technology Corp]
Datasheet
1.PT6311-LQ.pdf
(22 pages)
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SERIAL COMMUNICATION FORMAT
The following diagram shows the PT6311 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 KΩ to 10 KΩ) must be connected to
DOUT.
where: twait (waiting time) > 1µs
It must be noted that when the data is read, the waiting time (twait) 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.
V3.2
Reception (Data/Command Write)
Transmission (Data Read)
DOUT
STB
DIN
CLK
STB
CLK
DIN
1
b0
2
b1
Data Read Command is set
3
b2
1
b0
4
b3
2
5
b1
b4
6
b5
3
b2
7
b6
14
8
b7
t
wait
7
1
b6
b0
Data Reading Starts
2
b1
8
b7
3
b2
If data continues
4
b3
November 2009
5
b4
PT6311
6
b5