English
Language : 

PT6312_10 Datasheet, PDF (12/21 Pages) Princeton Technology Corp – VFD Driver/Controller IC
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
VFD Driver/Controller IC
PT6312
SERIAL COMMUNICATION FORMAT
The following diagram shows the PT6312 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.
Reception (Data/Co mma nd Write)
If data continues
STB
DIN
b0
b1 b2
b6
b7
CLK
1
2
3
7
8
Transmissio n (Data Read )
STB
DIN
CLK
DOUT
b0 b1 b2 b3 b4 b5 b6 b7
1 234 56 78
t wait
1 23456
b0 b1 b2 b3 b4 b5
Data Read Command is set
Data Reading Starts
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.
PT6312 V2.6
- 12 -
December, 2005