PT6315-SL PTC [Princeton Technology Corp], PT6315-SL Datasheet - Page 11

• Manufacturer Part Number: PT6315-SL
• Description: VFD Driver/Controller IC
• Manufacturer: PTC [Princeton Technology Corp]

VFD Driver/Controller IC
SERIAL COMMUNICATION FORMAT
The following diagram shows the PT6315-S 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
(1KΩ to 10KΩ) must be connected to DOUT.
RECEPTION (DATA/COMMAND WRITE)
TRANSMISSION (DATA READ)
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.
PT6315-S V1.9
D O U T
C L K
S T B
D I N
C L K
S T B
D I N
1
b 0
2
b 1
D a t a R e ad C o m m an d is s e t
1
b 0
3
b 2
2
4
b 3
b 1
5
b 4
3
b 2
6
b 5
- 11 -
7
b 6
8
b 7
t
wa it
7
b 6
1
b 0
8
D a t a R e ad in g S t a rt s
b 7
2
URL: http://www.princeton.com.tw
b 1
I f d at a c o nt in u e s
3
b 2
Fax: [phone]
4
Tel: [phone]
September, 2005
b 3
PT6315-S
5
b 4
6
b 5