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Dot Character VFD Controller/Driver IC
PT6314
Pin Name
I/O
Description
Pin No.
Serial Input/Output Pin
Under the Serial Data Transfer Mode, this pin functions as an I/O
I/O Pin.
Under the Parallel Data Transfer Mode, this pin may be connected
SI/SO
15
to either “H” or “L”
Parallel Data Input/Output Pins
Under the Parallel Data Transfer Mode, these pins are used as I/O
Pin.
DB0 to DB7
I/O
16-23
Under the 4-bit Transfer Mode, DB4 to DB7 are used.
I/F Select Pin
IFSEL
MCU
I
I
This pin is used to select the I/F mode: Serial or Parallel Transfer
24
25
0: Serial Data Transfer
1: Parallel Data Transfer
Interface Select Pin
This pin is used to select the interface mode: i80 or M68.
0: i80 CPU Mode
1: M68 CPU Mode
Chip Select Pin
When this pin is set to “L” the PT6314 is active.
Segment Output Select Pin
This pins are used to set SG1 to SG80.
Extension Grid Driver Clear Signal Output Pin
Active: Low
/CS
I
I
26
RL1,RL2
27, 28
/CLR
O
The Grid Data stored in extension driver latch are outputted
when this pin is set to “HIGH”. If this pin is set to ”LOW”, the
extension driver outputs LOW.
29
LATCH
SDO
O
O
Extension Grid Driver Latch Enable Signal Output Pin
Extension Grid Driver Serial Data Output Pin
Extension Grid Driver Shift Clock Output Pin
Rising Edge: Active
Test Pin for IC Testing only.
This pin should be “open”.
30
31
SLKO
32
33
TESTOUT
O
VSS1
-
Logic Ground Pin
34
GR1 to GR24
SG1 to SG80
O
O
Grid Signal Output Pins
Segment Signal Output Pins
143-120
see (1)
Note: Refer to Duty Ratio Setting Section
PT6314 V1.3
- 5 -
March, 2006
PTC [ PRINCETON TECHNOLOGY CORP ]
