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