TP6312
1/4 TO 1/11-DUTY VFD CONTROLLER/DRIVER
General Description
The TP6312 is a VFD (Vacuum Fluorescent Display)
controller/driver that is driven on a 1/4 to 1/11-duty
factor.
It consists of 11 segment output lines, 6 grid
output lines, 5 segment/grid output drivelines, a
display memory, a control circuit, and a Key scan
circuit.
Serial data is input to TP6312 through a
three-line serial interface.
This VFD controller/driver
is ideal as a peripheral device of a single-chip
microcomputer.
Features
Multiple display modes (11-segment & 11-digit to
16-segment & 4-digit)
Key scanning (6
× 4 matrices)
Dimming circuit (eight steps)
High-voltage output (VDD – 35V max)
LED ports (4 chs, 20 mA max)
General-purpose input port (4 bits)
No external resistor necessary for driver outputs
(P-ch open-drain + pull-down resistor output)
Serial interface (CLK, STB, DIN, DOUT)
Ordering Information
TP 6312
Package Type F: LQFP
Footprint
S: 2.0 mm
L: 3.2 mm
Footprint
Version
Package Type
Block Diagram
DIN
DOUT
CLK
STB
Serial I/F
OSC
Command decoder
Display memory
16bit x 11 word
Timing generator key
scan
Key data memory
(4x6)
4 bit latch
4
4
Dimming circuit
11
6
5
5
5
16
11
VDD
VSS
VEE
(+5V)
(0V)
(-30V)
LED1
Seg1
Seg11
Seg12/Gird11
Seg16/Gird7
Grid1
Grid6
R
Key1
to
Key4
SW1
to
SW4
LED4
Version 1.1
Page 1 of 9
http://www.topro.com.tw
September 2003
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