PT6311_10 Datasheet, PDF (1/22 Pages) Princeton Technology Corp – VFD Driver/Controller IC

DESCRIPTION
PT6311 is a Vacuum Fluorescent Display (VFD)
Controller driven on a 1/8 to 1/16 duty factor housed in
52-pin plastic QFP Package. Twelve segment output
lines, 8 grid output lines, 8 segment/grid output drive
lines, one display memory, control circuit, key scan
circuit are all incorporated into a single chip to build a
highly reliable peripheral device for a single chip micro
computer. Serial data is fed to PT6311 via a three-line
serial interface.
APPLICATIONS
• Microcomputer Peripheral Devices
PT6311
VFD Driver/Controller IC
FEATURES
• CMOS Technology
• Low Power Consumption
• Key Scanning (12 x 4 matrix)
• Multiple Display Modes: (12 segments, 16 digits to
20 segments, 8 digits)
• 8-Step Dimming Circuitry
• LED Ports Provide (5 channels, 20mA max.)
• 4- Bits General Purpose Input Ports Provided
• Serial Interface for Clock, Data Input, Data Output,
Strobe Pins
• No External Resistors Needed for Driver Outputs
• Available in 52pins QFP and LQFP
BLOCK DIAGRAM
DIN
DOUT
CLK
STB
VDD
OS C
SW1
SW2
SW3
SW4
LE D1
LE D2
LE D3
LE D4
LE D5
Ser ial
Data
Inter face
Con tro l
Displa y Memo ry
OS C
Ti ming Ge ner ato r
Ge ner al
Inp ut
Reg iste r
Ke y Matrix Memory
LED
Drive r
K1 K2 K3 K4
S egmen t Driver /
G rid Driver /
Ke y Scan O utput
Dimming Cir cu it
VDD GND VE E
Gr id
Drive r
SG 1/KS 1
SG 2/KS 2
SG 3/KS 3
SG 4/KS 4
SG 5/KS 5
SG 6/KS 6
SG 7/KS 7
SG 8/KS 8
SG 9/KS 9
SG 10/KS 10
SG 11 /K S11
SG 12/KS 12
SG 13/G R1 6
SG 14/G R1 5
SG 15/G R1 4
SG 16/G R1 3
SG 17/G R1 2
SG 18/G R11
SG 19/G R1 0
SG 20/G R9
GR1
GR2
GR3
GR4
GR5
GR6
GR7
GR8
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