PT6324 [PTC]
VFD Driver/Controller IC; VFD驱动器/控制器IC
| 型号： | PT6324 |
| 厂家： | 
PRINCETON TECHNOLOGY CORP |
| 描述： | VFD Driver/Controller IC |
| 文件： | 总4页 (文件大小：343K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PT6324
VFD Driver/Controller IC
DESCRIPTION
FEATURES
PT6324 is a Vacuum Fluorescent Display (VFD)
Controller driven on a 1/8 to 1/16 duty factor housed in
52-pin plastic QFP/LQFP. 24 segment output lines, 16
grid output 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 PT6324 via a
three-line serial interface.
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•
•
•
•
CMOS technology
Low power consumption
Wide operating voltage VDD=2.7V~5.5V
Key scanning (16 x 2 matrix)
Display modes: (24 segments, 8 digits to 24
segments, 16 digits)
•
•
8-Step dimming circuitry
Serial interface for Clock, Data Input, Data Output,
Strobe pins
•
No external resistors needed for driver outputs
APPLICATIONS
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•
Microcomputer peripheral devices
Digital Audio/Video system: CD/MD/VCD/DVD
players
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•
•
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Car audio
VCR
Electric scale meter
P.O.S.
Electronic equipment with instructional display
BLOCK DIAGRAM
Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT6324
16-GRID X 24-SEGMENT VFD APPLICATION CIRCUIT
Notes:
1. The value of Rosc is depend on PT6324 IC chip supply voltage of VDD (Rosc=82KΩ, when VDD=5V; Rosc=100KΩ, when VDD=3.3V).
2. Z1, Z2=Zener diode 5.1V
3. Please adding the current amplifying circuit as following figure when IOHGR>15mA on VFD panel for high brightness issue.
*=C.A. Circuit=Current amplifying circuit
C.A. Circuit-1 & C.A. Circuit-2 Ex.:
Parts recommended:
•
•
Q=SAMSUNG-KSR1105 (General fast switching transistor)
D=HITACHI-HSM221C (General fast recovery diode)
V1.3
2
PT6324
ORDER INFORMATION
Valid Part Number
PT6324-Q
Package Type
52-Pin, QFP
Top Code
PT6324-Q
PT6324-LQ
PT6324-LQ
52-Pin, LQFP
PIN CONFIGURATION
V1.3
3
PT6324
PIN DESCRIPTION
Pin Name
I/O
Description
Pin No.
Clock input pin
CLK
I
1
This pin reads serial data at the rising edge and outputs data at the falling edge.
Data input pin
DIN
STB
I
I
When this pin acts as input pin, serial data is inputted at the rising edge of the shift
clock (starting from the lower bit)
2
3
4
Serial interface strobe pin
The data input after the STB has fallen is processed as a command. When this in
is “HIGH”, CLK is ignored.
Data output pin (N-channel, Open-drain)
When this pin acts as output pin, serial data is outputted at the falling edge of the
shift clock (starting from the lower bit)
DOUT
O
Key data input pins
The data inputted to these pins is latched at the end of the display cycle.
K1 to K2
OSC
I
I
5, 6
7
Oscillator input pin
A resistor is connected to this pin to determine the oscillation frequency.
GND
VDD
-
-
Ground pin
8, 52
9, 51
Logic power supply
SG1/KS1 to
SG16/KS16
High-voltage segment output pins
Also acts as the key source
O
10 to 25
SG17 to SG24
GR1 to GR16
VEE
O
O
-
High-voltage segment output pins
High-voltage grid output pins
Pull-down level
26 to 33
34 to 49
50
V1.3
4
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