PT6302
VFD Driver/Controller IC with Character RAM
DESCRIPTION
PT6302 is a dot matrix VFD Driver/Controller IC
utilizing CMOS Technology specially designed to
display characters, numerals, and symbols. PT6302
provides 35 dot matrix, 2 additional segment drivers
and 16 grid drivers. 248 types of character data
(CGROM), 8 types of character data (CGRAM), 16
display digits x 2 bits symbol data, 16 display digits x 8
bits register for character data display and 2 general
output bits for static operation are provided. Pin
assignments and application circuit are optimized for
easy PCB layout and cost saving advantages.
FEATURES
•
•
•
•
•
CMOS technology
Logic power supply: VDD=3.3V±10% or 5.0V±10%
VFD drive power supply: VEE=-20V to -35V
Built-in oscillation circuit (External RC)
One-byte instruction execution (not including Data
Write to RAM)
•
Microcontroller interface
•
Display contents:
- Character generator ROM (CGROM): 5x7 Dots
(248 Character data types)
- Character generator RAM (CGRAM): 5x7 Dots (8
Character data types)
- Additional data RAM (ADRAM): 16 Display digits
x 2 Bits (Symbol data)
- Data control RAM (DCRAM): 16 Display digits x 8
Bits (Character data display register)
- General output port: 2 bits (Static operation)
•
Display control function:
- Display digits: 9 to 16 digits
- Display duty (Contrast adjustment): 8 stages
- All display lights: ON/OFF mode
APPLICATIONS
•
Microcontroller peripheral device
•
Audio/Video equipment
BLOCK DIAGRAM
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PT6302
ORDER INFORMATION
Valid Part Number
PT6302LQ-001
PT6302LQ-002
PT6302LQ-003
PT6302LQ-005
PT6302LQ-006
PT6302LQ-007
Package Type
64 pins, LQFP
64 pins, LQFP
64 pins, LQFP
64 pins, LQFP
64 pins, LQFP
64 pins, LQFP
Top Code
PT6302LQ-001
PT6302LQ-002
PT6302LQ-003
PT6302LQ-005
PT6302LQ-006
PT6302LQ-007
PIN CONFIGURATION
PIN DESCRIPTION
Pin Name
SG5 to SG35
SG4 to SG1
GR1 to GR16
VEE
VSS
OSCI
OSCO
RSTB
CSB
CLKB
DIN
VDD
P1 to P2
AD2 to AD1
V2.1
I/O
O
O
-
-
I
O
I
I
I
I
-
O
O
Description
Segment driver output pin
Grid driver output pin
Power supply
Ground pin
Oscillator input pin
Oscillator output pin
Reset input pin
When this pin is set to "LOW", all functions are initialized.
Chip select input pin
When this pin is set to "High" Level, the serial data transfer is
disabled.
Shift clock input pin
The serial data is shifted at the rising edge of CLKB.
Serial data input pin
Positive power supply
General purpose output pin
Segment driver output pin
3
Pin No.
1 ~ 31
64 ~ 61
32 ~ 47
48
49
50
51
52
53
54
55
56
57 ~ 58
59 ~ 60
August 2010
PT6302
FUNCTION DESCRIPTION
OSCILLATION CIRCUIT
An oscillation circuit may be constructed by connecting external Resistor (R1) and Capacitor (C1) between the oscillator
pins -- OSCO and OSCI. The RC time constant depends on the value of VDD voltage used. The target oscillation
frequency is 2MHz. Please refer to the diagram below.
RESET FUNCTION
The Reset Function is enabled when the RSTB Pin is set to "Low" Level. All functions are initialized. The initial status of
the various functions is given below:
1. Address of each RAM: Address "00"H
2. Data of each RAM: All contents are undefined.
3. General Output Ports: All General Output Ports are set to "LOW".
4. Display Digit: 16 Digits
5. Contrast Adjustment: 8/16
6. All Display Lights: OFF Mode
7. Segment Output: All Segment Outputs are set to "LOW".
8. AD Output: All AD Outputs are set to "LOW".
The RSTB Pin may be connected to either the microcontroller or an external Resistor and capacitor. For an external RC
connection, please refer to the diagram below.
V2.1
5
August 2010
Embedded System
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EEWORLD
