PT6321
Fluorescent Display Tube Controller Driver
DESCRIPTION
The PT6321 is a dot matrix fluorescent display tube
controller driver IC which displays characters,
numerics and symbols. Dot matrix fluorescent display
tube drive signals are generated by serial data sent
from a microcontroller. A display system is easily
realized by internal ROM and RAM for character
display.
FEATURES
•
Logic power supply(V
DD
): 3.3V±10% / 5.0V±10%
•
Fluorescent display tube drive power supply (V
DISP
):
20V~60V
•
VFD driver output current (VFD driver output can
directly be connected to the fluorescent display tube.
No pull-down resistor is required.)
- Segment driver (SEG1 to SEG35): -5.0mA
(V
DISP
=60V)
- Segment driver (AD1 to AD4): -10.0mA (V
DISP
=60V)
- Grid driver (COM1 to COM24): -20.0mA (V
DISP
=60V)
•
General output port output current
- Output driver (P1-4):
±1.0mA
(V
DD
=3.3V±10%)
±2.0mA
(V
DD
=5.0V±10%)
•
Content of display
- CGROM: 5x7 dots, 240 types (character data)
- CGRAM: 5x7 dots, 16 types (character data)
- ADRAM: 24 (display digit) x 4 bits (symbol data)
- DCRAM: 24 (display digit) x 8 bits (register for
character data display)
- General output port: 4 bits (static mode)
•
Display control function
- Display digit: 9 to 24 digits
- Display duty (contrast adjustment): 8 stages
- All lights ON/OFF
•
3 interfaces with microcontroller: DA, /CS, /CP(4
interfaces if /RESET is added)
•
1-byte instruction execution (excluding data write to
RAM)
•
Built-in oscillation circuit (external C and R)
80-pin plastic LQFP (LQFP80-P-1414-0.65-K)
Tel: 886-66296288
‧
Fax: 886-29174598
‧
http://www.princeton.com.tw
‧
2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan
PTC [ PRINCETON TECHNOLOGY CORP ]
