ST
Sitronix
1. INTRODUCTION
fewest components.
ST7573
132 x 33 Dot Matrix LCD Controller/Driver
ST7573 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. ST7573 contains 132 segment and
33 common driver circuits. This chip is connected directly to a microprocessor, accepts 3-line, 4-line serial peripheral
interface (SPI) or 8-bit parallel interface, display data can stores in an on-chip Display Data RAM (DDRAM) of 132 x 33 bits.
It performs Display Data RAM read/write operation with no external operating clock to minimize power consumption. In
addition, because it contains power supply circuits to drive liquid crystal, it is possible to make a display system with the
2. FEATURES
Single-chip LCD controller & driver
Driver Output Circuits
132 segments / 32 commons + 1 ICON common
132 segments / 16 commons + 1 ICON common
132 segments / 8 commons + 1 ICON common
On-chip Display Data RAM (DDRAM)
Capacity: 132X33=4356 bits
Microprocessor Interface
8-bit parallel bi-directional interface with 6800-series
or 8080-series
4-line SPI (serial peripheral interface) available (only
write operation)
3-line SPI (serial peripheral interface) available
On-chip Low Power Analog Circuit
Embedded Boosters with voltage regulation function
that generates high-accuracy voltage.
Voltage regulation temperature gradient
-0.07%/°
C
Programmable Booster stages: X3,X4.
On-chip electronic contrast control function
Built-in Voltage Follower generates LCD bias
voltages (1/4 to 1/7).
Built-in oscillator
Built-in oscillator requires no external components
(external clock input is also supported)
External RESB (reset) pin
Supply voltage range
V
DD
- V
SS
(Digital): 2.4 to 3.3V (typical);
V
DD2
- V
SS
(Analog): 2.4 to 3.3V (typical).
Display supply voltage range
Programmable voltage (LCD Vop): 8.31V (max)
Temperature range:
-30
to +85 degree
ST7573
6800 , 8080 , 4-Line , 3-Line interface
Ver 1.0b
1/46
2007/07/12
SITRONIX [ SITRONIX TECHNOLOGY CO., LTD. ]
