ST7573
132 x 33 Dot Matrix LCD Controller/Driver
Product Description
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 fewest components.
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%/¢XC
- 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
- VDD - VSS (Digital): 2.4 to 3.3V (typical);
- VDD2 - VSS (Analog): 2.4 to 3.3V (typical).
- Display supply voltage range
- Programmable voltage (LCD Vop): 8.31V (max)
- Temperature range: -30 to +85 degree
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