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ST7577 Scheda tecnica(PDF) 1 Page - Sitronix Technology Co., Ltd. |
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ST7577 Scheda tecnica(HTML) 1 Page - Sitronix Technology Co., Ltd. |
1 / 48 page ST Sitronix ST7577 132 x 39 Dot Matrix LCD Controller/Driver Ver 1.0a 1/48 2008/02/14 1. INTRODUCTION ST7577 is a driver & controller LSI for graphic dot-matrix liquid crystal display systems. ST7577 contains 132 segment and 39 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 39 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. 2. FEATURES Single-chip LCD controller & driver Driver Output Circuits l 132 segments / 39 commons (DTY= ”L”) l 132 segments / 12 commons (DTY= ”H”) On-chip Display Data RAM (DDRAM) l Capacity: 132X39=5148 bits Microprocessor Interface l 8-bit parallel bi-directional interface with 6800-series or 8080-series l 4-line SPI (serial peripheral interface) available (only write operation) l 3-line SPI (serial peripheral interface) available On-chip Low Power Analog Circuit l Embedded Boosters with voltage regulation function that generates high-accuracy voltage (externally V0I / XV0I voltage supply is also supported). l Voltage regulation temperature gradient -0.07%/ °C l Programmable Booster stages: X3,X4. l On-chip electronic contrast control function l Built-in Voltage Follower generates LCD bias voltages (1/4 to 1/7). Built-in oscillator l Built-in oscillator requires no external components (external clock input is also supported) External RESB (reset) pin Supply voltage range l VDD - VSS (Digital): 2.4 to 3.3V (typical); l VDD2 - VSS (Analog): 2.4 to 3.3V (typical). Display supply voltage (V0-VSS) range: 3.0V~8.31V Temperature range: -30 to +85 degree Support LCD Module Size up to 1.4 ” ST7577 6800 , 8080 , 4-Line , 3-Line interface |
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