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ST7571 Folha de dados(PDF) 1 Page - Sitronix Technology Co., Ltd. |
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ST7571 Folha de dados(HTML) 1 Page - Sitronix Technology Co., Ltd. |
1 / 76 page Sitronix ST7571 4 Gray Scale Dot Matrix LCD Controller/Driver Ver 1.5a 1/76 2009/7/21 1. INTRODUCTION ST7571 is a driver & controller LSI for 4-level gray scale graphic dot-matrix liquid crystal display systems. This chip is connected directly to a microprocessor, accepts Serial Peripheral Interface (SPI), I 2C or 8-bit parallel display data and stores in an on-chip display data RAM of 128 x 129 x 2 bits. It performs display data RAM write operation with no external operating clock to minimize power consumption. In addition, because it contains power supply circuits necessary to drive liquid crystal, it is possible to make a display system with the fewest components. 2. FEATURES 4-level (White, Light Gray, Dark Gray, Black) Gray Scale Display with PWM Method DDRAM Data [ 2n : 2n+1 ] 2n 2n + 1 Gray Scale 0 0 White 0 1 Light gray 1 0 Dark gray 1 1 Black (Accessible column address, n = 0, 1, 2, ……, 125, 126, 127) Driver Output Circuits - 128 segment outputs / 128+1 common outputs Applicable Duty Ratios - Various partial display - Partial window moving & data scrolling On-chip Display Data RAM - Capacity: 128 x 129 x 2= 33,024 bits Microprocessor Interface - 8-bit parallel interface supports 6800-series or 8080-series MCU - 4-line serial interface (4-Line SPI) - 3-line serial interface (3-Line 8-bit SPI) - I 2C serial interface On-chip Low Power Analog Circuits - On-chip oscillator circuit - Build-in Voltage converter ( x8) - Voltage regulator (temperature gradient: -0.13%/ °C) - On-chip contrast control function (64 steps x 8) - Voltage follower (LCD bias : 1/5 to 1/12) Operating Voltage Range - Digital Power (VDD1): 1.8V~3.3V (cover 1.7V~3.4V) - Analog Power (VDD2, VDD3): 2.7V~3.3V (cover 2.6V~3.4V) Package Type - Application for COG ST7571 6800 , 8080 , 4-Line , 3-Line interface (without I 2C interface) ST7571i I 2C interface Sitronix Technology Corp. reserves the right to change the contents in this document without prior notice. |
Nº de peça semelhante - ST7571 |
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Descrição semelhante - ST7571 |
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