This datasheet describes the Sitronix ST7571, an LSI driver and controller for 4-level gray scale graphic dot-matrix liquid crystal display systems.
The ST7571 is a Liquid Crystal Display (LCD) Controller/Driver designed to drive 4-level gray scale graphic dot-matrix LCD systems. It connects directly to a microprocessor and supports multiple interface options, including Serial Peripheral Interface (SPI), IIC, and 8-bit parallel display data.
The chip features an on-chip display data RAM with a capacity of 128 x 129 x 2 bits, allowing for efficient data storage without the need for an external operating clock. It includes built-in power supply circuits necessary to drive liquid crystal displays and offers various interface options such as 6800-series or 8080-series parallel interfaces, 4-line SPI, 3-line SPI, and IIC serial interfaces.
| Gray Scale Levels | 4-level (White, Light Gray, Dark Gray, Black) |
|---|---|
| Driver Output Circuits | 128 segment outputs / 128+1 common outputs |
| On-chip Display Data RAM Capacity | 128 x 129 x 2 = 33,024 bits |
| Supply Voltage (VDD1) | 1.8 to 3.3V |
| Supply Voltage (VDD2) | 2.4 to 3.3V |
| Chip Size | 7956um X 780um |
The ST7571 accepts SPI, IIC, or 8-bit parallel display data.
The on-chip Display Data RAM has a capacity of 128 x 129 x 2 bits.
No, it performs DDRAM write operations with no external operating clock to minimize power consumption.