اپتوالکترونیک نمایشگر گرافیکی ال سی دی و او ال ای دی

Product Attributes

Introduction

The ST7565R is a single-chip dot matrix LCD driver that connects directly to a microprocessor bus. 8-bit parallel or 4-wire SPI display data sent from the microprocessor is stored in the internal display data RAM, and the chip generates LCD drive signals independently of the microprocessor. Since the ST7565R contains a 65×132-bit display data RAM with a one-to-one correspondence between LCD panel pixels and internal RAM bits, the chip enables a high degree of display freedom. With 65 common output circuits and 132 segment output circuits, a single chip can drive a 65×132-dot display (capable of showing 8-column × 4-row 16×16-dot matrix Chinese font characters). Features an independent boost reference voltage input (VDD2). Built-in high-accuracy voltage regulator circuit with electronic volume function for contrast control. Thermal gradient: –0.05%/°C. Built-in voltage follower circuit for LCD driving. Built-in R-C oscillator circuit with external clock support. Ultra-low power consumption: 60μA for die (using internal power supply). Conditions: VDD – VSS = VDD2 – VSS = 3.0V, boost ratio = 4, V0 – VSS = 11.0V, display off, normal mode selected. Logic supply: VDD – VSS = 2.4V ~ 3.3V. Analog supply (boost reference voltage): VDD2 – VSS = 2.4V ~ 3.3V. Maximum boost voltage limit VOUT = 13.5V. LCD drive supply: V0 – VSS = 3.0V ~ 12.0V. Wide operating temperature range: –30 ~ 85°C. Package type: COG only. The chip is not designed to withstand light or radiation. Supports LCD module sizes up to 2 inches. The ST7565R minimizes power consumption because read/write operations to the display data RAM require no external operating clock. Furthermore, since each chip integrates a low-power LCD driver supply, resistors for LCD driver supply voltage adjustment, and a display clock CR oscillator circuit, the ST7565R enables high-performance portable display systems with minimal components and lowest possible power consumption.

Features

• Direct display of RAM data via display data RAM.
• RAM capacity: 65 × 132 = 8580 bits.
• Selectable display duty ratio via pin selection: 1/65 duty (65 commons × 132 segments), 1/49 duty (49 commons × 132 segments), 1/33 duty (33 commons × 132 segments), 1/55 duty (55 commons × 132 segments), 1/53 duty (53 commons × 132 segments).
• High-speed 8-bit MPU interface: ST7565R can be directly connected to 80x86 series MPU and 6800 series MPU. Serial interface (SPI-4) is also supported.
• Rich command functions: display data read/write, display on/off, normal/reverse display mode, page address setting, display start line setting, column address setting, status read, all-points-on/off, LCD bias setting, electronic volume, read/modify/write, segment driver direction selection, power saving mode, common output state selection, V0 voltage regulation internal resistor ratio setting.
• Built-in analog power supply circuit for LCD driving: booster, regulator, and follower.
• Built-in booster circuit: supports 2×, 3×, 4×, 5×, and 6× boost ratios.