LC75812PT中文资料Dot-Matrix LCD Controller/Driver, 1/8, 1/9 Duty, with Key Input数据手册ONSEMI规格书

描述 Description

The LC75812PT is 1/8, 1/9 duty dot matrix LCD display controllers/drivers that support the display of characters, numbers, and symbols. In addition to generating dot matrix LCD drive signals based on data transferred serially from a microcontroller, the LC75812PT also provide on-chip character display ROM and RAM to allow display systems to be implemented easily. These products also provide up to 3 general-purpose output ports and incorporate a key scan circuit that accepts input from up to 35 keys to reduce printed circuit board wiring.

特性 Features

• Key input function for up to 35 keys (A key scan is performed only when a key is pressed.)
• Controls and drives a 5x7 or 5x8 dot matrix LCD.
• Supports accessory display segment drive (up to 65 segments)
• Display technique: 1/8 duty 1/4 bias drive (5x7 dots)1/9 duty 1/4 bias drive (5x8 dots)
• Display digits: 13 digits1 line (5x7 dots), 12 digits1 line (5x8 dots)
• Display control memoryCGROM: 240 characters (5x7 or 5x8 dots)CGRAM: 16 characters (5x7 or 5x8 dots)ADRAM: 13x5 bitsDCRAM: 52x8 bits
• Instruction function
• Sleep mode can be used to reduce current drain.
• Built-in display contrast adjustment circuit
• Switching between key scan output and general-purpose output ports can be controlled with instructions.
• PWM output for adjusting the LED backlight brightness
• The frame frequency of the common and segment output waveforms can be controlled by instructions.
• Serial data control of switching between the RC oscillator operating mode and external clock operating mode.
• Independent LCD driver block power supply VLCD
• A voltage detection type reset circuit is provided to initialize the IC and prevent incorrect display.
• The INH pin is provided. This pin turns off the display, disables key scanning, and forces the general-purposeoutput ports to the low level.
• RC oscillator circuit

简介

LC75812PT属于集成电路（IC）的显示驱动器。由制造生产的LC75812PT显示驱动器显示驱动器是一种集成电路 (IC)，可在微处理器 (MPU)、微控制器 (MCU) 或其他电路系统之间提供转换、接口和控制，用于 LCD、LED、OLED、DLP、真空荧光和 AMOLED 等显示器。可能的通信接口和协议包括模拟、BCD、I2C、并行、串行、SMBus、SPI 和 QSPI。