PCF8551BTT中文资料PCF8551BTT数据手册恩XP规格书

描述 Description

PCF8551 is an ultra low-power LCD segment driver with 4 backplane- and 36segment-driver outputs, with either an I²C- (PCF8551A) or an SPI-bus (PCF8551B)interface. It comprises an internal oscillator, bias generation, instruction decoding, anddisplay controller.

特性 Features

• Single chip LCD controller and driver
• Selectable backplane drive configuration: static, 2, 3, or 4 backplane multiplexing
• Selectable display bias configuration: static, 1⁄2, or 1⁄3
• Internal LCD bias generation with buffers
• 36 segment drives:
• Up to 18 7-segment numeric characters
• Up to 9 14-segment alphanumeric characters
• Any graphics of up to 144 segments/elements
• Auto-incrementing display data and instruction loading
• Versatile blinking modes
• Independent supplies of VLCD and VDD
• Power supply ranges:
• 1.8 V to 5.5 V for VLCD
• 1.8 V to 5.5 V for VDD
• Ultra low-power consumption
• 400 kHz I²C-bus interface (PCF8551A)
• 3 MHz SPI-bus interface (PCF8551B)
• Internally generated or externally supplied clock signal

应用 Application

Metering equipment
Consumer healthcare devices
Battery operated devices
Measuring equipment