PCA8551BTT/AJ Description

The PCA8551BTT/AJ is an ultra-low-power LCD segment driver with 4 backplanes- and 36 segment-driver outputs, with either an I2C- (PCA8551A) or an SPI-bus (PCA8551B) interface. 

PCA8551BTT/AJ Features

• AEC-Q100 grade 2 compliant for automotive applications

• 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 (PCA8551A)

• 5 MHz SPI-bus interface (PCA8551B)

• Internally generated or externally supplied clock signal

PCA8551BTT/AJ Applications

• Displays integrated

  -in a car instrument cluster

  -in a control indicator

• Battery operated applications

• Healthcare devices