PCF8551ATT/AJ 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.
Feature
- 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
- Metering equipment
- Battery operated devices
- Measuring equipment
