1. General description
PCA8561 is an ultra low-power LCD segment driver with 4 backplane- and 18
segment-driver outputs, with either an I2C- or an SPI-bus interface. It comprises an
internal oscillator, bias generation, instruction decoding, and display controller.
For a selection of NXP LCD segment drivers, see Table 24 on page 45.
2. Features and benefits
 AEC-Q100 grade 2 (up to 105 C) 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
 18 segment drives:
 Up to 9 7-segment numeric characters
 Up to 4 14-segment alphanumeric characters
 Any graphics of up to 72 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 (PCA8561AHN)
 5 MHz SPI-bus interface (PCA8561BHN)
 Internally generated or externally supplied clock signal
 Tiny package: HVQFN32, 5 mm  5 mm
3. Applications
 Small displays integrated
 in a car instrument cluster
 in a control knob
 Battery operated applications
 Healthcare devices