1. General description
PCF8553 is an ultra low-power LCD segment driver with 4 backplane- and 40
segment-driver outputs, with either an I
2
C- 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
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
40 segment drives:
Up to 20 7-segment numeric characters
Up to 10 14-segment alphanumeric characters
Any graphics of up to 160 segments/elements
Auto-incrementing display data and instruction loading
Versatile blinking modes
Independent supplies of V
LCD
and V
DD
Power supply ranges:
1.8 V to 5.5 V for V
LCD
1.8 V to 5.5 V for V
DD
Ultra low-power consumption
400 kHz I
2
C-bus interface
5 MHz SPI-bus interface
Internally generated or externally supplied clock signal
3. Applications
Metering equipment
Small appliances
Consumer healthcare devices
Battery operated devices
Measuring equipment
PCF8553
40 × 4 LCD segment driver
Rev. 3 — 27 March 2015 Product data sheet
