PCF8576T,118

Overview

The PCF8576T,118 is a universal LCD driver designed for low multiplex rates. It interfaces with static or multiplexed LCDs containing up to four backplanes and 40 segments. The device communicates via a two-line bidirectional I2C-bus and includes display RAM with auto-incremented addressing. It supports selectable backplane configurations (static, 2/3/4) and bias settings (static, 1/2, 1/3). Operating temperatures range from -40 °C to +85 °C. The component is housed in a 64-pin LQFP package.

Feature Summary

• Generates drive signals for static or multiplexed LCDs with up to four backplanes and 40 segments
• Features internal LCD bias generation with voltage-follower buffers and separated logic/LCD power supplies
• Minimizes communication overhead through display RAM with auto-incremented addressing and hardware subaddressing
• Supports versatile blinking modes and display memory bank switching in static and duplex drive modes

Applications

• Battery-operated consumer products requiring low power consumption
• Telephone applications utilizing power-saving modes
• Electronic metering devices
• Portable instruments with segment-based displays

Procurement Notes

Verify the specific suffix 'T,118' against the manufacturer's current ordering information to confirm packaging details and availability status. Ensure the selected variant matches the required pin count and thermal specifications for the target application environment. Cross-reference the RoHS compliance status with regional regulatory requirements before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring an I2C interface for driving segment LCDs with low multiplex rates. It is suitable for applications needing flexible backplane configurations and internal bias generation. Consider its wide supply voltage range and low power characteristics for battery-powered designs. Verify compatibility with the host microcontroller's I2C bus speed and voltage levels.

Part Context

The PCF8576 series serves as a peripheral device for interfacing with liquid crystal displays. It functions as a single-chip LCD controller and driver, compatible with most microprocessors and microcontrollers. The family allows for cascading to support larger LCD applications beyond the standard segment limits of a single unit.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.