PCF8576DT/S400/2Y

Overview

The PCF8576DT/S400/2Y is a universal LCD driver designed for low multiplex rates, manufactured by NXP Semiconductors. It interfaces with liquid crystal displays containing up to four backplanes and forty segments via a two-line bidirectional I2C-bus. The device features selectable backplane drive configurations for static or multiplexed operation and includes internal LCD bias generation with voltage-follower buffers. It supports a wide power supply range from 2 V to 9 V and incorporates a 40 x 4-bit RAM for display data storage with auto-incremented addressing.

Feature Summary

• Interfaces with almost any LCD having low multiplex rates using a standard I2C-bus
• Generates drive signals for static or multiplexed displays with up to four backplanes and forty segments
• Includes internal LCD bias generation with voltage-follower buffers
• Supports versatile blinking modes and display memory bank switching

Applications

• Static or multiplexed LCD applications
• Battery-operated devices requiring low power consumption
• Telephone applications
• Automotive twisted nematic LCDs

Procurement Notes

Verify the specific suffix S400/2Y against official NXP documentation to confirm package type and availability status. Ensure compatibility with existing I2C bus protocols and voltage requirements before integration. Check for end-of-life notices or recommended replacements if sourcing for new designs.

Selection Notes

Select this component for designs requiring direct control of segment-based LCDs without complex microcontroller overhead. It is suitable for applications needing separate logic and LCD supplies. Consider its I2C interface speed and available address space when designing multi-device systems.

Part Context

The PCF8576 series serves as a peripheral device to interface microprocessors with LCDs. It minimizes communication overhead through hardware subaddressing and display memory switching. The device is compatible with TTL/CMOS logic and various microprocessor architectures.

Replacement Considerations

Consult NXP datasheets for direct pin-compatible alternatives or updated series members. Verify functional equivalence regarding I2C protocol support and segment capacity.