PCF8578H/1,118

Overview

The PCF8578H/1,118 is a low-power CMOS LCD row and column driver designed for dot matrix graphic displays. It operates on a logic supply voltage ranging from 2.5 V to 6 V and supports a maximum LCD supply voltage of 9 V. The device features 40 configurable outputs supporting multiplex rates of 1:8, 1:16, 1:24, or 1:32. It includes 1280 bits of display RAM with auto-incremented addressing and communicates via an I²C bus interface. The component is housed in a 64-LQFP package measuring 10x10 mm and functions within a temperature range of -40°C to 85°C.

Feature Summary

• Single-chip LCD controller and driver capable of driving dot matrix displays with up to 40960 points when cascaded with PCF8579 devices.
• Configurable output architecture allowing flexible row/column ratios (32/8, 24/16, 16/24, or 8/32) for various multiplexing requirements.
• Integrated 1280-bit display RAM with hardware subaddressing and auto-incremented data loading to minimize communication overhead.
• On-chip oscillator requiring only one external resistor, combined with power-on reset functionality for simplified system design.

Applications

• Automotive information systems
• Telecommunications equipment
• Point-of-sale (POS) terminals
• Industrial computer terminals
• Test and measurement instruments

Procurement Notes

Verify component authenticity through authorized NXP channels due to the part's discontinued status. Confirm that the specific ordering suffix matches the required 64-LQFP package configuration. Ensure compatibility with existing I²C bus protocols and check for alternative components if long-term supply continuity is a critical requirement for the target application.

Selection Notes

Select this component for applications requiring independent LCD control or expansion of larger matrix displays using PCF8579 drivers. It is suitable for systems needing flexible multiplex rates and minimal microcontroller intervention due to built-in display memory management. Consider the 64-pin LQFP footprint constraints and verify that the I²C address allocation fits within the system's available address space.

Part Context

This part belongs to the PCF8578 family of LCD drivers, specifically the H variant indicating the LQFP package type. It is designed to work in conjunction with the PCF8579 column driver to form a comprehensive chipset for high-density dot matrix graphics. The designation /1,118 refers to the specific reel packaging format used for surface-mount assembly.

Replacement Considerations

• PCF8578HT/1,118
• PCF8578T/1,118