PCF8578HT/1,518

Overview

The PCF8578HT/1,518 is a low-power CMOS LCD row and column driver designed for dot matrix graphic displays. It features 40 outputs configurable for various row/column ratios (32/8, 24/16, 16/24, or 8/32) and supports multiplex rates of 1:8, 1:16, 1:24, or 1:32. The device includes 1280-bit RAM for display data storage with automatic incrementing addressing. It operates on a logic supply voltage range of 2.5 V to 6 V and supports a maximum LCD supply voltage of 9 V. Communication is handled via an I²C bus interface.

Feature Summary

• Functions as a single-chip LCD controller and driver capable of driving up to 40960 points when cascaded with PCF8579 devices.
• Integrates 1280-bit RAM with display memory bank switching to minimize communication overhead.
• Features an on-chip oscillator requiring only one external resistor for clock generation.
• Supports power-on reset (POR) resulting in a blank display upon initialization.

Applications

• Automotive information systems
• Telecommunication systems
• Point-of-sale (POS) terminals
• Industrial computer terminals
• Instrumentation

Procurement Notes

Verify the specific suffix '518' against official NXP documentation to confirm the TQFP64 package orientation and reel specifications. Ensure compatibility with system requirements regarding the I²C bus address configuration and the need for external bias resistors. Confirm that the component meets the required temperature range and voltage levels for the target application environment before procurement.

Selection Notes

Select this component for applications requiring flexible row/column configurations and high-density dot matrix display driving. It is suitable for standalone use in small systems or as part of a chipset with PCF8579 drivers for larger displays. Consider the I²C interface compatibility with the host microcontroller and the available pin count for the chosen package type.

Part Context

The PCF8578HT/1,518 belongs to the PCF8578 family of LCD drivers from NXP Semiconductors. This series is designed to provide efficient control for graphic LCDs, offering configurable output ratios and integrated memory. The HT variant typically denotes a specific thermal or packaging characteristic within the product line, often associated with the TQFP64 form factor.

Replacement Considerations

PCF8578H/1,118