PCF8578H/1,157

Overview

The PCF8578H/1,157 is a low-power CMOS LCD row and column driver designed for dot matrix graphic displays. It features a 64-pin LQFP package with dimensions of 10 x 10 mm and a height of 1.40 mm. The device operates on a logic supply voltage ranging from 2.5 V to 6 V and supports a maximum LCD power supply voltage of 9 V. It includes 1280 bits of display RAM and offers configurable row/column ratios such as 32/8, 24/16, 16/24, or 8/32. The component utilizes an I²C bus interface for communication and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Acts as a single-chip LCD controller and driver for dot matrix displays
• Configurable output ratios for rows and columns via internal settings
• Integrated display RAM for data storage and temporary buffering
• I²C bus interface compatible with most microcontrollers

Applications

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

Procurement Notes

Verify the specific ordering suffix and package variant when sourcing, as availability may vary by region. Confirm RoHS compliance status and lead times directly with authorized distributors or NXP Semiconductors representatives prior to procurement. Ensure the selected part matches the required pin configuration and thermal specifications for the target application environment.

Selection Notes

Select this component for applications requiring a dedicated LCD driver with integrated memory and I²C connectivity. Consider the 64-pin LQFP package size for space-constrained designs. Evaluate the need for cascading with PCF8579 units if larger display matrices exceeding the single-chip capacity are required. Verify that the system voltage levels align with the specified 2.5 V to 6 V logic supply range.

Part Context

The PCF8578 series serves as a versatile solution for driving multiplexed LCDs in embedded systems. It is often paired with the PCF8579 column driver to expand display capabilities significantly. This specific model represents the high-temperature industrial grade variant housed in a plastic quad flat package, suitable for robust electronic environments.

Replacement Considerations

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