LC79401KNE-E

Overview

The LC79401KNE-E is a CMOS LSI dot matrix LCD segment driver manufactured by Sanyo. It processes display data transferred from a controller in a 4-bit parallel format, utilizing an on-chip 80-bit latch to generate LCD drive signals. The device supports bidirectional shift input/output pins for cascade connection, allowing expansion of the bit number. It operates with a logic supply voltage (VDD) ranging from 2.7 to 5.5 V and an LCD section supply voltage (VDD-VEE) from 12 to 32 V, within an operating temperature range of -20 to +85°C. The component is housed in a 100-pin flat plastic package.

Feature Summary

• On-chip LCD drive circuit with 80 bits
• Display duty selection ranging from 1/64 to 1/256
• Supports externally supplied bias voltage
• Input/output pins support further increases in bit number via cascade connection

Applications

• Driving wide-screen LCD panels
• General electronics equipment requiring dot matrix LCD drivers
• Office equipment applications

Procurement Notes

Verify that the specific ordering suffix '-E' corresponds to the exact package variant and environmental specifications documented in the official Sanyo datasheet. Confirm compatibility with the intended controller interface and ensure that the procurement source provides authentic components from Sanyo or authorized distributors. Cross-reference the part number against current product lifecycle status to confirm availability and manufacturing continuity before finalizing orders.

Selection Notes

Select this component when designing systems requiring a dedicated segment driver for large dot matrix displays. Ensure the design accommodates the required external bias voltage generation for the LCD section. Verify that the system controller can support the 4-bit parallel data input format or the bidirectional shift register interface. Consider the thermal management requirements for the specified operating temperature range and power dissipation characteristics.

Part Context

The LC79401KNE-E belongs to the LC794xx series of dot matrix LCD drivers from Sanyo. It is designed to work in conjunction with common drivers such as the LC79431KNE to drive wide-screen LCD panels. This series utilizes CMOS technology to provide efficient operation with low power consumption. The component serves as a key interface between microcontroller units and complex LCD displays in consumer and office electronic devices.

Replacement Considerations

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