BU9799KV-BZE2

Display Drivers Overview

The BU9799KV-BZE2 is a standard LCD segment driver designed for displays ranging from 80 to 200 segments. It operates within a voltage range of 2.5V to 5.5V for both interface and LCD power supplies. The device features a 1/4 duty driving capability with up to 200 segments, utilizing a 1/3 or 1/2 bias setting. It includes an integrated display data RAM of 50 x 4 bits and supports a 2-wire serial interface. The component is housed in a VQFP64 package and functions within an operating temperature range of -40°C to +85°C.

Display Drivers Feature Summary

• Integrated display data RAM reduces microcomputer load and peripheral components
• Built-in LCD voltage driving circuit eliminates need for external components
• Selectable line or frame inversion driving modes for optimized display performance
• Integrated EVR function allows precise adjustment of LCD contrast levels

Display Drivers Applications

• High-density LCD display designs requiring detailed visual interfaces
• Battery-powered devices benefiting from low power consumption design
• Consumer electronics utilizing 2-wire serial communication protocols
• Applications requiring integrated power-on reset circuits without external parts

Display Drivers Procurement Notes

Verify the specific suffix BZE2 against official ROHM documentation to confirm exact packaging and tape-and-reel specifications. Ensure compatibility with the required 2-wire serial interface protocol. Confirm that the VQFP64 package dimensions align with the target PCB footprint. Check for RoHS compliance status as indicated in the latest datasheet revisions before finalizing procurement orders.

Display Drivers Selection Notes

Select this component when designing systems requiring up to 200 LCD segments with minimal external circuitry. It is suitable for applications needing integrated contrast control via the EVR function. Choose this driver if the system architecture relies on a 2-wire serial interface for data transmission. Ensure the operating environment falls within the specified -40°C to +85°C temperature range for reliable performance.

Display Drivers Part Context

This part belongs to the BU9799KV series of standard LCD segment drivers manufactured by ROHM Semiconductor. The series is engineered to support segment counts from 80 to 280, offering flexibility for various display sizes. The BU9799KV-BZE2 variant specifically targets the upper end of this range with 200 segment outputs. It integrates essential driving functions to simplify system design and reduce overall component count.

Display Drivers Replacement Considerations

The BU9799KV-E2 is a confirmed substitute part number within the same family. Verify pinout compatibility and electrical parameters before substitution. Ensure the replacement part meets the same voltage and temperature requirements.