BU8766FV-E2

Overview

The BU8766FV-E2 is a tone generator LSI designed for cellular phones, featuring an integrated RAM and sequencer to reduce CPU load. It generates triple chords and supports melody data download in C-MIDI format. The device accommodates three master clocks and allows parameter adjustment for chord generation. Users can select waveform parameters between sine wave and special square wave. Control is executed via serial data from the CPU. Key electrical characteristics include a power supply voltage range of 2.2V to 3.6V, with circuit currents varying by operating mode from 0.15µA to 40µA. The IC utilizes a 1kByte SRAM buffer for data storage.

Feature Summary

• Integrated RAM and sequencer functionality reduces host CPU processing load
• Supports triple chord generation with adjustable waveform parameters
• Compatible with C-MIDI format for melody data downloading
• Includes DTMF generating function and serial interface control

Applications

• Cellular phones requiring tone generation capabilities
• Devices needing melody registration during call reception
• Portable electronics utilizing compact MIDI sequencing

Procurement Notes

Verify component authenticity through authorized ROHM Semiconductor distributors or certified partners. Confirm the specific ordering suffix matches project requirements. Check for end-of-life notifications as indicated in public records. Ensure environmental compliance documentation aligns with regional regulations. Validate package integrity upon receipt against standard shipping protocols.

Selection Notes

Select this component when designing audio systems for mobile devices requiring low CPU overhead for tone generation. Consider the available master clock frequencies and required waveform types. Evaluate the serial interface compatibility with the target microcontroller. Assess power consumption profiles across different operating modes to meet battery life targets.

Part Context

This part belongs to the BU8766 series of tone generator LSIs manufactured by ROHM Semiconductor. It is specifically engineered for mobile communication devices. The series integrates memory and sequencing logic to offload audio processing tasks from the main processor. It represents a solution for embedded musical performance features in portable hardware.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional equivalence with other ROHM tone generator models if direct replacement is necessary. Consult manufacturer guidelines for pin-compatible alternatives within the same product family.