ML22120TBZ0B-MX

Specialized ICS Overview

The ROHM Semiconductor ML22120TBZ0B-MX is an automotive-grade speech synthesis LSI designed for Acoustic Vehicle Alert Systems (AVAS) and external vehicle sound generation. It features a 16-bit direct PCM voice synthesis algorithm supporting up to 64 phrases with a maximum external serial flash capacity of 128 Mbit. The device operates on a 2.7 V to 3.6 V supply voltage and supports sampling frequencies of 48.0 kHz, 24.0 kHz, 12.0 kHz, 32.0 kHz, 16.0 kHz, and 8.0 kHz. It includes a 5-band equalizer and fault detection capabilities for communication anomalies with the main microcontroller or external oscillator.

Specialized ICS Feature Summary

• Automotive-grade speech synthesis LSI with 16-bit direct PCM algorithm
• Supports up to 128 Mbit external serial flash memory
• Integrated 5-band equalizer for sound quality adjustment
• Fault detection function for MCU and oscillator communication

Specialized ICS Applications

• Acoustic Vehicle Alert Systems (AVAS)
• Vehicle door alert sounds
• Charging notification sounds

Specialized ICS Procurement Notes

Verify the specific suffix TBZ0B-MX against official ROHM documentation to confirm package type and tape/reel specifications. Ensure the component meets AEC-Q100 qualification requirements for automotive deployment. Cross-reference the 32-TQFP (7x7) package dimensions with the datasheet to validate mechanical fit.

Specialized ICS Selection Notes

Select this model for applications requiring high-quality voice playback in vehicles. The device supports multiple sampling rates and includes equalization features. Ensure the design accommodates the required 128 Mbit external serial flash interface. Verify power supply stability within the 2.7 V to 3.6 V range for reliable operation.

Specialized ICS Part Context

The ML22120 series is part of ROHM's automotive speech synthesis LSI lineup. This specific variant integrates advanced audio processing capabilities tailored for electric and hybrid vehicle safety systems. The component replaces traditional tone generators with flexible, high-fidelity voice playback solutions.

Specialized ICS Replacement Considerations

Consult ROHM official substitution lists for compatible alternatives. Verify pin compatibility and electrical parameters before replacing the ML22120TBZ0B-MX with other models in the ML221xx series.