ML22Q625-NNNTBZ0BX

Audio Special Purpose Overview

The ML22Q625-NNNTBZ0BX is a 4-channel speech synthesis LSI from Rohm Semiconductor (LAPIS) featuring built-in 16 Mbit Flash memory. It operates on a supply voltage of 2.7V to 5.5V and supports an operating temperature range of -40°C to 70°C. The device utilizes a clock synchronous serial interface (SPI-compatible) for communication with a microcontroller. It is housed in a 32-TQFP package (7x7 mm). Unlike the ML22Q665, this specific model is generally classified as Industrial Grade and does not hold AEC-Q100 automotive qualification.

Audio Special Purpose Feature Summary

• Built-in 16 Mbit Flash memory for voice data storage
• 4-channel internal mixing capability
• Clock synchronous serial interface (SPI)
• HQ-ADPCM audio decoding with 16-bit D/A converter
• Integrated 1.0W Class AB/D mono speaker amplifier
• Industrial grade (-40°C to 70°C)
• Flash memory rewriteable via MCU

Audio Special Purpose Applications

• Voice guidance systems requiring long playback times
• Industrial equipment announcements
• Consumer electronics voice output
• Applications where flash content needs to be updated by the host MCU

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix NNNTBZ0BX against the manufacturer's official documentation to confirm package type (TQFP32) and tape/reel specifications. Note that while some distributors list it as 'Recommended' or 'Active', ensure stock availability aligns with the manufacturer's standard lead times (typically 14 weeks).

Audio Special Purpose Selection Notes

Select this component when a multi-channel speech synthesis solution with integrated flash memory and direct speaker drive capability is required. Confirm that the system design accommodates the 32-TQFP footprint and that the host controller supports the necessary clock synchronous serial protocol. Do not select this part if Automotive Grade (AEC-Q100) certification is a mandatory requirement; consider the ML22Q5xx series for automotive applications instead.

Audio Special Purpose Part Context

This part belongs to the ML22Q6xx series of speech synthesis LSIs from Rohm Semiconductor. These devices integrate high-quality audio playback functions, including HQ-ADPCM decoding, DAC, low-pass filter, and power amplifier, simplifying system design for voice guidance applications by reducing external component count.