¡ Semiconductor

ML2500

1/7

FEDL2500-01

¡ Semiconductor

ML2500

Analog-Storage Single-chip Record/Playback LSI with 1M Bit-Cell Flash Memory

This document contains minimum specifications. For full specifications, please contact your

nearest Oki office or representative.

GENERAL DESCRIPTION

Thanks to newly developed Analog Multi-Level Storage technology, ML2500 stores non-

compressed analog source signal directly into on-chip 1M Bit-Cell Flash memory. The result is

superb sound quality without noise and distortions introduced through coding/decoding, and

impressive long-time record/playback capability up to 256 sec. ML2500 is fully controllable by

an external MCU via the industry's standard Serial Peripheral Interface.

In addition, no backup requirement and low operating voltage (2.7 to 3.3 V) make the LSI an ideal

choice for compact, handy and portable terminals. ML2500 is a true shingle-chip solution to

record/playback subsystem for use with today's size-critical electronic products.

FEATURES

• On-chip non-volatile 1M bit-cell Flash memory

Program/Erase Cycles

: 10,000 cycles

Data Retention

: 10 years

• MCU Interface

Serial Peripheral Interface (SPI; Mode 0)

• Record/Playback Time Length (With the int. Osc. or ext. clock at 8.192 MHz)

ap. 160 sec (At fsam = 6.4 kHz)

ap. 190 sec (At fsam = 5.3 kHz)

ap. 256 sec (At fsam = 4.0 kHz)

• Selectable Sampling Frequencies

4.0 kHz, 5.3 kHz, 6.4 kHz

• Maximum number of recording phrases: 320 phrases

• Phrase Control

Fully controllable with user-definable Start, Stop addresses

• Built-in LPF/Smoothing Filter (LPF attenuation –40dB/oct)

• Built-in Oscillation Circuit (8.192 MHz), No oscillator required

Optional external clock input (Clock Frequency 4.0 MHz to 8.192 MHz)

• Power Supply

: 2.7 to 3.3 V

• Operating Temperature:

–10 to +70

°C (guaranteed for both function and voice quality)

–40 to +85

°C (guaranteed for function only) *Notice

*Notice

The voice quality can deteriorate at temperatures beyond the range of –10 to +70

°C.

DC and AC characteristics in this data sheet are specified for –10 to +70

°C operating

temperature range.

• Package:

32-pin Plastic TSOP (TSOPI32-P-814-0.50-1K) (Product name: ML2500TA)

FEDL2500-01

This version: Jul. 2000

Previous version: Jun. 1999