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ML2502

RECORD/PLAYBACK LSI with 128Kbit Analog Cell Storage Flash Memory

Oki Electric Industry 

OKI

ML2502 DATA SHEET

RECORD/PLAYBACK LSI with

128Kbit Analog Cell Storage Flash Memory

ML2502

Preliminary

Revision 8.0 Apr. 01, 1999

n GENERAL DESCRIPTION

ML2502 is a record/playback LSI that stores analog signal directly into on-chip Flash memory

(128Kbit Cell) without digital conversion utilizing new Analog Storage technology. Such

unique features as low voltage operability (2.7 ~ 3.3V), no backup requirement and no external

MCU requirement makes the ML2502 an ideal choice for handy Voice Memo, Message Card,

toys and other consumer applications.

n FEATURES

• On-chip 128Kbit Cell Analog Storage Flash Memory

Program/Erase Cycles 10K cycles

Data Retention Period 10 years

• Record/Playback Control via Switch Input

• Phrasing Mode

Single-phrase or Dual-phrase

• Record/Playback Time Length (At 6.4 kHz sampling frequency)

In Dual-phrase Mode Max. ap. 10 sec each (Entire memory area divided into 2)

In Single-phrase Mode Max. ap. 20sec (Using the whole memory area by wiring

REC1 and REC2 pins, PLAY1 and PLAY2 pins together)

• Sampling Frequencies

Selectable from 4.0 kHz, 5.3 kHz, 6.4 kHz

• Built-in Mic. Amplifier with AGC (Auto Gain Control)

• Built-in LPF (Low Pass Filter)

• Built-in Speaker Driver

Allows to use either Piezo or Dynamic speaker by externally setting up an amplitude

ratio.

• On-chip Oscillation Circuit (No requirement for an external oscillator)

• Operating Voltage

2.7V ~ 3.3V

• Operating Temperature -10°C ~ +70°C

• Packaging

30-pin SSOP, Die Form

ML2502 Data Sheet (Revision 8.0)

1

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