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.

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