ML2502

OKI ML2502 RECORD/PLAYBACK LSI with 128Kbit Analog Cell Storage Flash Memory n ML2502 DATA SHEET Preliminary Revision 8.0 Apr. 01, 1999 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 Operating Temperature Packaging 2.7V ~ 3.3V -10°C ~ +70°C 30-pin SSOP, Die Form ML25...