ML2502 Datasheet, PDF (1/20 Pages) OKI electronic componets – 128Kbit Analog Cell Storage Flash Memory Revision 8.0 Apr. 01, 1999

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)
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