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
•
•
•
•
ML2502 Data Sheet (Revision 8.0)
1
OKI [ OKI ELECTRONIC COMPONETS ]
