ISD1420S Nuvoton Technology Corporation of America, ISD1420S Datasheet - Page 9

• Manufacturer Part Number: ISD1420S
• Description: IC MEM VOICE REC/PLAY 20S SO28
• Manufacturer: Nuvoton Technology Corporation of America
• Series: ISD1400r

Specifications of ISD1420S

• Interface: Pushbutton
• Filter Pass Band: 2.6kHz
• Duration: 20 Sec
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Notes:
PIN NAME
[1]
[2]
REC
The REC signal is debounced for 50 ms on the rising edge to prevent a false retriggering from a push-
button switch.
During playback, if either PLAYE or PLAYL is held LOW during EOM or OVF, the device will still
enter into standby mode and the internal oscillator and timing generator will stop. However, the rising
edge of PLAYE and PLAYL are not debounced and any subsequent falling edge (particularly switch
bounce) present on the input pins will initiate another playback.
PIN NO
27
Record Input : The REC input is an active-LOW record
signal. The device records whenever REC is LOW. This
signal must remain LOW for the duration of the recording.
cycle, the playback immediately ceases and recording
begins.
A record cycle is completed when REC is pulled HIGH or
the memory space is filled.
And end-of-message marker (EOM) is internally recorded,
enabling
appropriately. The device automatically powers down to
standby mode when REC goes HIGH.
REC takes precedence over either playback ( PLAYE or
PLAYL ) signal. If REC is pulled LOW during a playback
a
- 9 -
subsequent
Publication Release Date: November 16, 2005
FUNCTION
playback
ISD1400 SERIES
cycle
to
terminate
Revision 1.3