ISD1200 SERIES
PIN NAME
REC
[1]
PIN NO.
FUNCTION
Record
: The
REC
input is an active-LOW signal. The device
27
records whenever
REC
is LOW. This signal must remain
LOW for the duration of the recording. A record cycle is
completed when
REC
is pulled HIGH or the memory space
is filled up.
REC
takes precedence over either playback (
PLAYE
or
PLAYL
) signal. If
REC
is pulled LOW during a playback
cycle, the playback immediately ceases and recording begins.
An end-of-message (EOM) marker is internally recorded,
enabling a subsequent playback cycle to terminate
appropriately. The device automatically powers down into
standby mode when
REC
goes HIGH.
NC
Notes:
[1]
11
NC
: No connect
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
[2]
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.
-9-
Publication Release Date: April 21, 2005
Revision 1.1
WINBOND [ WINBOND ]
