isd1900 Winbond Electronics Corp America, isd1900 Datasheet - Page 15

• Manufacturer Part Number: isd1900
• Description: Single-chip, Multiple-message Voice Record/playback Device 10.6- To 32-seconds Duration
• Manufacturer: Winbond Electronics Corp America

6.3. O
6.3.1. Rosc Operation
• When the R
• When R
• If the ground side of R
• The operation will resume when the resistor is connected back to ground.
6.3.2.
•
6.3.3. Feed-Through mode Operation
• As
• After
• If
• During an operation, activating the
6.3.4. Power-On Playback Operation
• If
accordingly.
faster or slower.
be sufficiently greater than debounce time.
transmitted to the speaker outputs. Under this mode, Mic- pin is not used (must be floated).
Feed-Through path remains on.
recorded message. Once playback completes, FT path will be resumed.
LED
Fig. 9: Playback Operation under FMC mode
FT
PlayE
THER
FT
LED
turns on during recording. Also,
FT
Norm/Mode
is already enabled, activating either
M1 ~ M4
OSC
is held Low, the Mic+ pin will be reconfigured as AnaIn input then the AnaIn signal will be
is kept at Low during power turns on, the device plays message once, then powers down.
O
Operation
FM3
FM2
FM1
is enabled, If
R / P
LED
Sp+
Sp-
PERATIONS
resistor value is changed during playback, the tone of a recorded message will alter either
OSC
varies from 53.3 KΩ to 160 KΩ, the sampling frequency changes from 12 to 4 kHz
T
T
FSet
Deb
OSC
REC
resistor is floated or tied to V
Start
is triggered, then AnaIn signal will be recorded into memory while the
T
Deb
FT
T
Stop
Settle2
LED
pin is not allowed.
PlayE
pulses Low at the end of message. The Low period must
- 15 -
T
Start
Deb
or
CC
PlayL
Publication Release Date: September 11, 2007
, then the current operation will be freezed.
will first disable the FT path then play the
End of Message
T
EOM
ISD1916
Revision 0