isd18b12 Winbond Electronics Corp America, isd18b12 Datasheet - Page 8

• Manufacturer Part Number: isd18b12
• Description: Single-chip, Single-message Voice Record/playback Device 6- To 12-seconds Duration
• Manufacturer: Winbond Electronics Corp America

5.5. Sound Effect (
•
5.6. Microphone amplifier gain
•
5.7. Playback (supersedes Record) Operation :
•
•
5.8. Feed-Through mode Operation :
•
•
•
5.9.
•
•
5.10.
•
•
5.11. Rosc Operation :
•
•
5.12. Speaker Outputs
•
Beeping feature for recording. Once active, one-beep indicates the start of recording and two-beep
represents the end of recording.
Two external resistors, R
incoming signal.
Playback takes precedence over the Recording operation.
If either
playback of the just-recorded message performs accordingly.
As
If either
will be recorded into memory while the Feed-Through mode is still on.
After
play the recorded message. Once playback is completed, the feed-through feature resumes.
Also,
Also,
When the R
When R
faster or slower.
Both SP+ and SP- outputs can be used to drive an 8Ω speaker differentially. They are tri-state while
device is in power down status.
LEDR
LEDP
LEDR
LEDP
FT
FT
LEDR
LEDP
LEDR
LEDP
PlayL
stays on during playback.
stays on during recording.
SP+
SP-
Operation :
OSC
is held Low, the input signal from MICIN will directly transmit to the speaker outputs.
PLAYE
RECE
Operation :
is enabled, activating either
OSC
resistor value is changed during playback, the tone of a recorded message will alter either
pulses Low momentarily at the end of recording.
pulses Low momentarily at the end of playback operation.
T
Deb
SE
varies from 80 KΩ to 160 KΩ, the duration changes from 6 to 12 seconds accordingly.
is triggered or
or
T
r
) Operation :
PLAYL
I
and R
is activated during a recording cycle, the recording immediately ceases and
RECL
O
, are used to adjust the microphone amplifier gain with respect to the
is held Low simultaneously after
PLAYE
- 8 -
T
or
D2
PLAYL
will first disable the feed-through path and
T
D2
FT
is enabled, then input signal
ISD18B12