isd18b12 Winbond Electronics Corp America, isd18b12 Datasheet - Page 9

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

5.13. TryMe Special Operation :
This is a special feature. When
The enabling and disabling of this feature is merely permitted while the device is in power down status. Once
device performs a combination of the following 3 operations sequentially: Record a new message and
automatic playback the just-recorded message once, then delete the recorded message. Internal pull-up
exists.
The details of each operation are described as follows:
a)
b)
c)
After completion of this TryMe operation, the device returns to standby state automatically. Once playback
operation starts, any input on other controls is illegal.
As a summary, the TryMe mode starts in the following conditions:
Under no circumstances, while this special operation is in progress, neither the power is disturbed
nor any change of state on other control pins are permitted. Otherwise, it may cause the device
becoming malfunction.
TryMe
Recording:
•
•
Playback:
•
•
Erasure:
•
Fig 6: TryMe function via (
Pin
Logic Level
is set, trigger on either
The recording behavior follows the characteristics of the selected record pin,
While recording, the
Upon completion of recording, the device automatic plays the just-recorded message once and
stops. During this operation, change of state on any control pins is prohibited.
While playback, the
Upon completion of playback, the device will involuntary delete the recorded message. During this
operation, change of state on any control pins is banned.
TryMe
1
1
LEDP
LEDR
TryMe
RECL
TryMe
RECL
is on if an LED is connected appropriately.
is on if an LED is connected appropriately.
or
0
1
+
is High, TryMe is active. When
RECL
RECE
)
will initiate the TryMe operation sequence. While active, the
- 9 -
RECE
1
0
Publication Release Date: August 31, 2007
TryMe
is Low, TryMe is disabled.
RECL
ISD18B12
or
RECE
Revision A1
.