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PDF Apr-00 Data sheet ( Hoja de datos )
| Número de pieza | Apr-00 | |
| Descripción | SINGLE-CHIP VOICE RECORDING & PLAYBACK DEVICE FOR SINGLE 60 SECOND MESSAGE | |
| Fabricantes | Apuls Intergrated Circuits | |
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INTEGRATED CIRCUITS INC.
APR9600
Single-Chip Voice Recording & Playback Device
60-Second Duration
Features
• Single-chip, high-quality voice recording & playback
solution
- No external ICs required
- Minimum external components
• Non-volatile Flash memory technology
- No battery backup required
• User-Selectable messaging options
- Random access of multiple fixed-duration messages
- Sequential access of multiple variable-duration
messages
• User-friendly, easy-to-use operation
- Programming & development systems not required
- Level-activated recording & edge-activated play
back switches
• Low power consumption
- Operating current: 25 mA typical
- Standby current: 1 uA typical
- Automatic power-down
• Chip Enable pin for simple message expansion
General Description
The APR9600 devi ce offers true single-chip voice recording,
non-volatile storage, and playback capability for 40 to 60 sec-
onds. The device supports both random and sequential
access of multiple messages. Sample rates asire user-select-
able, allowing designers to customize their design for unique
quality and storage time needs. Integrated output amplifier,
microphone amplifier, and AGC circuits greatly mplify sys-
tem design. the device is ideal for use in portable voice
recorders, toys, and many other consumer and industrial
applications.
APLUS integrated achieves these high levels of storage capa-
bility by using its proprietary analog/multilevel storage tech-
nology implemented in an advanced Flash non-volatile
memory process, where each memory cell can store 256 volt-
age levels. This technology enables the APR9600 device to
reproduce voice signals in their natural form. It eliminates the
need for encoding and compression, which often introduce
distortion.
Pinout Diagram
Figure 1 APR9600 Pinout Diagram
/M 1_M essage
/M/M22__NNeexxtt
/M/M33
/M/M44
/M/M55
/M/M66
OOssccR
//MM77__EEND
/M/M8_Oppttioionn
/B/Buussyy
BBEE
VVSSSSDD
VVSSSSAA
SSPP++
1
2
3
4
5
6
7
8
9
10
1111
12
111434
2288
2277
2266
2255
2244
2233
2222
2211
2200
1199
1188
1177
1116565
VCCD
//RREE/RE
EExxttCClkI K
MMSSEELL22
MMSSEELL11
/C/ CEE
/S/ Strtorboeb e
AAnnaa__OOuut t
AAnnaa__InI n
AAGGCC
MMicicRReef f
MMici Icnl n
VVCCCCAA
SSPP- -
Update:2002/11/05
Page 1
1 page  
APLUS
APR9600
Function Description of Playback in Tape Mode using
the Normal Option
On power-up, the device is ready to record or play back,
starting at the first address in the memory array. Before you
can begin playback, the /CE input must be set to low to
enable the device and /RE must be set to high to disable
recording and enable playback. The first high to low going
pulse of the /M1_Message pin initiates playback from the
beginning of the current message; on power up the first mes-
sage is the current message. When the /M1_Message pin
pulses low the second time, playback of the current message
stops immediately. When the /M1_Message pin pulses low a
third time, playback of the current message starts again from
its beginning. If you hold the /M1_Message pin low continu-
ously the same message will play continuously in a looping
fashion. A 1,530 ms period of silence is inserted during loop-
ing as an indicator to the user of the transition between the
beginning and end of the message.
Note that in auto rewind mode the device always rewinds to
the beginning of the current message. To listen to a subse-
quent message the device must be fast forwarded past the
current message to the next message. This function is
accomplished by toggling the /M2_Next pin from high to low.
The pulse must be low for least 400 cycles of the sampling
clock. After the device is incremented to the desired message
the user can initiate playback of the message with the play-
back sequence described above. A special case exists when
the /M2_Next pin goes low during playback. Playback of the
current message will stop, the device will beep, advance to
the next message and initiate playback of the next message.
(Note that if /M2_Next goes low when not in playback mode,
the device will prepare to play the next message, but will not
actually initiate playback).
If the /CE pin goes low during playback, playback of the cur-
rent message will stop, the device will beep, reset to the
beginning of the first message, and wait for a subsequent
playback command.
When you reach the end of the memory array, any subse-
quent pulsing of /M1_Message or /M2_Next will only result in
a double beep. To proceed from this state the user must
rewind the device to the beginning of the memory array. This
can be accomplished by toggling the /CE pin low or cycling
power.
Functional Description of Recording in Tape Mode using
Auto Rewind Option
On power-up, the device is ready to record or play back,
starting at the first address in the memory array. Before you
can begin recording, the /CE input must be set to low to
enable the device and /RE must be set to low to enable
recording. On a falling edge of the /M1_Message pin the
device will beep once and initiate recording. A subsequent
rising edge on the /M1_Message pin will stop recording and
insert a single beep. If the /M1_Message pin is held low
beyond the end of the available memory, recording stops
automatically, and two beeps are inserted; regardless of the
state of the /M1_Message pin. The device returns to the
standby mode when the /M1_Message pin is returned high.
A subsequent falling edge on the /M1_Message pin starts a
new record operation in the memory array immediately fol-
lowing the last recorded message, thus preserving the last
recorded message.
To record over all previous messages you must pulse the /CE
pin low once to reset the device to the beginning of the first
message. You can then initiate a record sequence, as
described above, to record a new message. The most
recently recorded message will become the last recorded
message and all previously recorded messages following this
message will become inaccessible.
If you wish to preserve any current messages it is recom-
mend that Auto Rewind option be used instead of Normal
option. If Normal option is necessary the following sequence
can be used. To preserve current messages you must fast
forward past the messages you want to keep before you can
record a new message. To fast forward when using the Nor-
mal option you must switch to play mode and listen to mes-
sages sequentially until you arrive at the beginning of the
message you wish to overwrite. At this stage you should
switch back to record mode and overwrite the desired mes-
sage. The most recently recorded message will become the
last recorded message and all previously recorded messages
following this message will become inaccessible. All inputs,
except /CE are ignored during recording.
Functional Description of Playback in Tape Mode using
Auto Rewind Option
On power-up, or after a low to high transition on /RE the
device is ready to record or play back starting at the first
address in the memory array. Before you can begin playback
of messages, the /CE input must be set to low to enable the
device and /RE must be set to high to enable playback. The
first high to low going pulse of the /M1_Message pin initiates
playback from the beginning of the current message. When
the /M1_Message pin pulses from high to low a second time,
playback of the current message stops immediately. When
the /M1_Message pin pulses from high to low a third time,
playback of the next message starts again from the begin-
ning. If you hold the /M1_Message pin low continuously, the
current message and subsequent messages play until the
one of the following conditions is met: the end of the memory
array is reached, the last message is reached, the
/M1_message pin is released. If the last recorded message
has already played, any further transitions on the
/M1_Message pin will initiate a double beep for warning and
the /M7_END pin will go low. To exit this state you must pulse
the /CE pin low once during standby to reset the pointer to
the beginning of the first message.
Single-Chip Voice Recording & Playback Device for Multiple 40- to 60-Second Messages
Page 5
5 Page 
APLUS
Pin Descriptions
APR9600
Pin Name
SP+
SP-
VCCA
MicIn
MicRef
AGC
Ana_In
Ana_Out
/Strobe
Pin Functionality in Random
No. Access Mode
Functionality in Tape Mode
Normal Option
Auto Rewind Option
14 Positive Output for Speaker
Same as Mode 1.
Connection: Should be con-
nected to the positive terminal
of the output speaker. Total
output power is.1 W into 16
ohms. Do not use speaker
loads lower than 8 ohms or
device damage may result.
15 Negative Output for Speaker Same as Mode 1.
Connection: Should be con-
nected to the negative terminal
of the output speaker.
16 Analog Positive Power Supply: Same as Mode 1.
This connection supplies
power for on-chip analog cir-
cuitry. Should be connected to
the positive supply rail as out-
lined in the reference schemat-
ics.
17 Microphone Input: Should be Same as Mode 1.
connected to the microphone
input as outlined in the refer-
ence schematics.
18 Microphone GND Reference: Same as Mode 1.
Should be connected to the
microphone input as outlined
in the reference schematics.
Same as Mode 1.
Same as Mode 1.
Same as Mode 1.
Same as Mode 1.
Same as Mode 1.
19 Automatic Gain Control Attack Same as Mode 1.
Time: The time constant of the
RC network connected to this
input determines the AGC
attack time. The attack time is
defined as the delay present
before the AGC circuit begins
to adjust gain. The values
shown in the reference sche-
matics have been optimized
for voice applications.
20 Analog In: This pin must be
Same as Mode 1.
connected to Ana_Out through
a 0.1µF Capacitor.
Same as Mode 1.
Same as Mode 1.
21 Analog Out: This pin must be Same as Mode 1.
connected to Ana_In through a
0.1µF Capacitor.
22 Strobe: This pin indicates pro- Same as Mode 1.
gramming of each individual
recording segment. The falling
edge represents the beginning
of the sector. The rising edge
indicates that the sector is half
full.
Same as Mode 1.
Same as Mode 1.
Single-Chip Voice Recording & Playback Device for Multiple 40- to 60-Second Messages
.
Page 11
11 Page | ||
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