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Product Data Sheets
ISD2500 Series
-1
SSD
SSA
A0
A1
A2
A3
A4
A5
A6
A7
(NC*)
A8
(A7*)
A9
(A8*)
CE
PD
P/R
EOM
OVF
XCLK
V
V
V
V
SP+
SP–
AUX IN
ANA IN
ANA OUT
MIC REF
**
MIC
AGC
CCD
CCA
C3
16
Ω
SPEAKER
1
2
3
4
5
6
7
8
9
10
23
24
27
25
22
26
28
16
12
13
14
15
11
20
21
18
17
19
ELECTRET
MICROPHONE
0.1
µF
CC
V
CC
V
22
µF
SS
V
PLAYBACK/RECORD
POWER DOWN
CHIP ENABLE
ISD2500 (PDIP/SOIC)
0.1
µF
0.1
µF
C5
0.1
µF
C1
0.1
µF
CC
V
C2
4.7
µF
470 K
Ω
R2
1 K
Ω
R1
10 K
Ω
R3
C4
220
µF
100 K
Ω
R4
C6
C7
C8
5.1 K
Ω
R6
10 K
Ω
R5
ISD2500 APPLICATION EXAMPLE – DESIGN SCHEMATIC
APPLICATION EXAMPLE – BASIC DEVICE CONTROL
Control Step
Function
Action
1
Power up chip and select Record/Playback mode
1. PD = LOW, 2. P/R = As desired
2
Set message address for Record/Playback
Set addresses A0–A9
3A
Begin Playback
P/R = HIGH, CE = Pulsed LOW
3B
Begin Record
P/R = LOW, CE = LOW
4A
4B
End Playback
End Record
Automatic
PD or CE = HIGH
NOTES:
*
Pin identifications for the ISD2532/40/48/64 devices which differ from those of the ISD2560/75/90/120 devices are
indicated.
** If desired, pin 18 (PDIP package) may be left unconnected (microphone preamplifier noise will be higher). In this case,
pin 18 must not be tied to any other signal or voltage. Additional design example schematics are provided in the
Application Notes and Design Manual in this book.
* Advance information: ISD2532/40/48/64 devices.
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