ISD2500 ETC1 [List of Unclassifed Manufacturers], ISD2500 Datasheet - Page 22

• Manufacturer Part Number: ISD2500
• Description: Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

-1
ISD2500 Series
ISD2500 APPLICATION EXAMPLE – DESIGN SCHEMATIC
1–100
NOTES:
V
APPLICATION EXAMPLE – BASIC DEVICE CONTROL
CC
Control Step
PLAYBACK/RECORD
3A
3B
4A
4B
1
2
* Pin identifications for the ISD2532/40/48/64 devices which differ from those of the ISD2560/75/90/120 devices are
** If desired, pin 18 (PDIP package) may be left unconnected (microphone preamplifier noise will be higher). In this case,
POWER DOWN
CHIP ENABLE
*
indicated.
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.
Power up chip and select Record/Playback mode
Set message address for Record/Playback
Begin Playback
Begin Record
End Playback
End Record
100 K
R 4
V
SS
Function
10
23
24
27
25
22
26
1
2
3
4
5
6
7
8
9
ISD2500 (PDIP/SOIC)
A0
A1
A2
A3
A4
A5
A6
A7 (NC*)
A8 (A7*)
A9 (A8*)
CE
PD
P/R
EOM
OVF
XCLK
470 K
R 2
MIC REF
ANA OUT
ANA IN
AUX IN
AGC
V
V
V
V
SP+
SP–
MIC
CCD
CCA
SSD
SSA
**
28
16
12
13
14
15
11
20
21
18
17
19
4.7 F
C 2
R 6
0.1 F
C 6
1 K
5.1 K
1. PD = LOW, 2. P/R = As desired
Set addresses A0–A9
P/R = HIGH, CE = Pulsed LOW
P/R = LOW, CE = LOW
Automatic
PD or CE = HIGH
R 1
V
0.1 F
CC
C 3
220 F
C 4
10 K
R 3
0.1 F
V
C 7
CC
Action
MICROPHONE
0.1 F
ELECTRET
C 1
Product Data Sheets
SPEAKER
22 F
C 8
16
0.1 F
10 K
C 5
R 5