ISD2500 Datasheet, PDF (22/28 Pages) List of Unclassifed Manufacturers – Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations

ISD2500 Series
Product Data Sheets
ISD2500 APPLICATION EXAMPLE – DESIGN SCHEMATIC
V_CC
V_SS
R4
100 KΩ
CHIP ENABLE
POWER DOWN
PLAYBACK/RECORD
-1
ISD2500 (PDIP/SOIC)
1 _A0
2 _A1
3 _A2
4 _A3
5 _A4
6 _A5
V_CCD ²⁸
V_CCA ¹⁶
V_SSD
V_SSA
12
13
C6
0.1 µF
7 _A6
SP+ ¹⁴
8 _{A7 (NC*)}
SP– ¹⁵
9 _{A8 (A7*)}
AUX IN ¹¹
10 _{A9 (A8*)}
ANA IN ²⁰
C3
23 _CE
ANA OUT ²¹
0.1 µF
24 _PD
27 _P/R
R6 5.1 KΩ
MIC REF** ¹⁸
25 _EOM
MIC ¹⁷
22 _OVF
26 _XCLK
AGC ¹⁹
V_CC
V_CC
C7
0.1 µF
C8
22 µF
16 Ω
SPEAKER
C1
0.1 µF
R2
470 KΩ
R1
1 KΩ
C2
4.7 µF
R3
10 KΩ
ELECTRET
C4 _MICROPHONE
220 µF
C5
0.1 µF
R5
10 KΩ
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.
APPLICATION EXAMPLE – BASIC DEVICE CONTROL
Control Step
1
2
3A
3B
4A
4B
Function
Power up chip and select Record/Playback mode
Set message address for Record/Playback
Begin Playback
Begin Record
End Playback
End Record
Action
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
1–100 _* Advance information: ISD2532/40/48/64 devices.