isd1000a ETC-unknow, isd1000a Datasheet - Page 17

• Manufacturer Part Number: isd1000a
• Description: Single-chip Voice Record/playback Devices 16- And 20-second Durations
• Manufacturer: ETC-unknow

NOTE:
Product Data Sheets
APPLICATION EXAMPLE – DESIGN SCHEMATIC
APPLICATION EXAMPLE – BASIC DEVICE CONTROL
Control Step
1
2
3
4
If desired, pin 18 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.
V
CC
PLAYBACK/RECORD
CHIP ENABLE
POWER DOWN
Power up chip and select record/playback mode
Set message address for record/playback
Begin playback/record
End cycle
Function
V
SS
10
23
24
27
25
26
1
2
3
4
5
6
9
A0
A1
A2
A3
A4
A5
A6
A7
CE
PD
P/R
EOM
XCLK
ISD1016A/1020A
ANA OUT
MIC REF
AUX IN
ANA IN
AGC
V
V
V
V
SP+
SP–
MIC
470 K
SSA
CCD
CCA
SSD
R 2
28
16
12
13
14
15
11
20
21
18
17
19
0.1 F
(Note)
C6
5.1 K
4.7 F
1. PD = LOW
2. P/R = As desired
Set addresses A0–A7
CE = Pulsed LOW (Playback)
CE = Held LOW (Record)
CE = HIGH and EOM reached
C 2
R
1 K
5
R 1
V
CC
220 F
V
C 4
CC
C7
0.1 F
0.1 F
10 K
C 3
R 3
Action
MICROPHONE
0.1 F
ELECTRET
C 1
SPEAKER
22 F
C8
16
ISD1000A Series
Mic Ref
10 K
0.1 F
C 5
R 4
1–17
1