ISD25120S Nuvoton Technology Corporation of America, ISD25120S Datasheet - Page 32

• Manufacturer Part Number: ISD25120S
• Description: IC VOICE REC/PLAY 120SEC 28-SOIC
• Manufacturer: Nuvoton Technology Corporation of America
• Series: ISD2500r

Specifications of ISD25120S

• Interface: Button/MCU
• Filter Pass Band: 1.7kHz
• Duration: 120 Sec
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

In this simplified block diagram of a microcontroller application, the Push-Button Mode and message
cueing are used. The microcontroller is a 16-pin version with enough port pins for buttons, an LED,
and the ISD2500 series device. The software can be written to use three buttons: one each for play
and record, and one for message selection. Because the microcontroller is interpreting the buttons
and commanding the ISD2500 device, software can be written for any function desired in a particular
application.
Note: Winbond does not recommend connecting address lines directly to a microprocessor bus.
Address lines should be externally latched.
FIGURE 6: ISD2560/75/90/120 APPLICATION EXAMPLE – MICROCONTROLLER/ISD2500
OSC1
OSC2
RESET
V
V
IRQ
DD
SS
MC68HC705K1A
U
1
PB0
PB1
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
S1
RECORD
INTERFACE
S2
PLAY
- 32 -
V
CC
S3
MSG#
T
R
BD
1
RUN
D
1
23
24
26
10
27
25
22
8
1
2
3
4
5
6
7
9
P/R
OEM
OVF
A1
A4
A7
XCLK
A0
A2
A3
A5
A6
A8
A9
CE
PD
ISD2560/75/90/120
ISD2560/75/90/120
U
2
ANA OUT
MIC REF
ANA IN
AUX IN
V
AGC
V
V
V
SP+
MIC
SP-
CCD
CCA
SSD
SSA
16
28
12
13
14
15
11
20
21
18
17
19