ISD25120S Nuvoton Technology Corporation of America, ISD25120S Datasheet - Page 11

• 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

Programming
The ISD2500 series is also ideal for playback-only applications, where single or multiple messages
are referenced through buttons, switches, or a microcontroller. Once the desired message
configuration is created, duplicates can easily be generated via a gang programmer.
The ISD2500 series is designed with several built-in Operational Modes that provide maximum
functionality with minimum external components. These modes are described in details as below. The
Operational Modes are accessed via the address pins and mapped beyond the normal message
address range. When the two Most Significant Bits (MSB), A8 and A9, are HIGH, the remaining
address signals are interpreted as mode bits and not as address bits. Therefore, Operational Modes
and direct addressing are not compatible and cannot be used simultaneously.
There are two important considerations for using Operational Modes. First, all operations begin initially
at address 0 of its memory. Later operations can begin at other address locations, depending on the
Operational Mode(s) chosen. In addition, the address pointer is reset to 0 when the device is changed
from record to playback, playback to record (except M6 mode), or when a Power-Down cycle is
executed.
Second, Operational Modes are executed when CE goes LOW. This Operational Mode remains in
effect until the next LOW-going CE signal, at which point the current mode(s) are sampled and
executed.
[1]
[2]
Mode
M0
M1
M2
M3
M4
M5
M6
7.2. O
Besides mode pin needed to be “1”, A8 and A9 pin are also required to be “1” in order to enter into the related operational
mode.
Indicates additional Operational Modes which can be used simultaneously with the given mode.
[1]
PERATIONAL
Message cueing
Delete EOM markers
Not applicable
Looping
Consecutive
addressing
Push-button control
CE level-activated
Function
M
ODES
TABLE 2: OPERATIONAL MODES
Fast-forward through messages
Position EOM marker at the end of
the last message
Reserved
Continuous playback from Address 0
Record/playback multiple
consecutive messages
Allows message pausing
Simplified device interface
- 11 -
Typical Use
Publication Release Date: April 24, 2006
ISD2560/75/90/120
M4, M5, M6
M1, M5, M6
M3, M4, M5, M6
N/A
M0, M1, M5
M0, M1, M3, M4
M0, M1, M3
Jointly Compatible
Revision 1.2
[2]