ISD4004-12ME

Product Overview

Category: Integrated Circuit (IC)

Use: The ISD4004-12ME is a specialized IC used for audio recording and playback applications. It is commonly employed in devices such as voice recorders, answering machines, and other audio storage systems.

Characteristics: - High-quality audio recording and playback capabilities - Low power consumption - Non-volatile memory for data retention even when power is disconnected - Easy integration with microcontrollers and other digital systems

Package: The ISD4004-12ME is available in a standard 28-pin plastic dual inline package (PDIP). This package offers ease of handling and compatibility with various circuit board designs.

Essence: The essence of the ISD4004-12ME lies in its ability to provide reliable and efficient audio recording and playback functionality in a compact and versatile package.

Packaging/Quantity: The IC is typically sold in reels or tubes containing multiple units, making it suitable for mass production and assembly processes.

Specifications

• Operating Voltage: 2.4V - 5.5V
• Recording Time: Up to 240 seconds (at 12kHz sampling rate)
• Sampling Frequency: 4kHz - 12kHz
• Audio Format: Linear PCM
• Memory Type: Non-volatile Flash
• Number of Messages: Up to 99 individual messages
• Interface: Serial (SPI) or Parallel

Detailed Pin Configuration

The ISD4004-12ME features a total of 28 pins, each serving a specific purpose. Here is a detailed pin configuration:

1. VCC - Power supply voltage
2. GND - Ground reference
3. CE - Chip Enable
4. WE - Write Enable
5. OE - Output Enable
6. RESET - Reset input
7. XTI - Crystal oscillator input
8. XTO - Crystal oscillator output
9. NC - No Connection
10. A0-A12 - Address inputs
11. DQ0-DQ7 - Data inputs/outputs
12. BUSY - Busy status output
13. INT - Interrupt output
14. PD - Power-down input
15. M1 - Mode select input 1
16. M0 - Mode select input 0
17. NC - No Connection
18. NC - No Connection
19. NC - No Connection
20. NC - No Connection
21. NC - No Connection
22. NC - No Connection
23. NC - No Connection
24. NC - No Connection
25. NC - No Connection
26. NC - No Connection
27. NC - No Connection
28. NC - No Connection

Functional Features

The ISD4004-12ME offers several functional features that enhance its usability and performance:

• Multiple Message Management: The IC allows for the storage and retrieval of up to 99 individual audio messages, enabling versatile usage scenarios.
• Flexible Sampling Frequency: With a sampling frequency range of 4kHz to 12kHz, the IC provides options for balancing audio quality and storage capacity.
• Serial or Parallel Interface: The choice between serial (SPI) or parallel interface allows for seamless integration with various microcontrollers and digital systems.
• Power-Down Mode: The IC includes a power-down mode, which reduces power consumption when not in use, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages: - High-quality audio recording and playback capabilities - Non-volatile memory ensures data retention even during power loss - Versatile interface options for easy integration - Multiple message management enhances flexibility

Disadvantages: - Limited recording time compared to some other audio storage solutions - Requires external crystal oscillator for accurate timing

Working Principles

The ISD4004-12ME utilizes non-volatile Flash memory to store audio data. When recording, the IC samples and digitizes the incoming audio signal, storing it in its memory. During playback, the stored data is retrieved and converted back into an analog audio signal for output.

The IC's control pins, such as Chip Enable (CE), Write Enable (WE), and Output Enable (OE), facilitate the recording and playback processes. The address inputs (A0-A12) and data inputs/outputs (DQ0-DQ7) enable communication with external devices.

Detailed Application Field Plans

The ISD4004-12ME finds applications in various fields where audio recording and playback are required. Some detailed application field plans include:

1. Voice Recorders: The IC can be used in portable voice recorders for capturing and playing back voice memos, interviews, or lectures.
2. Answering Machines: It can be integrated into telephone answering machines to record and play back messages left by callers.
3. Security