AT27C400-90PC

Product Overview

Category

AT27C400-90PC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used in electronic devices for storing permanent data that cannot be modified or erased.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C400-90PC has a capacity of 4 megabits (512 kilobytes).
• Fast access time: The access time is 90 nanoseconds, allowing for quick retrieval of data.
• Low power consumption: The chip operates at low power levels, making it suitable for battery-powered devices.

Package

The AT27C400-90PC is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of this product lies in its ability to provide reliable and non-volatile storage for electronic devices.

Packaging/Quantity

The AT27C400-90PC is typically packaged in tubes or trays, with a quantity of 25 pieces per tube/tray.

Specifications

• Memory Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 90 Nanoseconds
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PDIP

Detailed Pin Configuration

1. A16
2. A15
3. A12
4. A7
5. A6
6. A5
7. A4
8. A3
9. A2
10. A1
11. A0
12. VPP
13. OE#
14. CE#
15. WE#
16. I/O0
17. I/O1
18. I/O2
19. I/O3
20. I/O4
21. I/O5
22. I/O6
23. I/O7
24. VCC
25. GND
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. NC

Functional Features

• Easy programming: The AT27C400-90PC can be programmed using standard PROM programming equipment.
• High reliability: The chip offers excellent data retention and endurance characteristics.
• Compatibility: It is compatible with a wide range of microcontrollers and other electronic devices.
• Low power consumption: The chip operates at low power levels, extending the battery life of portable devices.

Advantages and Disadvantages

Advantages

• Non-volatile storage
• High storage capacity
• Fast access time
• Low power consumption
• Easy programming

Disadvantages

• Data cannot be modified or erased once programmed
• Limited storage capacity compared to other memory technologies

Working Principles

The AT27C400-90PC uses a floating-gate transistor technology to store data. When the chip is programmed, electrical charges are trapped in the floating gate, representing the desired data. These charges can be read by applying appropriate voltages to the chip's pins.

Detailed Application Field Plans

The AT27C400-90PC is widely used in various applications, including: 1. Embedded systems 2. Automotive electronics 3. Industrial control systems 4. Consumer electronics 5. Medical devices

Detailed and Complete Alternative Models

Some alternative models to the AT27C400-90PC include: 1. AT28C256-15PU 2. AM29F040B-90JC 3. M27C4001-12F1 4. SST39SF040-70-4C-NHE

These models offer similar functionality and can be used as alternatives depending on specific requirements.

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