AT27C256R-55PI

Product Overview

Category

AT27C256R-55PI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing and retrieving data in electronic devices. It provides non-volatile memory storage, meaning that the stored data remains even when power is removed.

Characteristics

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

Package

AT27C256R-55PI is available in a 28-pin DIP (Dual In-line Package) format.

Essence

The essence of AT27C256R-55PI lies in its ability to store large amounts of data reliably and efficiently.

Packaging/Quantity

This product is typically packaged in tubes or trays, with each containing a specific quantity of chips. The exact quantity may vary depending on the manufacturer's specifications.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 55 nanoseconds
• Operating Voltage: 5 volts
• Temperature Range: -40°C to +85°C
• Endurance: 10,000 write cycles

Pin Configuration

The AT27C256R-55PI chip has a total of 28 pins, each serving a specific function. The pin configuration is as follows:

1. A0 - Address Input
2. A1 - Address Input
3. A2 - Address Input
4. A3 - Address Input
5. A4 - Address Input
6. A5 - Address Input
7. A6 - Address Input
8. A7 - Address Input
9. A8 - Address Input
10. A9 - Address Input
11. A10 - Address Input
12. A11 - Address Input
13. A12 - Address Input
14. A13 - Address Input
15. A14 - Address Input
16. A15 - Address Input
17. /OE - Output Enable
18. /CE - Chip Enable
19. /WE - Write Enable
20. VSS - Ground
21. D0 - Data Input/Output
22. D1 - Data Input/Output
23. D2 - Data Input/Output
24. D3 - Data Input/Output
25. D4 - Data Input/Output
26. D5 - Data Input/Output
27. D6 - Data Input/Output
28. D7 - Data Input/Output

Functional Features

• High-speed access to stored data
• Easy integration into electronic circuits
• Reliable and durable memory storage
• Low power consumption for energy efficiency

Advantages and Disadvantages

Advantages

• Large storage capacity
• Fast access time
• Non-volatile memory
• Low power consumption

Disadvantages

• Limited write endurance (10,000 cycles)
• Requires external programming equipment for initial data storage

Working Principles

AT27C256R-55PI operates based on the principle of electrical charge trapping within a floating gate structure. The stored data is retained by isolating the charges within the memory cells, even when power is removed.

Detailed Application Field Plans

AT27C256R-55PI finds applications in various fields, including: 1. Embedded systems 2. Consumer electronics 3. Automotive industry 4. Industrial automation 5. Medical devices

Alternative Models

Below are some alternative models that offer similar functionality to AT27C256R-55PI:

1. AT28C256-15PU
2. AM27C256-150DC
3. M27C256B-12F1
4. SST27SF256-70-3C-PGE

These models provide comparable storage capacity, access time, and compatibility with electronic systems.

In conclusion, AT27C256R-55PI is a programmable read-only memory chip that offers high storage capacity, fast access time, and low power consumption. It finds applications in various industries and can be replaced by alternative models with similar specifications.