M27C256B-90C6

Product Overview

Category

The M27C256B-90C6 belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip is primarily used for storing data that needs to be permanently retained, even when power is removed. It allows users to write data onto the chip during manufacturing and then read it back later.

Characteristics

• Non-volatile: The M27C256B-90C6 retains data even without power.
• High storage capacity: This chip has a storage capacity of 256 kilobits (32 kilobytes).
• Fast access time: The access time for reading data from this chip is 90 nanoseconds.
• Low power consumption: The M27C256B-90C6 operates on low power, making it suitable for various applications.

Package

The M27C256B-90C6 comes in a standard dual in-line package (DIP), which consists of 28 pins arranged in two parallel rows.

Essence

The essence of the M27C256B-90C6 lies in its ability to store and retrieve data reliably, making it an essential component in many electronic devices.

Packaging/Quantity

This chip is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of chips. The exact packaging and quantity may vary depending on the manufacturer.

Specifications

• Storage Capacity: 256 kilobits (32 kilobytes)
• Access Time: 90 nanoseconds
• Operating Voltage: 5 volts
• Operating Temperature Range: -40°C to +85°C
• Pin Count: 28

Detailed Pin Configuration

1. A15 - Address Input
2. A12 - Address Input
3. A7 - Address Input
4. A6 - Address Input
5. A5 - Address Input
6. A4 - Address Input
7. A3 - Address Input
8. A2 - Address Input
9. A1 - Address Input
10. A0 - Address Input
11. E - Chip Enable Input
12. G - Output Enable Input
13. Vcc - Power Supply
14. Q7 - Data Output
15. Q6 - Data Output
16. Q5 - Data Output
17. Q4 - Data Output
18. Q3 - Data Output
19. Q2 - Data Output
20. Q1 - Data Output
21. Q0 - Data Output
22. Vss - Ground
23. NC - No Connection
24. CE - Chip Enable Output
25. OE - Output Enable Output
26. WE - Write Enable Input
27. A8 - Address Input
28. A9 - Address Input

Functional Features

• High-speed access: The M27C256B-90C6 allows for fast data retrieval with an access time of 90 nanoseconds.
• Low power consumption: This chip operates on low power, making it suitable for battery-powered devices.
• Reliable data retention: The non-volatile nature of the M27C256B-90C6 ensures that stored data remains intact even without power.
• Easy integration: The standard pin configuration and package make it compatible with various electronic systems.

Advantages and Disadvantages

Advantages

• High storage capacity
• Fast access time
• Low power consumption
• Reliable data retention

Disadvantages

• Limited write cycles: The M27C256B-90C6 has a finite number of times it can be written to before it becomes unreliable.
• Lack of flexibility: Once programmed, the data stored in this chip cannot be easily modified or erased.

Working Principles

The M27C256B-90C6 operates based on the principle of electrically programmable read-only memory (EPROM). It uses a grid of transistors to store data in a non-volatile manner. During programming, electrical charges are applied to specific cells within the chip, altering their state and storing the desired data. When reading, the stored data is retrieved by activating the appropriate circuitry.

Detailed Application Field Plans

The M27C256B-90C6 finds applications in various fields, including:

1. Consumer Electronics: Used in devices like televisions, DVD players, and gaming consoles for firmware storage.
2. Automotive Industry: Employed in car audio systems, engine control units, and instrument clusters for data storage.
3. Industrial Automation: Utilized in programmable logic controllers (PLCs) and industrial control systems for program storage.
4. Medical Devices: Integrated into medical equipment for storing critical firmware and patient data.
5. Communication Systems: Used in networking devices, routers, and modems for firmware storage and configuration data.

Detailed and Complete Alternative Models

1. M27C256B-