AT27C2048-70JC

Product Overview

Category

AT27C2048-70JC belongs to the category of programmable read-only memory (PROM) chips.

Use

This chip is commonly used for storing fixed data or program code that cannot be modified once programmed.

Characteristics

• Non-volatile: The stored data is retained even when power is removed.
• High density: The AT27C2048-70JC has a capacity of 2,048 kilobits (256 kilobytes).
• Fast access time: It operates at a speed of 70 nanoseconds.
• Low power consumption: The chip requires minimal power to operate efficiently.

Package

The AT27C2048-70JC is available in a 32-pin PLCC (Plastic Leaded Chip Carrier) package.

Essence

The essence of this PROM chip lies in its ability to store and retrieve fixed data reliably and quickly.

Packaging/Quantity

The AT27C2048-70JC is typically sold in reels containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Capacity: 2,048 kilobits (256 kilobytes)
• Access Time: 70 nanoseconds
• Operating Voltage: 5V
• Package Type: 32-pin PLCC
• Temperature Range: -40°C to +85°C

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. E (Chip Enable)
13. G (Output Enable)
14. Vcc (+5V Power Supply)
15. DQ0 (Data Output Bit 0)
16. DQ1 (Data Output Bit 1)
17. DQ2 (Data Output Bit 2)
18. DQ3 (Data Output Bit 3)
19. DQ4 (Data Output Bit 4)
20. DQ5 (Data Output Bit 5)
21. DQ6 (Data Output Bit 6)
22. DQ7 (Data Output Bit 7)
23. Vss (Ground)
24. CE1 (Chip Enable 1)
25. CE2 (Chip Enable 2)
26. OE (Output Enable)
27. WE (Write Enable)
28. A14
29. A13
30. A8
31. A9
32. A11

Functional Features

• High-speed access: The AT27C2048-70JC offers fast access times, allowing for efficient data retrieval.
• Non-volatile storage: The chip retains the stored data even when power is removed, ensuring data integrity.
• Easy integration: It can be easily integrated into various electronic systems due to its standard pin configuration and compatibility.

Advantages and Disadvantages

Advantages

• Reliable data storage: The non-volatile nature of PROM ensures that the stored data remains intact over time.
• Fast access time: The chip's quick response time enables efficient data retrieval.
• Low power consumption: The AT27C2048-70JC consumes minimal power during operation.

Disadvantages

• Lack of flexibility: Once programmed, the data stored in PROM cannot be modified or erased, limiting its versatility compared to other memory technologies.
• Limited capacity: The chip has a maximum capacity of 2,048 kilobits, which may not be sufficient for certain applications requiring larger storage.

Working Principles

The AT27C2048-70JC operates based on the principle of electrical charge trapping. During programming, the desired data is stored by applying electrical charges to specific memory cells. Once programmed, these charges remain trapped within the memory cells, allowing for non-volatile storage.

Detailed Application Field Plans

The AT27C2048-70JC finds applications in various fields, including:

1. Embedded Systems: It is commonly used in embedded systems to store firmware or fixed configuration data.
2. Consumer Electronics: The chip can be found in devices such as gaming consoles, set-top boxes, and home appliances, where fixed data storage is required.
3. Automotive Industry: PROM chips are utilized in automotive electronics for storing critical data like engine control parameters and firmware.
4. Industrial Automation: The AT27C2048-70JC is suitable for industrial automation systems that require reliable and non-volatile storage of configuration data.

Detailed and Complete Alternative Models

1. AT28C256-15PU: This 32-kilobyte EEPROM chip offers similar functionality to the AT27C2048-70JC but allows for erasing and reprogramming of data.
2. AM29F040B-90JC: A 4-megabit flash memory chip with