AT27C020-12PC

Product Overview

Category

AT27C020-12PC 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 needs to be permanently stored and cannot be modified.

Characteristics

• Non-volatile: The data stored in AT27C020-12PC remains intact even when power is turned off.
• High storage capacity: This chip has a storage capacity of 2 megabits (256 kilobytes).
• Fast access time: With an access time of 120 nanoseconds, it provides quick retrieval of stored information.
• Low power consumption: AT27C020-12PC operates on low power, making it suitable for battery-powered devices.

Package

AT27C020-12PC is available in a 32-pin plastic dual in-line package (PDIP).

Essence

The essence of AT27C020-12PC lies in its ability to store large amounts of data permanently, providing reliable and secure storage solutions.

Packaging/Quantity

This chip is typically packaged in tubes or trays, with each tube or tray containing a specific quantity of AT27C020-12PC chips. The exact quantity may vary depending on the manufacturer's packaging specifications.

Specifications

• Manufacturer: Atmel Corporation
• Part Number: AT27C020-12PC
• Memory Type: Programmable Read-Only Memory (PROM)
• Storage Capacity: 2 Megabits (256 Kilobytes)
• Access Time: 120 Nanoseconds
• Supply Voltage: 5V
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin Plastic Dual In-Line Package (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: AT27C020-12PC can be programmed using standard PROM programming equipment.
• High reliability: The stored data is resistant to accidental erasure or modification, ensuring the integrity of the information.
• Compatibility: This chip is compatible with a wide range of microcontrollers and other digital devices.
• Low power consumption: AT27C020-12PC operates on low power, making it suitable for battery-powered applications.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data retention even during power loss.
• Large storage capacity allows for storing substantial amounts of fixed data or program code.
• Fast access time enables quick retrieval of stored information.
• Low power consumption makes it suitable for portable and battery-powered devices.

Disadvantages

• Inability to modify stored data once programmed.
• Limited storage capacity compared to other modern memory technologies.
• Relatively slower access time compared to newer memory technologies.

Working Principles

AT27C020-12PC utilizes a technology called floating-gate MOSFET (metal-oxide-semiconductor field-effect transistor) to store data. The programming process involves applying electrical charges to specific memory cells, altering the threshold voltage of the transistors and effectively trapping the charge. This trapped charge represents the stored data, which can be read by applying appropriate voltages to the chip's pins.

Detailed Application Field Plans

AT27C020-12PC finds applications in various fields, including: 1. Embedded systems: Used for storing firmware or boot code in microcontrollers. 2. Automotive electronics: Employed for storing critical data such as calibration tables or configuration settings. 3. Industrial automation: Utilized for storing program code or configuration data in programmable logic controllers (PLCs). 4. Consumer electronics: Used in devices like gaming consoles, set-top boxes, or digital cameras for storing firmware or fixed data.

Detailed and Complete Alternative Models

Some alternative models to AT27C020-12PC include: - AT27C040 - AT27LV010A - AT28C256 - AM27C2048

These models offer similar functionality and characteristics, but may differ in storage capacity, package type, or access time.

In conclusion, AT27C020-12PC is a programmable read-only memory chip