AT27C1024-70JI

Product Overview

Category

AT27C1024-70JI belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is commonly used for storing permanent data or program code that cannot be altered once programmed.

Characteristics

• Non-volatile: The stored data remains intact even when power is removed.
• High storage capacity: The AT27C1024-70JI has a capacity of 1,048,576 bits (128 kilobytes).
• Fast access time: It operates at a speed of 70 nanoseconds.
• Low power consumption: The chip is designed to minimize power usage.

Package

The AT27C1024-70JI is available in a 32-pin plastic J-lead chip carrier (PLCC) package.

Essence

The essence of this product lies in its ability to provide non-volatile storage for critical data or program code in various electronic systems.

Packaging/Quantity

The AT27C1024-70JI is typically packaged in tubes or trays and is available in quantities suitable for both small-scale and large-scale production.

Specifications

• Memory Type: Programmable Read-Only Memory (PROM)
• Capacity: 1,048,576 bits (128 kilobytes)
• Access Time: 70 nanoseconds
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Package Type: 32-pin PLCC

Detailed Pin Configuration

The AT27C1024-70JI features a 32-pin configuration with the following pin assignments:

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. Q7
16. Q6
17. Q5
18. Q4
19. Q3
20. Q2
21. Q1
22. Q0
23. VSS (Ground)
24. NC (No Connection)
25. A8
26. A9
27. A11
28. A10
29. OE (Output Enable)
30. CE (Chip Enable)
31. WE (Write Enable)
32. NC (No Connection)

Functional Features

• Non-volatile storage: The AT27C1024-70JI retains data even when power is removed.
• High-speed access: With an access time of 70 nanoseconds, it provides fast retrieval of stored information.
• Easy integration: The chip can be easily integrated into various electronic systems due to its standard pin configuration.
• Low power consumption: Designed with power efficiency in mind, it minimizes energy usage.

Advantages and Disadvantages

Advantages

• Non-volatile memory ensures data integrity.
• High storage capacity for critical data or program code.
• Fast access time allows for quick retrieval of information.
• Low power consumption reduces energy usage.

Disadvantages

• Once programmed, the data cannot be altered or updated.
• Limited write endurance compared to other memory technologies.
• Relatively higher cost compared to other memory options.

Working Principles

The AT27C1024-70JI operates based on the principle of electrical programming. During programming, a high voltage is applied to the appropriate pins to store the desired data. Once programmed, the stored data remains intact until the next programming cycle.

Detailed Application Field Plans

The AT27C1024-70JI finds applications in various fields, including: 1. Embedded systems: Used for storing firmware or boot code in microcontrollers. 2. Automotive electronics: Utilized for storing critical data in automotive control units. 3. Industrial automation: Employed for storing program code in PLCs (Programmable Logic Controllers). 4. Medical devices: Used for storing software or configuration data in medical equipment.

Detailed and Complete Alternative Models

1. AT28C64B-15PU: A 64-kilobit electrically erasable programmable read-only memory (EEPROM) chip with a 150 nanosecond access time.
2. AM29F040B-90JC: A 4-megabit flash memory chip with a 90 nanosecond access time and sector erase capability.
3. M27C256B-12F1: A 256-kilobit UV erasable programmable read-only memory (EPROM) chip with a 120 nanosecond access time.

These alternative models offer different capacities, erase mechanisms, and access times to suit specific application requirements.

In conclusion, the AT27C1024-