AT27C040-15PC

Product Overview

Category

AT27C040-15PC belongs to the category of programmable read-only memory (PROM) chips.

Use

This product is primarily used for storing data that needs to be permanently written and cannot be modified or erased. It is commonly employed in various electronic devices, such as computers, consumer electronics, and automotive applications.

Characteristics

• Non-volatile: The stored data remains intact even when power is turned off.
• High storage capacity: The AT27C040-15PC has a capacity of 4 megabits (512 kilobytes).
• Fast access time: With a speed of 150 nanoseconds, it ensures quick retrieval of data.
• Low power consumption: The chip operates efficiently with minimal power requirements.

Package

The AT27C040-15PC is available in a 32-pin plastic dual in-line package (PDIP). This package provides mechanical protection and facilitates easy integration into circuit boards.

Essence

The essence of the AT27C040-15PC lies in its ability to store large amounts of data reliably and securely, making it an essential component in many electronic systems.

Packaging/Quantity

This product is typically packaged in tubes or trays, with each tube containing 25 chips or each tray holding 100 chips.

Specifications

• Memory Capacity: 4 Megabits (512 Kilobytes)
• Access Time: 150 Nanoseconds
• Supply Voltage: 5 Volts
• Operating Temperature Range: -40°C to +85°C
• Data Retention: 20 years

Detailed Pin Configuration

The AT27C040-15PC features a 32-pin configuration. The pinout diagram is as follows:

```

---

| | | 1 32 | |_______________|

1. A16
2. A14
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. NC
17. I/O0
18. I/O1
19. I/O2
20. I/O3
21. I/O4
22. I/O5
23. I/O6
24. I/O7
25. GND
26. NC
27. NC
28. NC
29. NC
30. NC
31. NC
32. VCC ```

Functional Features

• Easy programming: The AT27C040-15PC can be programmed using standard PROM programming equipment.
• High reliability: The stored data is resistant to accidental erasure or modification, ensuring the integrity of critical information.
• Versatile compatibility: This chip is compatible with a wide range of microcontrollers and other digital devices.
• Efficient power management: The low power consumption of the AT27C040-15PC makes 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 extensive data storage requirements.
• Fast access time enables quick retrieval of information.
• Compatibility with various devices enhances versatility.

Disadvantages

• Inability to modify or erase stored data limits flexibility.
• Higher cost compared to other types of memory chips.
• Limited write endurance may restrict certain applications.

Working Principles

The AT27C040-15PC utilizes a one-time programmable (OTP) technology. During the manufacturing process, the desired data is permanently written into the memory cells using a high-voltage programming pulse. Once programmed, the data remains unchanged until the chip reaches its maximum write endurance or is exposed to extreme conditions.

Detailed Application Field Plans

The AT27C040-15PC finds applications in various fields, including: 1. Embedded systems: Used for firmware storage in microcontrollers and other embedded devices. 2. Automotive electronics: Employed for storing critical data in automotive control units and infotainment systems. 3. Industrial automation: Utilized in programmable logic controllers (PLCs) for storing configuration data and program code. 4. Consumer electronics: Integrated into devices like gaming consoles, set-top boxes, and digital cameras for data storage purposes.

Detailed and Complete Alternative Models

1. AT27C080-15PC: A similar PROM chip with double the capacity (8 Megabits).
2. AT28C256-15PC: An electrically erasable programmable read-only memory (EEPROM) chip with a smaller capacity (256 Kilobits) but allows for data modification.
3. AT29C010A-12PC: A flash memory chip with a capacity of 1