M27C4002-90C1

Product Overview

Category: Integrated Circuit (IC)

Use: The M27C4002-90C1 is a high-performance, 4-megabit (512K x 8) UV erasable and electrically programmable read-only memory (EPROM). It is commonly used in various electronic devices for storing firmware, program code, and other non-volatile data.

Characteristics: - High storage capacity of 4 megabits - UV erasable and electrically programmable - Reliable and durable - Fast access time - Low power consumption

Package: The M27C4002-90C1 is available in a standard 32-pin plastic dual in-line package (PDIP), which provides easy integration into circuit boards.

Essence: This IC is designed to provide reliable and non-volatile storage for critical data in electronic systems. Its high capacity and programmability make it suitable for a wide range of applications.

Packaging/Quantity: The M27C4002-90C1 is typically sold in reels or tubes, with each reel or tube containing a specific quantity of ICs. The exact packaging and quantity may vary depending on the supplier.

Specifications

• Memory Size: 4 Megabits (512K x 8)
• Access Time: 90 ns
• Supply Voltage: 5V ±10%
• Operating Temperature Range: -40°C to +85°C
• Erase/Program Cycle Endurance: 100,000 cycles
• Data Retention: 20 years

Pin Configuration

The M27C4002-90C1 has a total of 32 pins. Here is the detailed pin configuration:

```

Pin Name Description

1 A14 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 VPP Programming Voltage 12 A8 Address Input 13 A9 Address Input 14 A11 Address Input 15 A13 Address Input 16 /OE Output Enable 17 A10 Address Input 18 DQ0 Data Input/Output 19 DQ1 Data Input/Output 20 DQ2 Data Input/Output 21 DQ3 Data Input/Output 22 DQ4 Data Input/Output 23 DQ5 Data Input/Output 24 DQ6 Data Input/Output 25 DQ7 Data Input/Output 26 /CE Chip Enable 27 /WE Write Enable 28 VCC Power Supply 29 GND Ground 30 NC No Connection 31 A15 Address Input 32 A16 Address Input ```

Functional Features

• High storage capacity: The M27C4002-90C1 offers 4 megabits of memory, allowing for the storage of large amounts of data.
• UV erasable and electrically programmable: This IC can be erased using ultraviolet (UV) light and programmed electrically, providing flexibility in data modification.
• Fast access time: With an access time of 90 ns, the M27C4002-90C1 ensures quick retrieval of stored data.
• Low power consumption: The IC is designed to operate with low power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - High storage capacity - Flexible erasing and programming methods - Fast access time - Low power consumption

Disadvantages: - UV erasable EPROMs require additional equipment for erasure - Limited endurance of erase/program cycles (100,000 cycles)

Working Principles

The M27C4002-90C1 is based on the principle of electrically programmable read-only memory (EPROM). It utilizes a floating gate transistor structure to store data. The stored data can be modified by applying appropriate voltages to specific pins of the IC during programming operations. The UV erasable feature allows for complete erasure of the memory content using ultraviolet light before reprogramming.

Detailed Application Field Plans

The M27C4002-90C1 finds applications in various electronic systems that require non-volatile memory for storing firmware, program code, or other critical data. Some common application fields include: - Microcontrollers - Embedded systems - Industrial control systems - Automotive electronics - Communication devices