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Microchip 4 MB EPROM 32-Pin PDIP, OTP Reprogrammable, Parallel Interface, 90ns Access Time AT27C040-90PU
Specifications
| Country of Origin | India |
|---|---|
| Brand | Microchip |
| Height | 4.8mm |
| Length | 42.2mm |
| Model | AT27C040-90PU |
| Width | 13.9mm |
| Mount Type | Through Hole |
| Maximum Operating Temperature | 85°C |
| Package Type | PDIP |
| Minimum Operating Temperature | -40°C |
| Memory size | 4MB |
| Interface Type | Parallel |
| Pin Count | 32 |
| Maximum Supply Voltage | 5.5V |
| Minimum Supply Voltage | 4.5V |
| Supply Current | 100μA |
| Organisation | 512 k x 8 Bit |
| Number of Bits per Word | 8 |
| Maximum Random Access Time | 90ns |
| Number of Words | 512K |
| Reprogramming Technique | OTP |
| STMicroelectronics 4Mbit OTP EPROM Memory 32-Pin PDIP, M27C4001-10B1Brand | STMicroelectronics |
| Microchip 4Mbit EPROM Chip 32-Pin PDIP, AT27C040-90PUBrand | Atmel |
Key Features
- This EPROM offers 4MB memory organized as 512 k x 8 bits for robust data storage.
- The device supports One Time Programmable (OTP) reprogramming technique without UV erasability.
- It operates within a voltage range of 4.5V to 5.5V, ensuring stable power requirements.
- The operating temperature range spans from -40°C to 85°C, providing broad environmental tolerance.
- Pin count is 32 within a PDIP package, making it compatible with legacy and modern circuit boards.
- Maximum random access time is 90 nanoseconds enabling fast data retrieval.
- Supply current is low at 100μA, optimizing power efficiency in embedded systems.
- Package dimensions include 42.2mm length, 13.9mm width, and 4.8mm height.
Product Description
Microchip AT27C040-90PU is a high-performance 4 MB Erasable Programmable Read-Only Memory (EPROM) device with a 32-pin PDIP package, designed for applications requiring stable, secure, and one-time programmable memory storage. This OTP EPROM offers a parallel interface with a maximum random access time of 90 nanoseconds, making it suitable for fast memory operations in industrial and embedded electronic systems.
This device uses a One Time Programmable reprogramming technique, meaning, unlike UV-erasable EPROMs, it cannot be erased and reprogrammed once programmed, thus securing the data integrity permanently. It operates at a minimum supply voltage of 4.5V and a maximum of 5.5V, with an operating temperature range from -40°C to 85°C, allowing reliable use in harsh environments.
Its through-hole mounting PDIP package with 32 pins supports legacy designs and simplifies prototyping and production-level assembly. The device is ideal for embedded applications where permanent data retention is critical, including industrial controllers, automotive systems, and electronic manufacturing equipment.
Key product dimensions are 42.2mm in length, 13.9mm in width, and 4.8mm in height, which facilitates compatibility with many PCB layouts. With a supply current of 100μA, it offers energy efficiency suitable for low power electronic designs.
4 MB memory capacity organized as 512 k x 8 bits. One Time Programmable reprogramming technique (OTP) for permanent memory storage. Parallel interface for direct memory access. 32-pin PDIP through-hole package for easy mounting.
Fast 90ns maximum random access time. Wide operating temperature range of -40°C to 85°C. Low supply current of 100μA for efficient power usage. Package dimensions: 42.2mm x 13.9mm x 4.8mm (LxWxH).
Applications of the AT27C040-90PU include use in electronic components for industrial, manufacturing, embedded systems, and electronics repair sectors. Its robust build and OTP feature ensure consistent performance and secure data retention in critical memory applications.
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Frequently Asked Questions
This model offers a memory capacity of 4MB, organized as 512 k x 8 bits.
The maximum random access time for this EPROM is 90 nanoseconds, enabling fast data retrieval.
It operates within a temperature range of -40°C to 85°C, allowing for use in various environmental conditions.
The device features a parallel interface for direct memory access.
The AT27C040-90PU operates within a supply voltage range of 4.5V to 5.5V.
This unit has a pin count of 32, making it compatible with various circuit boards.
The supply current is low at 100μA, which helps optimize power efficiency in embedded systems.
The package dimensions are 42.2mm in length, 13.9mm in width, and 4.8mm in height.
It features a through-hole mounting type, which simplifies prototyping and assembly.
This model uses a One Time Programmable (OTP) reprogramming technique, meaning it cannot be erased once programmed.
It is commonly used in embedded applications where permanent data retention is critical, such as in industrial controllers and automotive systems.
The country of origin for this product is India.
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