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AT27C040-70PC - 4Mbit Parallel EPROM Memory IC

The AT27C040-70PC from Microchip Technology is a high-performance 4-megabit (512K x 8) parallel EPROM designed for mission-critical embedded applications requiring reliable, non-volatile memory storage. This one-time programmable (OTP) EPROM delivers fast 70ns access time and operates across a wide temperature range, making it ideal for aerospace, industrial control, automotive electronics, and telecommunications systems.

Key Features & Benefits

  • High-Density Storage: 4Mbit capacity organized as 512K x 8 for flexible data management
  • Fast Access Time: 70ns access speed ensures rapid data retrieval for time-sensitive applications
  • Reliable Non-Volatile Memory: EPROM technology retains data without power, perfect for firmware and configuration storage
  • Wide Operating Range: Functions reliably from 0°C to 70°C with 4.5V to 5.5V supply voltage
  • Standard DIP Package: 32-pin DIP (0.600") through-hole mounting for easy integration and replacement
  • Parallel Interface: Simple, proven interface architecture for straightforward system integration

Typical Applications

This EPROM is engineered for demanding environments where data integrity and long-term reliability are paramount. Common applications include embedded system firmware storage, industrial controller programming, legacy system maintenance, automotive ECU programming, medical device configuration, and telecommunications equipment.

Why Choose HQICKEY for Your Memory IC Needs?

At HQICKEY, we specialize in providing premium semiconductor components for mission-critical applications. Our extensive inventory includes a comprehensive range of Memory ICs designed for aerospace, automotive, industrial, and telecommunications sectors. Every component is sourced from authorized distributors and undergoes rigorous quality verification to ensure authenticity and reliability.

Browse our complete catalog at HQICKEY.com to discover our full selection of memory solutions, microcontrollers, FPGAs, and controller ICs. For technical insights, application notes, and industry updates, visit our Technical Blog.

Need assistance with component selection or bulk orders? Our engineering team is ready to help you find the perfect memory solution for your application.

Product attributes Property Value
Manufacturer Microchip Technology
Product Series
Packaging Tube |
Memory Type Non-Volatile
Memory Format EPROM
Technology EPROM - OTP
Memory Size 4Mbit
Memory Organization 512K x 8
Memory Interface Parallel
Clock Frequency -
Write Cycle Time - Word, Page -
Access Time 70 ns
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature 0°C ~ 70°C (TC)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 32-DIP (0.600", 15.24mm)
Supplier Device Package 32-PDIP