STMicroelectronics

M27C4001-80XF1

M27C4001-80XF1 Description

The M27C4001-80XF1 is a 4Mbit (512K x 8) parallel EPROM from STMicroelectronics, designed for high-reliability embedded systems requiring non-volatile memory storage. Operating within a 4.75V to 5.25V supply range and featuring an 80 ns access time, this device delivers robust performance for legacy and industrial applications. Housed in a 32-CDIP (Ceramic Dual In-line Package), it ensures durability in through-hole mounting environments. Although marked as obsolete, it remains a dependable solution for systems with long lifecycles, thanks to its 0°C to 70°C operating temperature range and ROHS3 compliance.

M27C4001-80XF1 Features

• Memory Organization: 512K x 8 configuration for flexible data storage.
• High-Speed Access: 80 ns access time ensures efficient read operations.
• Wide Voltage Range: Operates at 4.75V–5.25V, compatible with standard 5V systems.
• Durable Packaging: 32-CDIP ceramic package for mechanical and thermal resilience.
• Industrial Reliability: REACH unaffected and MSL 1 (Unlimited) for extended shelf life.
• Legacy Support: Ideal for maintaining or repairing older systems due to parallel interface and EPROM format.

M27C4001-80XF1 Applications

• Industrial Control Systems: Used in PLCs, CNC machines, and automation equipment requiring stable, long-term memory.
• Medical Devices: Suitable for legacy medical instruments with strict reliability requirements.
• Telecommunications: Embedded in older telecom infrastructure for firmware storage.
• Military/Aerospace: Despite obsolescence, its ceramic packaging and wide temp range make it viable for harsh environments.
• Retro Computing: Preferred for restoring vintage computers or arcade systems.

Conclusion of M27C4001-80XF1

The M27C4001-80XF1 is a resilient, high-performance EPROM tailored for legacy and industrial applications. Its 80 ns access time, 5V compatibility, and ceramic packaging offer distinct advantages in durability and speed over newer flash-based alternatives in specific use cases. While obsolete, it remains a critical component for maintaining older systems, underscoring STMicroelectronics' legacy in reliable memory solutions. Engineers seeking a proven EPROM for repairs or long-lifecycle designs will find this IC indispensable.