STMicroelectronics

M27C4001-12C1

M27C4001-12C1 Description

The M27C4001-12C1 is a 4Mbit (512K x 8) parallel EPROM manufactured by STMicroelectronics, designed for applications requiring non-volatile memory storage. Operating within a 4.5V to 5.5V supply range, this device features a 120 ns access time, making it suitable for systems demanding moderate-speed data retrieval. Housed in a 32-pin PLCC (Plastic Leaded Chip Carrier) package, it is surface-mountable, ensuring compact integration into PCB designs. The EPROM is RoHS3 compliant and adheres to REACH regulations, reflecting its environmental compliance. With an operating temperature range of 0°C to 70°C, it is ideal for commercial and industrial environments.

M27C4001-12C1 Features

• Memory Organization: 512K x 8 configuration, offering flexible byte-wide addressing.
• Parallel Interface: Enables straightforward integration with microcontrollers and legacy systems.
• High Reliability: EPROM technology ensures data retention without power, ideal for firmware storage.
• Wide Voltage Range (4.5V–5.5V): Compatible with standard 5V logic systems.
• Surface-Mount Package (32-PLCC): Saves board space and simplifies assembly.
• RoHS3/REACH Compliant: Meets stringent environmental and safety standards.
• Obsolete Status: While no longer in production, it remains a viable choice for legacy system maintenance.

M27C4001-12C1 Applications

This EPROM is particularly suited for:

• Legacy Embedded Systems: Firmware storage in industrial control systems, medical devices, and automotive electronics.
• Retro Computing: Repair or replication of vintage computers and arcade machines.
• Test Equipment: Calibration data storage in instrumentation requiring non-volatile memory.
• Telecommunications: Backup memory for configuration parameters in older networking hardware.

Conclusion of M27C4001-12C1

The M27C4001-12C1 is a robust, parallel EPROM offering 4Mbit capacity with moderate-speed access (120 ns), making it a dependable choice for legacy and niche applications. Its 5V compatibility, byte-wide organization, and surface-mount packaging ensure seamless integration into existing designs. While marked as obsolete, it remains valuable for maintenance, repairs, and retro-computing projects where modern alternatives may not be compatible. Engineers seeking a reliable, non-volatile memory solution for 5V systems will find this EPROM a practical option.