STMicroelectronics

M27C1001-70C1

M27C1001-70C1 Description

The M27C1001-70C1 is a 1Mbit (128K x 8) parallel EPROM manufactured by STMicroelectronics, designed for applications requiring reliable, non-volatile memory storage. Operating within a 4.5V to 5.5V supply range and featuring a 70 ns access time, this device is optimized for high-speed data retrieval in embedded systems. The memory is organized in an 8-bit parallel interface, making it compatible with a wide range of microcontrollers and processors. Housed in a 32-pin PLCC (Plastic Leaded Chip Carrier) package, it is suitable for surface-mount technology (SMT) assembly, ensuring compact integration into modern PCB designs.

M27C1001-70C1 Features

• High-Speed Performance: 70 ns access time ensures efficient data throughput for time-critical applications.
• Wide Voltage Range: Operates at 4.5V–5.5V, accommodating standard TTL logic levels.
• Robust Packaging: 32PLCC surface-mount package offers mechanical stability and ease of assembly.
• Non-Volatile Storage: EPROM technology retains data without power, ideal for firmware storage.
• Environmental Compliance: ROHS3 and REACH compliant, meeting stringent environmental regulations.
• Extended Temperature Range: Operates reliably from 0°C to 70°C, suitable for industrial and consumer applications.

M27C1001-70C1 Applications

This EPROM is well-suited for:

• Legacy Embedded Systems: Firmware storage in industrial control systems, automotive electronics, and telecommunications equipment.
• Retro Computing: Used in vintage computer restoration or emulation hardware requiring authentic EPROM compatibility.
• Medical Devices: Reliable non-volatile memory for calibration data or boot code in older medical instruments.
• Test & Measurement Equipment: Stores fixed algorithms or lookup tables in diagnostic tools.

Conclusion of M27C1001-70C1

The M27C1001-70C1 is a dependable 1Mbit parallel EPROM offering high-speed access, broad voltage compatibility, and industrial-grade durability. While marked as obsolete, it remains a critical component for maintaining and repairing legacy systems. Its surface-mount PLCC package and 70 ns performance make it a preferred choice for engineers working with older architectures or requiring drop-in replacements. For applications demanding non-volatile memory with proven reliability, this EPROM delivers a balance of speed, stability, and compliance.