STMicroelectronics

M27C801-100B1

M27C801-100B1 Description

The M27C801-100B1 is an 8Mbit (1M x 8) parallel EPROM manufactured by STMicroelectronics, designed for applications requiring non-volatile memory storage with moderate access speeds. Operating within a 4.5V to 5.5V supply range and featuring a 100 ns access time, this device is optimized for embedded systems, industrial controls, and legacy computing applications. Its 32DIP through-hole package ensures robust mechanical stability, making it suitable for prototyping and long-term deployment in harsh environments. The EPROM is ROHS3 compliant and REACH unaffected, aligning with modern environmental standards while maintaining backward compatibility with older designs.

M27C801-100B1 Features

• High-Density Storage: 8Mbit capacity organized as 1M x 8, ideal for firmware or data logging.
• Wide Voltage Range: Operates at 4.5V–5.5V, ensuring compatibility with 5V TTL/CMOS systems.
• Parallel Interface: Enables straightforward integration with microcontrollers and CPUs.
• Extended Temperature Range: Functions reliably from 0°C to 70°C, suitable for industrial and consumer applications.
• Through-Hole Mounting: DIP package simplifies manual assembly and rework.
• Low Sensitivity: MSL 1 (Unlimited) ensures no moisture-related handling constraints.

M27C801-100B1 Applications

• Legacy Systems: Upgrading or repairing vintage computers and arcade machines.
• Industrial Automation: Storing firmware for PLCs, motor controllers, and instrumentation.
• Embedded Development: Prototyping and low-volume production where UV-erasable memory is preferred.
• Telecommunications: Backup memory for network equipment with infrequent updates.

Conclusion of M27C801-100B1

The M27C801-100B1 offers a balance of reliability, density, and ease of integration, making it a pragmatic choice for systems requiring durable, non-volatile memory. While newer flash-based alternatives exist, this EPROM remains relevant for long-lifecycle designs and applications demanding UV-erasable flexibility. Its 100 ns access time and 5V compatibility ensure seamless operation in legacy and industrial environments, solidifying its role as a dependable solution for specialized memory needs.