STMicroelectronics M27C512-12FI UV EPROM Memory

Description:

The STMicroelectronics M27C512-12FI EPROM is a UV-erasable and one-time programmable (OTP) memory integrated circuit used in industrial electronics, embedded systems, and legacy computing equipment for non-volatile data storage. Commonly installed in PLCs, CNC machines, arcade systems, telecommunications equipment, and industrial controllers requiring permanent firmware or configuration storage. Maintenance teams and system integrators use this EPROM for replacement, repair, and restoration of legacy electronic systems. The device stores 512 Kbits organized as 64K × 8 bits and operates from a single 5V supply.

Applications:

The M27C512-12FI is commonly used in industrial automation equipment, embedded controllers, telecommunications systems, medical equipment, and vintage computing hardware where reliable non-volatile memory is required. Its UV-erasable design allows repeated programming during development, while OTP variants are used for permanent production applications.

Technical Specifications:

• Manufacturer Part Number (MPN): M27C512-12FI
• Product Type: UV EPROM / OTP EPROM
• Manufacturer: STMicroelectronics
• Memory Capacity: 512 Kbit (64K × 8)
• Access Time: 120 ns
• Supply Voltage: 5 V ±10%
• Programming Voltage: 12.75 V
• Package: 28-Pin Ceramic DIP with Quartz Window (FDIP28W)
• Interface: Parallel
• Operating Temperature: 0°C to +70°C
• Application Environment: Industrial Electronics and Embedded Systems
• Lifecycle Status: Obsolete / No Longer Manufactured

Common Replacements:

• STMicroelectronics M27C512-15F1
• Microchip 27C512 EPROM
• AMD AM27C512 EPROM
• Intel 27C512 EPROM