M27C512-12F1 ceramic with mirror memory

The M27C512-12F1 is a 512 Kbit (64 K x 8) UV EPROM (Erasable Programmable Read-Only Memory) IC manufactured by STMicroelectronics. It offers non-volatile storage that can be electrically programmed and erased using ultraviolet (UV) light. This particular model comes in a ceramic package with a quartz window (mirror) that allows exposure to UV light for erasing the memory content. The M27C512-12F1 is designed for applications requiring reliable, long-term data storage and is typically used in embedded systems, industrial equipment, and other electronic devices.

Key Features:

• Memory Capacity: 512 Kbits (64 K x 8 bits)
• Organization: 65,536 words × 8 bits
• Technology: UV EPROM (Erasable Programmable Read-Only Memory)
• Voltage Supply: Single +5V for read operations
• Programming Voltage: 12.5V
• Erase Time: Typically 20 to 30 minutes with recommended UV intensity
• Access Time: 120 ns (maximum)
• Package Type: Ceramic with quartz window (mirror) for UV erasure

Technical Specifications:

• Supply Voltage: +5V
• Input/Output Voltage: +5V
• Operating Temperature Range: 0°C to +70°C
• Storage Temperature Range: -65°C to +150°C
• Programming Time: 50 ms/word (typical)
• Data Retention: 20 years (minimum) after 100,000 erase/write cycles
• Package Type: 28-pin Ceramic DIP with quartz window

Applications:

• Embedded Systems: Stores program code and data in microcontroller-based systems.
• Industrial Equipment: Used for firmware storage in industrial control systems.
• Automotive Electronics: Stores calibration data and configuration settings.
• Consumer Electronics: Used in electronic products requiring non-volatile memory storage.
• Legacy Systems: Replaces older UV EPROMs in existing designs.

Datasheet:
For detailed technical information, refer to the M27C512-12F1 UV EPROM Datasheet.