The SMJ27C256-15JM is a 256K (32K x 8) UV Erasable Programmable Read-Only Memory (EPROM) manufactured by Austin Semiconductor. This EPROM offers a reliable and non-volatile storage solution for embedded systems and other applications where data retention is critical. The "SMJ" designation typically indicates a military-grade or high-reliability part. The "-15" indicates a 150ns access time.

Applications

• Embedded systems
• Industrial control systems
• Aerospace applications
• Military applications
• Firmware storage
• Boot loaders
• Program storage

Features

• 256K (32K x 8) EPROM
• Fast access time (150ns)
• Non-volatile storage
• UV erasable
• Single 5V power supply
• JEDEC standard pinout
• Ceramic DIP package (JM suffix)
• High reliability

Benefits

• Non-volatile storage: Data is retained even when power is removed.
• Fast access time: Enables quick retrieval of data.
• UV erasable: Allows for reprogramming when needed.
• High reliability: Ensures long-term data integrity in harsh environments.
• Industry-standard package: Simplifies integration into existing designs.

Additional Details

The SMJ27C256-15JM EPROM is programmed using a UV EPROM programmer. The data is stored in the memory cells until it is erased by exposing the die to ultraviolet light through a quartz window on the top of the package. The ceramic DIP package provides good environmental protection and is suitable for applications where high reliability is required. Austin Semiconductor is a supplier of high-reliability memory devices, ensuring the quality and performance of the SMJ27C256-15JM. Designers should consult the official datasheet for detailed specifications, package dimensions, and recommended operating conditions. Proper decoupling and noise reduction techniques are crucial for ensuring reliable operation. Since it is a ceramic package, care should be taken during handling to avoid damage.