25LC512T-I/SN

The 25LC512T-I/SN is a 512kB serial Electrically Erasable Programmable Read-Only Memory (EEPROM) with byte-level and page-level serial EEPROM functions. It also features page, sector and chip erase functions typically associated with Flash-based products. These functions are not required for byte or page write operations. The memory is accessed via a simple serial peripheral interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled by a chip select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the device is paused, transitions on its inputs will be ignored, with the exception of chip select, allowing the host to service higher priority interrupts.

• 20MHz Maximum clock speed
• Byte and page-level write operations
• No page or sector erase required
• Low-power CMOS technology
• Electronic signature for device ID
• Self-timed erase and write cycles
• Sector write protection - protect none, 1/4, 1/2 or all of array
• Built-in write protection
• Power-on/off data protection circuitry
• Write enable latch
• Write-protect pin
• High reliability
• Endurance - 1M erase/write cycles
• Data retention - <gt/>200 years
• ESD protection - <gt/>4000V

Applications

Computers & Computer Peripherals, Industrial, Communications & Networking, Consumer Electronics, Automotive