X84041

The X84041 Micro Port Saver is a 4096-bit CMOS E²PROM designed for a direct interface to port limited microcontroller or I/O limited microprocessor designs.The X84041 provides all of the benefits of serial memories,such as low cost, low power, low voltage operation,and small package size, while featuring higher data transfer rates and reduced interface code requirements-without the need for a dedicated serial bus. The X84041 is organized as a 512 x 8, but is also suitable in 16-bit or 32-bit environments, due to the bit serial nature of the interface.

The X84041 directly connects to the processor bus and communicates over a single data line using a sequence of standard bus read and write operations. This eliminates the need for dedicated port pins, parallel to serial converters, complicated ASIC implementations, or other glue logic, lowering system cost. A Write Protect (WP) pin provides hardware protection against inadvertent writes to the memory.Xicor E²PROMs are designed and tested for applications requiring extended endurance. Inherent data retention is greater than 100 years