Ramsun's serial SRAM family provides a way to easily and inexpensively add external RAM to almost any application. These 8-pin serial devices use less power and fewer I/O connections than traditional parallel SRAM. They also allow designers to use a smaller microcontroller rather than moving to a larger device just to get more on-board RAM. Zero write-cycle times make these devices ideal for offloading graphics, data buffering, data logging, displays, math, audio, video, and other data-intensive functions to a standalone SRAM. SDI and SQI allow for 2x and 4x data rates compared with standard SPI. SPI-compatible serial SRAM devices from Microchip are available in 64 Kbit, 256 Kbit, 512 Kbit, and 1024 Kbit options. These devices provide high-speed performance at low power making them ideal for embedded applications needing more RAM.