The GD25Q127CYIGR is a 128 Mbit (16M x 8) serial Flash memory, offering advanced write protection mechanisms and enhanced performance. It is fabricated using Gigadevice's proprietary high-performance NOR Flash process technology. This device features a standard SPI-compatible serial peripheral interface, 4KB sector erase, 128-bit OTP (One-Time Programmable) functionality, and 4kB uniform sector architecture. The GD25Q127CYIGR operates on a single voltage of 1.8V ~ 3.6V (typical 2.5V). It also features an End of Write (EOW) verification option and supports double transfer rate (QDR) operations. The device is available in packages of 8 Pin SOP, 8 Pin USON, 8 Pin VDFN, 8 Pin WSON, 10 Pin DFN, 10 Pin WLCSP, 16 Ball BGA, and 20 Ball USON.