The AT25SF161B is a Serial Peripheral Interface (SPI) Flash memory device designed for use in a wide variety of high-volume industrial, consumer and connected applications. It can be used for storing program memory that is booted from Flash memory into embedded or external RAM; it can also be used for directly executing the program code from the Flash memory (execute in place [XiP]). XiP is specifically supported by features which enhance read speed: ▪ Quad-SPI, which allows reading four bits in one clock cycle. ▪ Continuous read mode (0-4-4 command format), which removes the need to send a command opcode. ▪ High SPI clock frequency. These features allow fast response from the Flash memory whenever the host must fetch commands or data from it.
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