The ZB25D80B of non-volatile flash memory device supports the standard Serial Peripheral Interface (SPI). Traditional SPI single bit serial input and output (Single I/O or SIO) is supported as well as optional two bit (Dual I/O or DIO) serial protocols. This multiple width interface is called SPI Multi-I/O or MIO. 

    The SPI protocols use only 4 signals:

    Chip Select (CS#)

    Serial Clock (CLK)

    Serial Data

    - IO0 (DI)

    - O1 (DO)

    The ZB25D80B support the standard Serial Peripheral Interface (SPI) and Dual Output SPI : Serial Clock, Chip Select, Serial Data I/O0 (DI), O1 (DO). SPI clock frequencies of up to 100MHz are supported allowing equivalent clock rates of 200MHz (100MHz x 2) for Dual Output when using the Fast Read Dual Output . These transfer rates can outperform standard Asynchronous 8 and 16-bit Parallel Flash memories.

    The ZB25D80B provides an ideal storage solution for systems with limited space, signal connections, and power. These memories‘ flexibility and performance is better than ordinary serial flash devices. They are ideal for code shadowing to RAM, executing code directly (XIP), and storing reprogrammable data.

    非易失性闪存设备的ZB25D80B支持标准的串行外设接口（SPI）。支持传统的SPI单位串行输入和输出（单I/O或SIO)，以及可选的两位（双I/O或DIO)串行协议。这个多宽度接口称为SPI多I/O或MIO。

    SPI协议仅使用4个信号：

    芯片选择（CS#）

    串行时钟（CLK）

    串行数据

    - IO0 (DI)

    - O1 (DO)

    ZB25D80B支持标准的串行外设接口（SPI）和双输出SPI：串行时钟、芯片选择、串行数据I/O0（DI）、O1（DO）。当使用快速读双输出时，支持SPI时钟频率高达100MHz，允许双输出的200MHz（100MHz x 2）的等效时钟速率。这些传输速率可以优于标准的异步8位和16位并行闪存。

    ZB25D80B为空间有限、信号连接和功率有限的系统提供了一个理想的存储解决方案。这些内存的灵活性和性能都优于普通的串行闪存设备。它们是将代码隐藏到RAM、直接执行代码（XIP）和存储可重编程数据的理想选择。

ZB25D80B Ordering Information：

ZB25D80B Block Diagram：

ZB25D80B Connection Diagrams：

ZB25D80B Signal Descriptions：