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https://e2e.ti.com/support/interface-group/interface/f/interface-forum/967676/tca9555-spi-expander-suggestion
尊敬的团队：
我们是否有串行外设接口扩展器？
一个组可以 作为主设备连接到 MCU 端
另外两个组作为从器件连接到 MCU 侧
非常感谢
Jimmy
你好、Jimmy、
遗憾的是、我们的产品系列中没有任何 SPI IO 扩展器。
-Bobby
