您好!我使用ADS8331 SPI通讯的SCLK为1K左右能正常读取数据,为10K 以上读到的数据都是错去的?请问如何解决?
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Hi
见datasheet: http://www.ti.com.cn/cn/lit/ds/symlink/ads8331.pdf 参数表
在VA=2.7和VA=5V时, SCLK的频率都是非常高的:Used as I/O clock only , 前者25MHzmax, 后者40MHzmax.
如果频率太高就会出现异常,建议检查SPI时序,可参考datasheet第九页时序图,参考第七、八页参数表。