The difference between FR81S and RR81 ?

[CYqiu]

我在车身模块芯片看到是cy91520系列，显示是fr81s架构，点进去后是FR81架构，他们是同一个的意思吗？

//I see CY91520 series in the car body module chip, and it shows FR81S architecture. After clicking it, it shows FR81 architecture. Do they have the same meaning?

[HongyanW_86 · Accepted solution]

CY91520的CPU是FR81S core的，你看到的描述FR81架构也是同一个意思，我们的文档里都是用的FR81S。如果需要了解FR81S CPU core的详细features, 请参考CY91520 Series Hardware Manual, 2.1. FR81S CPU Core。

https://www.cypress.com/documentation/technical-reference-manuals/cy91520-series-32-bit-microcontrol...

[CYqiu]

谢谢回复，我以为FR81S 是FR81的子集，或者FR81 包含FR81S 呢。 原来他们是同一个意思啊。