ID and CUID chip multi-card integration
Chips and antennas can be purchased at xbao, details are as follows:
ID: T5577 chip, requires 3.8mh https://item.taobao.com/item.htm?spm=a1z09.2.0.0.4d2b2e8dWLija8&id=620327728436&_u=l1a4r4o8cd3
ID antenna: 125khz https://item.taobao.com/item.htm?spm=a1z09.2.0.0.4d2b2e8dWLija8&id=544170778615&_u=l1a4r4oa765
IC: CUID chip, requires 6.8μh https://item.taobao.com/item.htm?spm=a1z09.2.0.0.4d2b2e8dWLija8&id=542284046775&_u=l1a4r4oa74d
IC antenna: 13.56mhz onboard antenna, the coil calculation method is at st.com > eDesignSuite > RF Design > NFC Antenna Design, you can use it after registering.
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