A5000 RFU pins - inconsistent guidance in datasheet

michaelh2 — Wed, 16 Nov 2022 21:26:35 GMT

I am replacing the SE050 with A5000 on my schematic. The NXP documentation mentions the parts are pin-to-pin compatible.

However, the Pin Description table of the datasheets for the two parts differ when describing the RFU pins (originally used for ISO 7816 interface):

A5000 datasheet (Rev 1.2) recommends
- pin 3 and 13 to VCC
- pin 14 to VSS
- pin 16 to VIN
SE050 datasheet (Rev 3.7) recommends
- pin 3, 13, and 16 NC
- pin 14 to VSS or VCC

Which one is correct? Ideally I'd like to NC as many pins as possible to simplify layout routing.

Re: A5000 RFU pins - inconsistent guidance in datasheet

Kan_Li — Thu, 17 Nov 2022 06:42:40 GMT

Hi @michaelh2 ,

Please following the SE050 datasheet (Rev 3.7) recommendation, and the data sheet of A5000 will be updated accordingly in the future.

Sorry for the confusion that has caused.

Have a great day,
Kan

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A5000 RFU pins - inconsistent guidance in datasheet

Re: A5000 RFU pins - inconsistent guidance in datasheet