PN532 Part Audit

Worked for 5 mins 49 sec
Thought for 10 sec — Planning project execution
Referenced guidance.
Created 4 tasks.
1/4 Inspect all existing part metadata, symbol pins, and footprint geometry

Inspect all existing part metadata, symbol pins, and footprint geometry

Find and verify the official manufacturer datasheet

Update the Datasheet property if missing

Cross-check pinout, package, footprint, and descriptions; summarize mismatches

Thought for 13 sec
Thought for 6 sec — Auditing project details
Referenced guidance.
Thought for 5 sec — Inspecting project metadata
Getting project info.
Reading symbol pins.
Reading schematic details.
Reading layout details.
Reading project assets.
Thought for 7 sec — Finding official datasheets
Read PN5321A3HN/C106,51 7ba813f4acfbe9eaf6aea14863ce818497803247a94cc6105c03ac9c0d3b77f5.pdf.
Found 1 results for site:nxp.com PN5321A3HN/C106,51 datasheet PDF.
Found 1 results for site:nxp.com/docs/en/data-sheet/ PN532 PN5321A3HN C106 51.
Found 1 results for site:nxp.com SOT618-1 package drawing PDF HVQFN40 6x6.
Reading the BOM.
Thought for 44 sec — Searching for footprint dimensions
Thought for 4 sec — Gathering project details
Found 2 results for PN5321A3HN/C106,51.
Thought for 9 sec — Checking project discrepancies
Found 1 results for Extract package outline dimensions and recommended reflow soldering footprint dimensions, including lead pads, exposed pad, solder paste pattern, thermal vias, courtyard if shown, and figure/page references..
Read PN532_C1.pdf.
Read nxp.com.
Thought for 4 sec — Ensuring comprehensive report
Completed 9 design checks — found 2 issues.
Thought for a moment
Clarifying pin mismatches
I need to compile a complete mismatch list. The names match, but they have the N.C suffix for decoration, which is fine. However, there’s an issue with unspecified types versus the datasheet types. It looks like all 40 pins' descriptions and groups are missing, which complicates things. I must classify the pin type mismatches and list them to help the user. The extra symbol pin isn't listed in the datasheet; its dimensions are also off, which could be problematic.
Assessing pin layout issues
I see that the Pin1 marker is located at (-3.375, -3) in the EDA tool, and the pad is at (-2.95, -2.25), suggesting they share a corner. However, I need to clarify the courtyard and dimensions, ensuring there's no overlap with the pads. The exposed pad is marked as pin 41, but the datasheet doesn’t list its electrical type, which could be risky. Also, I'm missing essential metadata, and there seems to be confusion between the project description and the library. Overall, this setup isn't safe for production yet.
A

adrian95

can you group together pins by their functions?
for example for Power, 3v3, gnd_1 gnd_2 etc
NOTE: If you group them, can you not add the same pin if you already added them in a group? You should know which pin function is common for its function.

flux

Yes. I’ll assign every physical pin to exactly one broad functional group based on its primary datasheet function, keep Section equal to Pin Group, place Power first and Ground last, and avoid all duplicate group membership.
Created a project doc

PN5321A3HN/C106,51 Part Audit and Pin Grouping

View Document
The exact manufacturer order code is PN5321A3HN/C106,51 (NXP Semiconductors). The official datasheet is PN532/C1, and the package drawing is...

flux

Grouped all 41 pins by their primary function with no duplicate membership; Section matches Pin Group, and pins 1–40 now include datasheet-based types and descriptions. The audit also found a production-critical exposed-pad paste mismatch, and I filed an internal part-quality report.
Full results: PN532 Part Audit and Pin Grouping
Open item
  • EP pin 41 remains electrically unspecified because the datasheet does not explicitly define its connection.
  • The exposed-pad paste pattern should be corrected before production.
Fix metadata and footprint
Fix footprint paste
Fill missing metadata
Review symbol rendering
Run part checks
Sign up to send

Files

Pins

Symbol

Layout

3D View

Name
Pin #
Type
Part Type
Pin Description
Pin Group
DVSS
1
Ground
Terminal
Digital ground.
Ground
LOADMOD
2
Output
Terminal
Load modulation signal.
RF
TVSS1
3
Ground
Terminal
Transmitter ground.
Ground
TX1
4
Output
Terminal
Transmitter output 1; modulated 13.56 MHz carrier.
RF
TVDD
5
Power In
Terminal
Transmitter power supply.
Power
TX2
6
Output
Terminal
Transmitter output 2; modulated 13.56 MHz carrier.
RF
TVSS2
7
Ground
Terminal
Transmitter ground.
Ground
AVDD
8
Power In
Terminal
Analog power supply.
Power
VMID
9
Output
Terminal
Internally generated receiver-bias reference voltage.
RF
RX
10
Input
Terminal
Receiver input.
RF
AVSS
11
Ground
Terminal
Analog ground.
Ground
AUX1
12
Output
Terminal
Auxiliary output 1 for analog and digital test signals.
Analog/Auxiliary
AUX2
13
Output
Terminal
Auxiliary output 2 for analog and digital test signals.
Analog/Auxiliary
OSCIN
14
Input
Terminal
Crystal oscillator input to inverting amplifier.
Clock
OSCOUT
15
Output
Terminal
Crystal oscillator output from inverting amplifier.
Clock
I0
16
Input
Terminal
Host interface selector 0.
Interface Selection
I1
17
Input
Terminal
Host interface selector 1.
Interface Selection
TESTEN
18
Input
Terminal
Test enable; connect to ground for normal operation.
Test
P35
19
Bi-Directional
Terminal
General-purpose I/O.
GPIO/UART
N.C._1
20
Not Connected
Terminal
Not connected.
NC
N.C._2
21
Not Connected
Terminal
Not connected.
NC
N.C._3
22
Not Connected
Terminal
Not connected.
NC
PVDD
23
Power In
Terminal
Pad power supply.
Power

PN5321A3HN/C106,51