Pin Function Grouping


  • Set VS_1's Pin Group to "Power"
  • Set VS_1's Section to "Power"
  • Set VS_2's Pin Group to "Power"
  • Set VS_2's Section to "Power"
  • Set COM_1's Pin Group to "Ground/Common"
  • Set COM_1's Section to "Ground/Common"
  • Set COM_2's Pin Group to "Ground/Common"
  • Set COM_2's Section to "Ground/Common"
  • Set COM_3's Pin Group to "Ground/Common"
  • Set COM_3's Section to "Ground/Common"
  • Set COM_4's Pin Group to "Ground/Common"
  • Set COM_4's Section to "Ground/Common"
  • Set XOUT's Pin Group to "Analog Outputs"
  • Set XOUT's Section to "Analog Outputs"
  • Set YOUT's Pin Group to "Analog Outputs"
  • Set YOUT's Section to "Analog Outputs"
  • Set ZOUT's Pin Group to "Analog Outputs"
  • Set ZOUT's Section to "Analog Outputs"
  • Set ST's Pin Group to "Control"
  • Set ST's Section to "Control"
  • Set NC_1's Pin Group to "No Connect"
  • Set NC_1's Section to "No Connect"
  • Set NC_2's Pin Group to "No Connect"
  • Set NC_2's Section to "No Connect"
  • Set NC_3's Pin Group to "No Connect"
  • Set NC_3's Section to "No Connect"
  • Set NC_4's Pin Group to "No Connect"
  • Set NC_4's Section to "No Connect"
  • Set NC_5's Pin Group to "No Connect"
  • Set NC_5's Section to "No Connect"
  • Set NC_6's Pin Group to "No Connect"
  • Set NC_6's Section to "No Connect"
  • Set EP's Pin Group to "Exposed Pad"
  • Set EP's Section to "Exposed Pad"
Updated the ADXL335BCPZ symbol pin organization: VS pins are Power, COM pins are Ground/Common, XOUT/YOUT/ZOUT are Analog Outputs, ST is Control, NC pins are No Connect, and EP is Exposed Pad. Verified all 17 terminals now have exactly one matching Pin Group/Section assignment with no duplicated pins across groups.
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ADXL335BCPZ Pin Function Groups
Source reviewed: ADXL335 datasheet, “Pin Configuration and Function Descriptions” for the 16-lead LFCSP package.
Grouping rule used: each physical pin is assigned to exactly one functional group, so no pin is duplicated across groups.

Table


Group / SectionPinsPin namesSuggested Flux Pin TypeSuggested Pin GroupNotes
Power14, 15VS, VSPower InPowerSupply voltage pins. These are the main supply pins.
Ground / Common3, 5, 6, 7COM, COM, COM, COMGroundGroundCommon/return pins. Treat all COM pins as ground/common.
Analog Outputs8, 10, 12ZOUT, YOUT, XOUTOutputOutputAcceleration analog voltage outputs for Z, Y, and X axes.
Control / Self-Test2STInputControlSelf-test input pin.
No Connect1, 4, 9, 11, 13, 16NC, NC, NC, NC, NC, NCNot ConnectedNCNo-connect pins. Datasheet notes NC pins are not internally connected; they can be tied to COM unless otherwise noted.
Exposed PadEPExposed PadNot Connected or Ground*Exposed PadDatasheet notes the exposed pad is not internally connected, but should be soldered for mechanical integrity. If Flux requires a terminal for it, keep it in its own group so it is not mixed with electrical COM pins.
*For Flux pin typing, I would prefer Not Connected for the exposed pad because it is not internally connected electrically. If your part workflow wants all soldered pads represented as mechanical/ground-like terminals, label it clearly as Exposed Pad rather than grouping it with COM.
Per-pin assignment list

Table


PinNameSectionPin GroupPin TypeShort description
1NCNo ConnectNCNot ConnectedNo connect
2STControlControlInputSelf-test input
3COMGroundGroundGroundCommon ground
4NCNo ConnectNCNot ConnectedNo connect
5COMGroundGroundGroundCommon ground
6COMGroundGroundGroundCommon ground
7COMGroundGroundGroundCommon ground
8ZOUTAnalog OutputsOutputOutputZ-axis output
9NCNo ConnectNCNot ConnectedNo connect
10YOUTAnalog OutputsOutputOutputY-axis output
11NCNo ConnectNCNot ConnectedNo connect
12XOUTAnalog OutputsOutputOutputX-axis output
13NCNo ConnectNCNot ConnectedNo connect
14VSPowerPowerPower InSupply voltage
15VSPowerPowerPower InSupply voltage
16NCNo ConnectNCNot ConnectedNo connect
EPExposed PadExposed PadExposed PadNot ConnectedMechanical pad
Rationale
  • VS pins belong together as Power.
  • COM pins belong together as Ground / Common.
  • XOUT, YOUT, and ZOUT are the three accelerometer analog signal outputs, so they belong together as Analog Outputs.
  • ST is a unique control input, so it gets its own Control / Self-Test group.
  • NC pins are explicitly no-connect pins, so they get a No Connect group.
  • The exposed pad is not internally connected, so it should not be grouped with COM electrically, even though it is soldered for mechanical integrity.
  • Recommended functional groups

  • Per-pin assignment list

  • Rationale