Pin Function Grouping
Looking at the datasheet of this component, can you group together pins by their functions? for example for Power, VDD, 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
Worked for 1 min 54 sec
I grouped the ADXL345BCCZ pins into non-overlapping functional groups: Power, Ground, Digital Interface, Interrupt Outputs, Reserved, and No Connect. Full grouping and per-pin assignments are in ADXL345BCCZ Pin Function Groups.
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ADXL345BCCZ Pin Function Groups
Source: ADXL345 datasheet, “Pin Configuration and Function Descriptions,” cross-checked against the current Flux part terminals.
Grouping rule used: each physical pin is assigned to exactly one functional group. Duplicate/common-function pins such as multiple GND pins are grouped together once; no pin appears in more than one group.
Recommended groups
Table
| Functional group | Pins | Why grouped here |
|---|---|---|
| Power | 1 — VDD_I/O; 6 — VS | VDD_I/O is the digital interface supply. VS is the main supply. |
| Ground | 2 — GND_2; 4 — GND_3; 5 — GND | All are ground/return pins. Keep all three in one Ground group rather than making separate groups. |
| Digital Interface | 7 — ~CS; 12 — SDO/ALT_ADDRESS; 13 — SDA/SDI/SDIO; 14 — SCL/SCLK | These are the I²C/SPI serial-interface pins. SDO/ALT_ADDRESS is shared between SPI data output and I²C alternate address selection, but its common function is still interface/configuration, so it belongs here only once. |
| Interrupt Outputs | 8 — INT1; 9 — INT2 | Dedicated interrupt output pins. |
| Reserved | 3 — RESERVED_2; 11 — RESERVED | Datasheet marks these pins reserved. Keep them in their own Reserved group, not with NC. |
| No Connect | 10 — NC | Datasheet no-connect pin. |
Per-pin assignment checklist
Table
| Pin # | Current terminal name | Assigned group | Suggested Flux Pin Type | Notes |
|---|---|---|---|---|
| 1 | VDD_I/O | Power | Power In | Digital I/O supply. |
| 2 | GND_2 | Ground | Ground | Ground pin. |
| 3 | RESERVED_2 | Reserved | Not Connected or Unspecified | Reserved; do not use as functional signal. |
| 4 | GND_3 | Ground | Ground | Ground pin. |
| 5 | GND | Ground | Ground | Ground pin. |
| 6 | VS | Power | Power In | Main supply. |
| 7 | ~CS | Digital Interface | Input | SPI chip select / I²C mode selection behavior depends on interface mode. |
| 8 | INT1 | Interrupt Outputs | Output | Interrupt 1 output. |
| 9 | INT2 | Interrupt Outputs | Output | Interrupt 2 output. |
| 10 | NC | No Connect | Not Connected | No connect. |
| 11 | RESERVED | Reserved | Not Connected or Unspecified | Reserved; do not use as functional signal. |
| 12 | SDO/ALT_ADDRESS | Digital Interface | Bi-Directional or Output | SPI SDO / I²C alternate address select; choose final pin type based on Flux library convention. |
| 13 | SDA/SDI/SDIO | Digital Interface | Bi-Directional | I²C SDA / SPI SDI / 3-wire SDIO. |
| 14 | SCL/SCLK | Digital Interface | Input | I²C/SPI clock. |
Suggested symbol/section grouping
For this 14-pin sensor, I would keep it as a single symbol but assign these
Section / Pin Group values:- Power: pins 1, 6
- Ground: pins 2, 4, 5
- Digital Interface: pins 7, 12, 13, 14
- Interrupt Outputs: pins 8, 9
- Reserved: pins 3, 11
- No Connect: pin 10
This satisfies the no-duplicate rule: all 14 physical pins are accounted for exactly once.
Recommended groups
Per-pin assignment checklist
Suggested symbol/section grouping
