Part Data Review and Update

Thought for 3 mins 30 sec

I reviewed the current part data and compared it against the datasheet-driven audit workflow, where the datasheet is the source of truth for pin identity/count and project properties should be updated using the exact existing property names to avoid duplicates

Summary

Table

Item	Current project	Datasheet / audit finding	Status
MPN	`EC21EFA-512-STD`	Variant of Quectel EC21 series	Mostly OK
Manufacturer	`Quectel`	Quectel Wireless Solutions Co., Ltd.	OK
Datasheet URL	Present already	URL exists, so no web search/update was required	OK
Package	`Module`	LCC package, 32.0 mm x 29.0 mm x 2.4 mm	Too generic
Description	`LTE Category 1 Module 3.8V LCC`	Reasonable, but could be more specific	Acceptable
Supply	Not in properties shown	3.3 V to 4.3 V, 3.8 V typ	Missing from part metadata
Temperature	Not in properties shown	-35 C to +75 C, extended -40 C to +85 C	Missing from part metadata
LTE category	In description only	LTE Cat 1	OK
Physical pad count	Layout/symbol model shows 132 pads/terminals	Datasheet package has 144 pads total	Needs interpretation
Pin typing	Sampled terminals all show `Pin Type: Unspecified`	Datasheet provides enough info to map types	Mismatch
Pin descriptions	Not visible on sampled terminals	Datasheet provides functions/descriptions	Missing/incomplete

Key specs from the datasheet

Cellular module: LTE Cat 1
Data rate: up to 10 Mbps downlink / 5 Mbps uplink
Supply: 3.3 V to 4.3 V, 3.8 V typical
Temperature: -35 C to +75 C, extended -40 C to +85 C
Package: LCC, 32.0 mm x 29.0 mm x 2.4 mm
Package pad structure: 144 total pads made up of 80 LCC + 64 LGA/other pads

Cross-check findings 1) Datasheet URL

The part already has a Datasheet URL set, so your “if missing, find one and update it” condition does not apply here.
I did not need to search the web.

2) Symbol / terminal count

The schematic currently contains 132 terminal components.
The datasheet package has 144 total pads.
However, the datasheet also marks pins 73-84 as reserved keepout pads that “should not be designed in schematic/PCB.” That is 12 pads, and 144 - 12 = 132.
So the current 132-terminal model appears internally consistent if your intent is to omit the keepout-only reserved pads. The sync guidance normally says to match datasheet pin count exactly unless there is a documented reason not to, and this looks like one of those documented exceptions

3) Pin naming mismatches

I found clear evidence that the symbol is not fully aligned to the datasheet pin names:

AP_READY and PCM_IN are present with expected names.
But multiple datasheet-defined pins were not found by their official names in the project search, including signals like USB_BOOT, the SDC2_* group, VDD_SDIO, SD_INS_DET, Bluetooth/WLAN coexistence pins, and several Ethernet/SGMII pins.
That strongly suggests those pads are currently represented as generic RESERVED_* terminals or otherwise renamed.

4) Pin type and pin description quality

The sampled terminals I inspected, such as ADC1, PWRKEY, and USB_VBUS, all show Pin Type: Unspecified.
For an IC/module part like this, that is a significant metadata gap. The recommended sync workflow is to assign exact Pin Number, Pin Type, short Pin Description, plus Section, Pin Group, and Pin Orientation where applicable
I also did not see pin-description properties in the sampled terminal data, so those appear to be missing or incomplete.

5) Footprint cross-check

The layout contains a footprint with 132 pads, matching the current symbol representation.
From the available layout output, I can confirm the footprint exists and pad identities are present, but I cannot fully verify pad geometry, pad sizes, or XY placement against the recommended land pattern because the tool output here did not include the detailed footprint dimensions.
So:
- Pad-count consistency: looks OK for the 132-pad usable-pin interpretation
- Mechanical land-pattern accuracy: not fully verified yet

Main issues to flag

Symbol terminal names are partially wrong or too generic
Pin types are unassigned
Pin descriptions are missing/incomplete
Package property is too generic (Module instead of a clearer LCC package designation)
Electrical metadata like operating voltage and temperature range are not populated
Footprint geometry was not fully verifiable from the data returned

I can perform the cleanup pass next:

normalize the project properties,
preserve the existing Datasheet URL,
and align the terminal metadata to the datasheet naming/type conventions without creating duplicate properties

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