Part Review and Datasheet Update


Review all available part information (MPN, package, pin count, description, properties). If no datasheet URL is already set, search the web for the official datasheet and update the part's Datasheet property with the URL. Then cross-check the schematic symbol, footprint, and pin descriptions against the datasheet. Summarize key specs and flag any mismatches.
I’ll inspect the part metadata, find/update the official datasheet if needed, then compare the symbol, footprint, and pin descriptions against the datasheet and summarize any mismatches.
The part project has no Datasheet URL set, and the official Semtech product page doesn’t expose a public datasheet PDF in the accessible page content. I’m checking alternate official/resource pages and distributor references before deciding whether to flag it as unavailable rather than setting a non-datasheet link.
Completed the LR2021IMLTRT part review and saved the detailed findings in LR2021IMLTRT Part Review.
Open items:
  • No public official Semtech LR2021 datasheet PDF was found, so I did not set the Datasheet URL to a non-datasheet page.
  • Pin-by-pin verification is blocked until the official Semtech datasheet/package drawing is available.
  • Main flagged issue: exposed pad is represented as GND pin 0; plausible for 32-VFQFN EP, but it should be confirmed and possibly renamed EP/GND.
Suggested next steps:
  1. Upload or provide Semtech’s official LR2021 datasheet if you have access.
  2. Confirm whether exposed pad numbering should be 0, 33, or EP.
  3. I can then update the Datasheet URL and correct any symbol/footprint mismatches.
Use uploaded datasheet
Fix exposed pad
Search gated docs
Run ERC DRC
Improve pin descriptions

Name
Pin #
Type
Section
Pin Group
Orientation
Order
Sub-symbol
EP
0
Power In
Bottom
VR_PA
1
Power In
VPAX2
2
Power In
NTC
3
Passive
XTA
4
Input
XTB
5
Input
VTCXO/VNTC
6
Power In
DIO11
7
Bi-Directional
DIO10
8
Bi-Directional
DIO9
9
Bi-Directional
DIO8
10
Bi-Directional
DIO7
11
Bi-Directional
VDCC1
12
Power In
Top
VPAX1
13
Power In
LXB
14
Passive
GND_DCC
15
Power In
LXA
16
Passive
VBAT
17
Power In
Top
DIO6
18
Bi-Directional
DIO5
19
Bi-Directional
~{RESET}
20
Input
MISO
21
Output
MOSI
22
Input

LR2021IMLTRT