Part Review and Datasheet Validation

flux

Completed the RM1262 / 453-00139R part review and saved the detailed findings in part-review-rm1262-453-00139r.
Open items:
  • Datasheet URL was already set; no update needed.
  • Pin numbers/names match the datasheet’s 47-pin RM126x pinout.
  • Flagged issues: missing project Part Type, unspecified terminal Pin Types, missing terminal Pin Descriptions, and footprint geometry not fully verifiable from the available layout readout.
Suggested next steps:
  1. Populate terminal Pin Type and Pin Description fields from the datasheet.
  2. Set the project Part Type.
  3. Verify/import the official Ezurio RM126x footprint land pattern for dimensional confirmation.
A

adrian95

Populate all terminal Pin Type and Pin Description fields from the RM126x datasheet.

flux

I’ll update each of the 47 terminals with datasheet-based Pin Type and Pin Description, then re-read the symbol to verify the fields are populated.

flux

Populated Pin Type and Pin Description for all 47 RM126x terminals from the datasheet, using standard Flux pin type values like Ground, Power In, Bi-Directional, Input, Output, and Not Connected.
Open items:
  • None from this update; component review checks for terminals/missing properties now show no open warnings or errors.
Suggested next steps:
  1. Verify the symbol visually for preferred grouping/placement.
  2. Cross-check or import the official Ezurio land pattern if you want footprint dimensional validation.
Check symbol and footprint
Review symbol placement
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Part Review: RM1262 / 453-00139R
Reviewed: 2026-06-16
Project metadata
  • Project/part name: 453-00139R
  • Description: Sub-GHz Modules Module, RM1262, SX1262, MHF4, Tape and Reel
  • Published as part: yes
  • Part UID: d003b2fd-0d39-4e52-8a86-924625b671f1
  • Manufacturer Part Number: 453-00139R
  • Manufacturer Name: Laird / Ezurio
  • Datasheet URL: https://www.lairdconnect.com/documentation/datasheet-rm126x-lorawan-module
  • Designator Prefix: IC
  • Pads/terminals in project: 47
The Datasheet URL was already present, so no Datasheet property update was required.
Official datasheet source
  • Title: RM126x LoRaWAN Module Datasheet
  • Datasheet file/revision indicated by official page: EZ-DS-RM126x_v2_5.pdf / Version 2.5
  • Ordering table confirms 453-00139R = Module, RM1262, SX1262, MHF4, Tape / Reel packaging version.
Key specifications from datasheet
  • Module: RM1262 LoRaWAN module based on Silicon Labs EFR32 SoC and Semtech SX1262 radio
  • RF connector: MHF4
  • Frequency support listed: 863–870 MHz and 902–928 MHz; RM1262 certifications called out for USA, Canada, Australia, New Zealand / 902–928 MHz regions
  • LoRaWAN: LoRaWAN 1.0.4 End Device; classes A, B, and C; RP002-1.0.3 regional parameters
  • MCU resources: Cortex-M33, 512 kB Flash, 32 kB RAM
  • Interfaces: up to 16 GPIO/SWD/UART/I2C/SPI/analog/PWM/frequency functions depending firmware mode
  • Operating supply: datasheet recommended supply pins 2.0–3.7 V, typ. 3.3 V; RM1262 needs 3.3 V minimum on VDD_SX1262 for full 22 dBm TX
  • TX power: RM1262 up to 22 dBm conducted at MHF4 at 3.3–3.6 V; programmable down to -9 dBm
  • Peak TX current: approximately 107–111 mA at 22 dBm, frequency-dependent; typical RX current 8.1 mA LoRa / 7.6 mA FSK
  • Sleep current: about 2.1–2.6 µA depending sleep mode
  • Physical dimensions: 14 mm x 13 mm x 2 mm; weight 0.9 g
  • Operating/storage temperature: -40 °C to +85 °C
  • MSL: MSL4
Pinout cross-check
The project symbol has 47 terminal components, matching the 47-pin module pinout in the datasheet. Pin-number/name mapping observed in the schematic matches the datasheet top-view pinout:
  • 1 GND
  • 2 GND
  • 3 VDD_RADIO
  • 4 GND
  • 5 PD02
  • 6 PD03
  • 7 GND
  • 8 VMCU
  • 9 GND
  • 10 VDD_IO
  • 11 GND
  • 12 PC05
  • 13 PC04
  • 14 PC03
  • 15 PC02
  • 16 PC01
  • 17 PC00
  • 18 PC07
  • 19 PC06
  • 20 RESETN / RESETn
  • 21 GND
  • 22 NC
  • 23 NC
  • 24 GND
  • 25 GND
  • 26 GND
  • 27 NC
  • 28 GND
  • 29 GND
  • 30 GND
  • 31 GND
  • 32 PB04
  • 33 PB03
  • 34 PB02
  • 35 GND
  • 36 VDD_SX1262
  • 37 PA01
  • 38 PA02
  • 39 PA03
  • 40 GND
  • 41 GND
  • 42 GND
  • 43 GND
  • 44 GND
  • 45 GND
  • 46 GND
  • 47 GND
Footprint cross-check
The project layout contains a default footprint with 47 pad nodes and associated fab/silk/text shapes. The 47 pad count matches the datasheet pin count. The datasheet states host PCB land pattern guidance is in Section 7.2 and notes no exposed copper under the module, but the extracted layout data did not expose individual pad geometry/dimensions, so dimensional land-pattern verification could not be completed from the available readout.
Mismatches / issues flagged
  1. Project property missing: Part Type is not set. The component review check reports this as a warning.
  2. Terminal Pin Type is Unspecified on every terminal. This is not a pin-number mismatch, but pin electrical types/descriptions are incomplete compared with datasheet functions.
  3. Pin Description properties appear absent from terminals. Datasheet comments such as supply tie requirements, NC do-not-connect notes, RESETn 1.8 V limitation, BOOT behavior, and SWD/UART functions are not captured in the symbol terminal properties.
  4. Footprint pad count matches, but pad geometry/land-pattern dimensions were not available in the layout inspection output, so footprint dimensions remain unverified.
  5. Datasheet uses RESETn capitalization; project uses RESETN. This is a harmless naming/case difference, not a functional pin mismatch.
  • Set project Part Type to an appropriate module/IC classification.
  • Populate terminal Pin Type and Pin Description fields from the datasheet pin definitions, especially for power, ground, NC, reset, boot, SWD, UART, and supply-tie constraints.
  • Verify the footprint against the official RM126x Section 7.2 land pattern using pad dimensions/coordinates from the footprint editor or imported official footprint files.

  • Project metadata

  • Official datasheet source

  • Key specifications from datasheet

  • Pinout cross-check

  • Footprint cross-check

  • Mismatches / issues flagged

  • Recommended fixes