Datasheets & Reference Documents¶
Component datasheets used in the EverTag hardware design. PDFs are version-controlled in the repository and deployed with this documentation.
MCU & Radio Modules¶
| Component | Document | Version | Retrieved |
|---|---|---|---|
| Panasonic PAN B611-1 (nRF54L15 module) | Product Specification | Rev 1.0 | 2026-02-25 |
| Nordic nRF54L15 SoC | Datasheet (940 pp, SAADC pin map) | v1.0 | 2026-02-13 |
| Espressif ESP32-C5-WROOM-1 | Module Datasheet CE · FCC 2.4G · FCC 5G IC · MIC 2.4G · MIC 5G KC · SRRC · WFA |
v1.0 | 2026-02-20 |
LTE Modem (Extension Board)¶
| Component | Document | Version | Retrieved |
|---|---|---|---|
| SIMCom SIM7672X Series | Compatible Design Guide | V1.02 | 2026-02-13 |
| SIMCom SIM7672X Series | Sleep Mode Application Note | V1.00 | 2026-02-13 |
| SIMCom A7672 Series | A7672 Series Spec (pinout, electrical) | 2023-04 | 2026-02-20 |
| Quectel YC0001CA (LTE chip antenna) | Datasheet (dimensions, reference PCB, S11) | v2 | 2026-02-20 |
| Quectel YC0001CA (LTE chip antenna) | Product page | — | — |
LTE Chip Antenna — Design Application Notes¶
For the Quectel YC0001CA used on 232210 (LTE EU) and 232211 (LTE US), see the PCB design notes in 232210 §3.4 On-board chip antenna (left-edge placement, WiFi coexistence rationale, ground plane budget, keep-out, matching network). The Quectel reference PCB is 65 × 121 mm; the EverTag extension board is ~36 × 50 mm. Ground plane is extended via 23 GND pins in the dual B2B connectors to the base board.
External design references (general LTE / embedded antenna):
| Source | Content |
|---|---|
| TDK Chip Antenna Design Notes | Matching, tuning, layout by band (registration may be required for PDFs). |
| Antenova application notes | Cellular antenna selection, PCB placement, matching, 50 Ω feed (e.g. Cellular gigaNOVA). |
| TE Connectivity: PCB design for embedded antennas | Isolation from noisy circuitry, ground plane, 50 Ω lines, enclosure effects. |
Supplier Links¶
For the latest datasheet revisions, check the manufacturer documentation portals:
| Manufacturer | Portal | Components |
|---|---|---|
| Nordic Semiconductor | docs.nordicsemi.com | nRF54L15 SoC |
| Panasonic Industry | industry.panasonic.eu | PAN B611 module |
| Espressif | docs.espressif.com | ESP32-C5 WROOM |
| SIMCom | simcom.com/downloads | SIM7672E/NA LTE modem |
| Quectel | quectel.com | YC0001CA chip antenna |
Updating Datasheets
When adding or updating a datasheet, place the PDF in docs/datasheets/ and update the table above with the document version and download date. See README.md "Datasheets Folder" section for naming conventions.