PAN B611-1 — nRF54L15 MCU module (U1)¶
The Panasonic PAN B611-1 is the MCU/radio module used as U1 on all six nRF54 boards (Tag 230220, Station 232200–232204). This page is the single source of truth for module-level facts: ordering variants, the module-pin ↔ nRF54-GPIO mapping, footprint/keep-out rules, and certifications.
Board documentation references signals by nRF54 GPIO name only (P1.04, P0.03, …) — the mapping to physical module pins lives here. See Firmware Compatibility for the function-per-board GPIO master table.
| Manufacturer | Panasonic Industry |
| Ordering number used | ENW89861B01F (chip antenna + onboard 32.768 kHz crystal) |
| SoC | Nordic nRF54L15 CSP47 (CAAA) — derived 2026-08-16: the module exposes P1.15, which only the CSP47 package has (QFN48 lacks it, per nRF54L15 DS v1.0 §10.1); confirm with Panasonic as a formality |
| Dimensions | 10.35 × 9.80 × 1.90 mm (stepped-pin package) |
| Crystals | 32 MHz + 32.768 kHz integrated (B01F variant) |
| RF | Internally matched; on-board chip antenna = TDK ANT016008LCS2442MA1 (0603 multilayer, 1.6 dBi typ, VSWR 1.6 typ) — identified from the FCC filing's antenna exhibit (local copy, fccid.io T7V-B611) |
| Antenna keep-out | 5.0 × 3.25 mm, all layers (Product Specification p. 24) |
| TX / RX | −8…+8 dBm / −96 dBm @ 1 Mbps (−94 dBm @ 2 Mbps) — +8 dBm is consistent with Nordic's package spec (CSP = 8 dBm, QFN = 7 dBm; nRF54L15 DS v1.0) since the module is CSP47-based |
| Est. price | ~8–10 USD @ 10k; MOQ 500 |
| Datasheet | PAN B611-1 Product Specification Rev 1.0 |
Ordering variants¶
| Order number | Antenna | 32 Mbit flash | 32.768 kHz crystal | Used by EverTag |
|---|---|---|---|---|
| ENW89861A01F | Chip antenna | ✓ | ✓ | — |
| ENW89861B01F | Chip antenna | — | ✓ | ✓ (all boards) |
| ENW89861C01F | Chip antenna | — | — | — |
| ENW89861D01F | RF-bottom pad | ✓ | ✓ | — |
| ENW89861E01F | RF-bottom pad | — | ✓ | — |
| ENW89861F01F | RF-bottom pad | — | — | — |
Design depends on the onboard 32.768 kHz crystal
No EverTag PCB carries an LFXO footprint — the LFCLK source is the module-internal crystal of the B01F variant (module pins D1/E1 = P1.00/P1.01 are used internally; on the external-crystal variant ENW89861A3KF they would be exposed). Any module substitution must provide the crystal on-module or add one to the PCB.
Module pin ↔ nRF54 GPIO mapping¶
23 stepped edge pins (1–23) + 20 LGA matrix pads (A1–E4). Signal functions per board: GPIO Mux Master Table.
| Module pin | nRF54 pin | Module pin | nRF54 pin |
|---|---|---|---|
| 1 | P0.01 | 18 | P2.06 |
| 2 | P0.02 | 19 | P2.07 |
| 3 | P0.03 | 20 | P2.08 |
| 4 | P0.04 | 21 | P2.09 |
| 5 | SWDCLK | 22 | P2.10 |
| 6 | SWDIO | 23 | nRESET |
| 7 | RF (N/C on B01F) | A1 | P1.09 |
| 8, 9, 17 | GND | A2 | P1.10 |
| 10 | P1.07 (AIN3) | A3 | P0.00 |
| 11 | P1.06 (AIN2) | A4, D2, E2 | GND |
| 12 | P1.05 (AIN1) | B1 | P1.12 (AIN5) |
| 13 | P1.04 (AIN0) | B2 | P1.13 (AIN6) |
| 14 | P1.03 / NFC2 | B3 | P1.11 (AIN4) |
| 15 | P1.02 / NFC1 | B4 | P1.08 |
| 16 | VCC | C1 | P1.15 |
| — | — | C2 | P1.14 (AIN7) |
| — | — | C3 | P2.05 / QSPI_CS |
| — | — | C4 | P2.00 / QSPI_D3 |
| — | — | D1 | P1.00 (LFXO, internal on B01F) |
| — | — | D3 | P2.04 / QSPI_D1 |
| — | — | D4 | P2.02 / QSPI_D0 |
| — | — | E1 | P1.01 (LFXO, internal on B01F) |
| — | — | E3 | P2.03 / QSPI_D2 |
| — | — | E4 | P2.01 / QSPI_SCK |
All 32 nRF54L15 GPIOs and all 8 SAADC inputs (AIN0–AIN7) are exposed.
Layout rules (B1)¶
- Footprint: stepped-pin land pattern per Product Specification — pads extend outside the silkscreen outline for AOI (Rev B1 ECN-08/ECN-09); one shared Altium footprint cell for all six boards.
- Antenna keep-out: 5.0 × 3.25 mm copper-free on all layers under the antenna area (Rev B1 ECN-03/ECN-04).
-
Supply decoupling is a specified requirement, not a recommendation. Product Specification §5.1 Design Note 3: "The supply voltage must be free of AC ripple voltage… For noisy supply voltages, provide a decoupling circuit (for example a ferrite in series connection and a bypass capacitor to ground of at least 47 µF directly at the module)." The EverTag rail is fed by a TPS62160 switching regulator at 2.25 MHz, which is a noisy supply by this definition.
⚠️ This requirement is not met on B1 hardware — no series ferrite and no ≥47 µF bulk capacitor exists at the module VDD pin in the current design. Tracked as ECN-33: the series ferrite is adopted (decided 2026-09-10), the bulk capacitor is gated on a bench measurement of the TX-burst droop. Note the condition is "for noisy supply voltages" — it applies to the Station boards, fed from the TPS62160 buck, and not to 230220, where the module runs directly off the cell. The AN54LV-15 articles need their own basis for this: the requirement quoted above is Panasonic's, from the PAN B611-1 Product Specification, and the Raytac AN54LV-15 datasheet states no equivalent rule — its reference circuit (DS §8) shows only C10 4.7 µF at VDD_NRF (pad 20). The concern may well be valid on both modules, but argue it from Nordic's own nRF54L15 reference circuit rather than by extending Panasonic's wording to a Raytac part. - No external RF routing or matching on the host PCB. - Standard reflow profile.
Certifications (modular)¶
| Region | ID / status |
|---|---|
| FCC (US) | T7V-B611 (modular) |
| ISED (Canada) | 216Q-B611 |
| EU | CE RED |
| UK | UKCA |
| Japan | MIC/TELEC |
| China | SRRC |
| Australia/NZ | RCM |
Integration conditions (antenna, TX limits, trace rules) must be respected to keep the grants valid — see Modular Integration Strategy and Labeling.
Sourcing¶
- Panasonic PAN B611-1 product page
- Distributors: Mouser, Rutronik, Avnet. MOQ 500 (samples in any quantity via distribution).