Part Datasheet Review and Validation

flux

I’ll apply the datasheet-backed pin map cleanup, update terminal metadata, correct the part classification, then inspect the footprint geometry against CSP98 expectations.

flux

I have the current pin list and allowed metadata values; next I’m applying the CSP98 ball-map corrections and terminal classifications from the Nordic datasheet.

flux

Completed the pin-map cleanup and verification. The part now has 98 terminals/pads, the stray C7 terminal was removed, P1.21/ now maps to ball C7, pin types/descriptions were updated, and the footprint verifies as a 0.35 mm-pitch CSP98 grid with 98 pads.
Open items:
  • Some schematic terminals still have null visual symbol positions, though their electrical pin numbers and descriptions are now correct.
  • Library-search metadata may still show stale global classification until the part is republished/updated through the library workflow.
Detailed results are in Pin Map Fix Verification — NRF54LM20B-PAAA-R7.
Clean symbol, review, export
Fix symbol positions
Run ERC DRC
Export pin map
Check footprint pads
P1.23
Pin Number
B7
DCC
Pin Number
A5
DECD
Pin Number
A6
P1.30/AIN2
Pin Number
J10
P1.00/AIN0
Pin Number
K8
P1.05/AIN5/ASO[0]
Pin Number
H8
VDD_3
Pin Number
A9
P2.02/
Pin Number
D10
P1.24
Pin Number
D7
VSS_2
Pin Number
A7
D-
Pin Number
K4
P0.08
Pin Number
F3
SWDCLK
Pin Number
G1
P0.05
Pin Number
H3
P0.09
Pin Number
E3
P2.00/FLPR.4/QSPI.D3/SPIM00.DCX/UARTE00.RXD
Pin Number
B10
P1.31/AIN1
Pin Number
K9
P2.08/
Pin Number
D9
P1.09/
Pin Number
E8
VDD_4
Pin Number
G10
P3.09
Pin Number
F7
XC1
Pin Number
A2
P0.04
Pin Number
J1
DECA
Pin Number
A8
P1.19/
Pin Number
B6
P3.10
Pin Number
F4
VDD_2
Pin Number
A4
TXRTUNE
Pin Number
J5
P2.05/
Pin Number
G9
P1.04/AIN6
Pin Number
J9
P0.02
Pin Number
J3
P1.20/RADIO[5]/XL1
Pin Number
C6
P2.10/
Pin Number
F9
VSS_11
Pin Number
K1
P1.08/ASO[1]
Pin Number
F8
P1.22
Pin Number
D6
VSS_1
Pin Number
A1
P3.02
Pin Number
H5
VDD_1
Pin Number
A3
P3.01
Pin Number
H6
VSS_9
Pin Number
F5
P2.09/
Pin Number
E9
P0.03
Pin Number
J2
P1.14
Pin Number
C2
P1.27
Pin Number
C8
VSS_7
Pin Number
E6
P1.02/
Pin Number
J7
P3.07
Pin Number
G5
P3.03
Pin Number
H4
VSS_5
Pin Number
D2
P1.29
Pin Number
H10
P3.05
Pin Number
G7
P1.03/
Pin Number
H9
P2.06/FLPR.6/TRACECLK/SPIM00.SCK/SPIS00.SCK
Pin Number
B9
P2.04/
Pin Number
F10
VSS_6
Pin Number
E5
P1.28
Pin Number
D8
P3.00
Pin Number
H7
P3.12
Pin Number
D4
P1.16/ASI[2]/RADIO[1]
Pin Number
B3
P1.07
Pin Number
G8
DECRF
Pin Number
C1
P0.07
Pin Number
G3
VSS_12
Pin Number
K10
P1.12
Pin Number
C4
NRESET
Pin Number
F2
P1.15/ASO[2]
Pin Number
B2
P1.17/RADIO[2]
Pin Number
B4
VSS_8
Pin Number
F1
P1.26/ASI[3]
Pin Number
B8
P0.01
Pin Number
K2
P1.01/
Pin Number
J6
P0.06
Pin Number
H2
P1.11
Pin Number
C5
P1.25/
Pin Number
E7
SWDIO
Pin Number
G2
P2.01/
Pin Number
C10
VSS_4
Pin Number
D1
P3.11
Pin Number
E4
VSS_10
Pin Number
F6
P3.04
Pin Number
J4
DECUSB
Pin Number
K6
P1.10
Pin Number
D5
P1.18/
Pin Number
B5
P1.06/AIN4/ASI[0]
Pin Number
J8
P1.13
Pin Number
C3
ANT
Pin Number
E1
P3.06
Pin Number
G6
D+
Pin Number
K5
VDD_5
Pin Number
H1
XC2
Pin Number
B1
P3.08
Pin Number
G4
P2.07/
Pin Number
C9
P2.03/
Pin Number
E10
P0.00
Pin Number
K3
P1.21/
Pin Number
C7
VSS_3
Pin Number
A10
VBUS
Pin Number
K7

Refine this doc
Ask about this doc
Part Datasheet Review — NRF54LM20B-PAAA-R7
Sources reviewed
Current part metadata
  • MPN: NRF54LM20B-PAAA-R7
  • Manufacturer: Nordic Semiconductor
  • Description: RF System-on-Chip / wireless SoC, ultra-low-power 2.4 GHz radio + MCU + Axon NPU, 2.0 MB NVM
  • Part type: Integrated Circuits
  • Designator prefix: IC
  • Flux terminal count: 99
  • Library reports datasheet present: yes
  • Mount property in library: Wire
Datasheet key specs
  • Family/device: nRF54LM20B
  • Ordering code: nRF54LM20B-PAAA-R7
  • Package code: PAAA / PA = CSP98
  • Package size: 3.67 mm × 3.85 mm
  • Ball count: 98
  • Ball pitch: 0.35 mm
  • GPIO count: 66
  • NVM: 2036 KB RRAM
  • RAM: 512 KB
  • Axon NPU: present on nRF54LM20B
  • VDD operating range: 1.7 V to 3.6 V
  • VBUS for USB PHY: 3.67 V to 5.5 V, nominal 5.0 V; VBUS cannot power the device
  • Operating temperature: -40 °C to +85 °C
  • Radio: 2.4 GHz multiprotocol transceiver, 2400–2500 MHz
  • Protocol support: Bluetooth LE, IEEE 802.15.4 for Thread/Zigbee, proprietary 2.4 GHz
  • USB: USB 2.0 device, high-speed 480 Mbps / full-speed 12 Mbps / low-speed 1.5 Mbps, no OTG
Pin/ball cross-check findings
Matches observed
Most populated schematic terminal pin numbers match the CSP98 datasheet table, including:
  • VSS balls: A1, A7, A10, D1, D2, E5, E6, F1, F5, F6, K1, K10
  • VDD balls: A3, A4, A9, G10, H1
  • USB balls: D- = K4, D+ = K5, DECUSB = K6, VBUS = K7
  • Debug balls: SWDCLK = G1, SWDIO = G2, NRESET = F2
  • RF/crystal/decoupling examples: ANT = E1, XC1 = A2, XC2 = B1, DECA = A8, DCC = A5, DECD = A6, DECRF = C1, TXRTUNE = J5
  • Populated GPIO examples: P0.00 = K3, P0.09 = E3, P1.30 = J10, P1.31 = K9, P2.00 = B10, P2.06 = B9, P3.00 = H7 through P3.12 = D4 where present
Mismatches / issues flagged
  1. Terminal count mismatch
    • Datasheet package: CSP98 = 98 balls.
    • Flux part project: 99 schematic terminals.
    • Root cause appears to be an extra terminal named C7 with Pin Number = 0, while the real CSP98 ball C7 is P1.21.
  2. Incorrect or extra C7 terminal
    • Datasheet: ball C7 maps to pin name P1.21.
    • Schematic: separate terminal C7 has Pin Number = 0.
    • Schematic also has P1.21/ but with no pin number and invalid/null symbol position.
    • Recommended fix: remove/rename the stray C7 terminal and assign P1.21/ to ball C7.
  3. Several terminals are missing pin numbers and have invalid/null schematic positions
    • P1.01/ should be J6
    • P1.02/ should be J7
    • P1.03/ should be H9
    • P1.07 should be G8
    • P1.09/ should be E8
    • P1.15/ASO[2] should be B2
    • P1.18/ should be B5
    • P1.19/ should be B6
    • P1.21/ should be C7
    • P1.25/ should be E7
    • P1.29 should be H10
    • P2.01/ should be C10
    • P2.02/ should be D10
    • P2.03/ should be E10
    • P2.04/ should be F10
    • P2.05/ should be G9
    • P2.07/ should be C9
    • P2.08/ should be D9
    • P2.09/ should be E9
    • P2.10/ should be F9
  4. Pin Type is generic/unspecified for all terminals inspected
    • Every inspected terminal reports Pin Type: Unspecified.
    • This is not a ball-map mismatch, but it reduces ERC quality. Power pins should be typed as power/ground where possible; GPIO/debug/RF/USB pins should have more specific descriptions/types.
  5. Footprint structure needs cleanup/verification
    • Layout contains terminal pads plus a default footprint with additional Mounts pads for the same ball names.
    • Expected footprint for the package is exactly CSP98, 0.35 mm pitch, 3.67 mm × 3.85 mm.
    • The layout inspection did not expose pad dimensions/coordinates in the returned tree, so exact land pattern geometry could not be fully verified here.
  6. Metadata mismatch: Mount = Wire
    • The library entry reports Mount as Wire.
    • The real part is a surface-mount CSP/WLCSP/BGA-style package.
    • Recommended fix: change Mount/package metadata to SMD / CSP98 or equivalent supported values.
  7. Part type-specific values appear wrong
    • Library entry reports IC type Logic and logic function AND.
    • This is not correct for an RF SoC with MCU/NPU/radio/USB.
    • Recommended fix: update type-specific classification to SoC / RF System-on-Chip / Microcontroller Wireless SoC if supported.
Datasheet URL action
The Flux library entry already had a Datasheet URL set, so no Datasheet URL overwrite was required. I also stored the official Nordic online datasheet location in the project Implementation Details field for traceability: https://docs.nordicsemi.com/r/bundle/ps_nrf54lm20a/
  1. Fix the pin map errors and missing ball numbers listed above.
  2. Remove the extra C7/Pin Number = 0 terminal or merge it into P1.21.
  3. Update terminal pin descriptions/types from the datasheet.
  4. Correct metadata: Mount, package/case, IC subtype/classification.
  5. Re-run symbol/footprint validation after the cleanup and verify the footprint has exactly 98 CSP pads at 0.35 mm pitch.

  • Sources reviewed

  • Current part metadata

  • Datasheet key specs

  • Pin/ball cross-check findings

  • Matches observed

  • Mismatches / issues flagged

  • Datasheet URL action

  • Recommended remediation order

Documents

Assets

NRF54LM20B-PAAA-R7-thumb.png

NRF54LM20B-PAAA-R7-thumb.png

NRF54LM20B-PAAA-R7-thumbThumbnail
NRF54LM20B-PAAA-R7

NRF54LM20B-PAAA-R7

NRF54LM20B-PAAA-R7.stp3D Model

NRF54LM20B-PAAA-R7

NRF54LM20BPAAAR7.kicad_modFootprint

NRF54LM20B-PAAA-R7

NRF54LM20B-PAAA-R7 Symbol.svgDefault

NRF54LM20B-PAAA-R7

NRF54LM20B-PAAA-R7 thumbnail
IC RF TxRx + MCU 802.15.4, Bluetooth Bluetooth v6.0, Matter, Thread, Zigbee® 2.4GHz 98-WFBGA, CSPBGA
Wireless System-on-Chip (SoC) designed for ultra-low-power 2.4 GHz wireless communication, providing an integrated multiprotocol radio for Bluetooth Low Energy and proprietary 2.4 GHz applications, along with an embedded processing subsystem for application and protocol handling.
Supports operation in the 2.4 GHz ISM band and includes digital peripheral interfaces for system integration in embedded wireless designs.
#WirelessSoC #NordicSemiconductor #nRF54L #BluetoothLE #2.4GHz #UltraLowPower #EmbeddedSystem

Properties

Nordic nRF54LM20B-PAAA-R7: CSP98/WFBGA, 98 balls, 0.35 mm pitch, 3.67 x 3.85 mm, Surface Mount; RF SoC with Bluetooth LE, IEEE 802.15.4 Thread/Zigbee, proprietary 2.4 GHz, USB 2.0 device, 2036 KB RRAM, 512 KB RAM. Datasheet: https://docs.nordicsemi.com/r/bundle/ps_nrf54lm20a/

-40 to 85 C

Consumer Electronics

1.7

V

NRF54LM20B-PAAA-R7

Bluetooth

Nordic Semiconductor

Integrated Circuits

docs-be.nordicsemi.com/bundle/ps_nrf54LM20A/page/pdf/nRF54LM20A_nRF54LM20B_Preliminary_Datasheet_v0.8.pdf

IC

parametric-v1

creativecommons.org/licenses/by/4.0/

Pricing & Availability

DPN

Stock

Qty 1

1

0

$6.25

Controls