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CC2541F128RHAR

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Texas Instruments RF Transceiver ICs, VQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CC2541F128RHAR

Texas Instruments · RF Transceiver ICs · VQFN-40-EP(6x6)

CC2541F128RHAR from Texas Instruments, in a VQFN-40-EP(6x6). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground pin; connect to GND.
2 SCL bidirectional I2C clock or digital I/O; leave floating if not used, and if grounded the internal pull-up is disabled.
3 SDA bidirectional I2C data or digital I/O; leave floating if not used, and if grounded the internal pull-up is disabled.
4 NC unconnected Unused pin; not connected.
5 P1_5 bidirectional Digital I/O Port 1.5.
6 P1_4 bidirectional Digital I/O Port 1.4.
7 P1_3 bidirectional Digital I/O Port 1.3.
8 P1_2 bidirectional Digital I/O Port 1.2.
9 P1_1 bidirectional Digital I/O Port 1.1 with 20-mA drive capability.
10 DVDD2 power_in 2-V to 3.6-V digital power-supply connection.
11 P1_0 bidirectional Digital I/O Port 1.0 with 20-mA drive capability.
12 P0_7 bidirectional Digital I/O Port 0.7.
13 P0_6 bidirectional Digital I/O Port 0.6.
14 P0_5 bidirectional Digital I/O Port 0.5.
15 P0_4 bidirectional Digital I/O Port 0.4.
16 P0_3 bidirectional Digital I/O Port 0.3.
17 P0_2 bidirectional Digital I/O Port 0.2.
18 P0_1 bidirectional Digital I/O Port 0.1.
19 P0_0 bidirectional Digital I/O Port 0.0.
20 RESET_N input Reset input, active-low.
21 AVDD5 power_in 2-V to 3.6-V analog power-supply connection.
22 XOSC_Q1 bidirectional 32-MHz crystal oscillator pin 1 or external clock input.
23 XOSC_Q2 bidirectional 32-MHz crystal oscillator pin 2.
24 AVDD3 power_in 2-V to 3.6-V analog power-supply connection.
25 RF_P bidirectional Positive RF input to the LNA during RX and positive RF output from the PA during TX.
26 RF_N bidirectional Negative RF input to the LNA during RX and negative RF output from the PA during TX.
27 AVDD2 power_in 2-V to 3.6-V analog power-supply connection.
28 AVDD1 power_in 2-V to 3.6-V analog power-supply connection.
29 AVDD4 power_in 2-V to 3.6-V analog power-supply connection.
30 RBIAS passive External precision bias resistor for the reference current.
31 AVDD6 power_in 2-V to 3.6-V analog power-supply connection.
32 P2_4 / OSC32K_Q1 bidirectional Digital I/O Port 2.4, also 32.768-kHz crystal oscillator pin 1.
33 P2_3 / OSC32K_Q2 bidirectional Digital I/O Port 2.3, also 32.768-kHz crystal oscillator pin 2.
34 P2_2/DC bidirectional Digital I/O Port 2.2, also debug clock.
35 P2_1/DD bidirectional Digital I/O Port 2.1, also debug data.
36 P2_0 bidirectional Digital I/O Port 2.0.
37 P1_7 bidirectional Digital I/O Port 1.7.
38 P1_6 bidirectional Digital I/O Port 1.6.
39 DVDD1 power_in 2-V to 3.6-V digital power-supply connection.
40 DCOUPL power_out 1.8-V digital power-supply decoupling; do not use for supplying external circuits.
41 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VQFN-40-EP(6x6)
Category RF And Wireless
Pins 41

CAD (KiCad official)

  • Symbol: CC2541F128RHAR
  • Footprint: Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm
  • 3D model: VQFN-40-EP(6x6) (KiCad packages3D, STEP)
  • 3D model files: cc2541f128rhar-etched.step / cc2541f128rhar-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cc2541f128rhar.step / cc2541f128rhar.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (43 pp, sha256 6b1813796f4e03c7, retrieved 2026-10-07, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF