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CC2531F256RHAR

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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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CC2531F256RHAR

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

CC2531F256RHAR 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 DGND_USB power_in Ground connection for USB interface pads.
2 USB_P bidirectional USB differential data plus (D+) signal connection.
3 USB_N bidirectional USB differential data minus (D-) signal connection.
4 DVDD_USB power_in 3.3V power supply connection for USB pads.
5 P1_5 bidirectional Digital I/O port 1.5 pin.
6 P1_4 bidirectional Digital I/O port 1.4 pin.
7 P1_3 bidirectional Digital I/O port 1.3 pin.
8 P1_2 bidirectional Digital I/O port 1.2 pin.
9 P1_1 bidirectional Digital I/O port 1.1 pin 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 pin with 20-mA drive capability.
12 P0_7 bidirectional Digital I/O port 0.7 pin.
13 P0_6 bidirectional Digital I/O port 0.6 pin.
14 P0_5 bidirectional Digital I/O port 0.5 pin.
15 P0_4 bidirectional Digital I/O port 0.4 pin.
16 P0_3 bidirectional Digital I/O port 0.3 pin.
17 P0_2 bidirectional Digital I/O port 0.2 pin.
18 P0_1 bidirectional Digital I/O port 0.1 pin.
19 P0_0 bidirectional Digital I/O port 0.0 pin.
20 RESET_N input Active-low reset signal input.
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 signal for LNA input during receive and PA output during transmit.
26 RF_N bidirectional Negative RF signal for LNA input during receive and PA output during transmit.
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 bidirectional External precision bias resistor for reference current connection.
31 AVDD6 power_in 2-V to 3.6-V analog power-supply connection.
32 P2_4/XOSC32K_Q1 bidirectional Digital I/O port 2.4 or 32.768-kHz crystal oscillator pin 1.
33 P2_3/XOSC32K_Q2 bidirectional Digital I/O port 2.3 or 32.768-kHz crystal oscillator pin 2.
34 P2_2 bidirectional Digital I/O port 2.2 pin.
35 P2_1 bidirectional Digital I/O port 2.1 pin.
36 P2_0 bidirectional Digital I/O port 2.0 pin.
37 P1_7 bidirectional Digital I/O port 1.7 pin.
38 P1_6 bidirectional Digital I/O port 1.6 pin.
39 DVDD1 power_in 2-V to 3.6-V digital power-supply connection.
40 DCOUPL power_in 1.8-V digital power-supply decoupling connection; do not use for external circuit power.
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 & Radio
Pins 41

CAD (KiCad official)

  • Symbol: CC2531F256RHAR
  • 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: cc2531f256rhar-etched.step / cc2531f256rhar-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cc2531f256rhar.step / cc2531f256rhar.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (43 pp, sha256 c45dac1eac9cf199, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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