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CC2541F256RHAR
Public Made by Adomby adom
Texas Instruments RF Transceiver ICs, WQFN-40-EP(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+78@@ -0,0 +1,78 @@+# CC2541F256RHAR++**Texas Instruments** · RF Transceiver ICs · WQFN-40-EP(6x6)++CC2541F256RHAR from Texas Instruments, in a WQFN-40-EP(6x6). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | GND | power_in | Ground connection for digital circuit; must be connected to PCB ground plane and solid ground pour. |+| 2 | SCL | bidirectional | I2C serial clock input or general-purpose I/O pin; leave floating if not used, disable internal pull-up if grounded. |+| 3 | SDA | bidirectional | I2C serial data input/output or general-purpose I/O pin; leave floating if not used, disable internal pull-up if grounded. |+| 4 | NC | unconnected | Not connected; reserved pin that must not be connected to external circuitry. |+| 5 | P1_5 | bidirectional | General-purpose I/O port 1.5 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 6 | P1_4 | bidirectional | General-purpose I/O port 1.4 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 7 | P1_3 | bidirectional | General-purpose I/O port 1.3 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 8 | P1_2 | bidirectional | General-purpose I/O port 1.2 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 9 | P1_1 | bidirectional | General-purpose I/O port 1.1 pin with 20-mA drive capability for LED control or high-current output. |+| 10 | DVDD2 | power_in | 2-V to 3.6-V digital power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 11 | P1_0 | bidirectional | General-purpose I/O port 1.0 pin with 20-mA drive capability for LED control or high-current output. |+| 12 | P0_7 | bidirectional | General-purpose I/O port 0.7 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 13 | P0_6 | bidirectional | General-purpose I/O port 0.6 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 14 | P0_5 | bidirectional | General-purpose I/O port 0.5 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 15 | P0_4 | bidirectional | General-purpose I/O port 0.4 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 16 | P0_3 | bidirectional | General-purpose I/O port 0.3 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 17 | P0_2 | bidirectional | General-purpose I/O port 0.2 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 18 | P0_1 | bidirectional | General-purpose I/O port 0.1 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 19 | P0_0 | bidirectional | General-purpose I/O port 0.0 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 20 | RESET_N | input | Active-low asynchronous reset input; minimum pulse width 1 µs; must stay high during normal operation. |+| 21 | AVDD5 | power_in | 2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 22 | XOSC_Q1 | bidirectional | 32-MHz crystal oscillator pin 1 or external clock input; connect to primary oscillator node or external clock source. |+| 23 | XOSC_Q2 | bidirectional | 32-MHz crystal oscillator pin 2; connect to secondary oscillator node of 32-MHz crystal. |+| 24 | AVDD3 | power_in | 2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 25 | RF_P | bidirectional | Positive differential RF signal input to low-noise amplifier during RX; positive output from power amplifier during TX. |+| 26 | RF_N | bidirectional | Negative differential RF signal input to low-noise amplifier during RX; negative output from power amplifier during TX. |+| 27 | AVDD2 | power_in | 2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 28 | AVDD1 | power_in | 2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 29 | AVDD4 | power_in | 2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 30 | RBIAS | input | Analog input for external precision bias resistor (56 kΩ ±1% recommended); sets internal reference current for on-chip biasing network. |+| 31 | AVDD6 | power_in | 2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 32 | P2_4/OSC32K_Q1 | bidirectional | General-purpose I/O port 2.4 or 32.768-kHz crystal oscillator input pin 1; function selected by firmware configuration. |+| 33 | P2_3/OSC32K_Q2 | bidirectional | General-purpose I/O port 2.3 or 32.768-kHz crystal oscillator input pin 2; function selected by firmware configuration. |+| 34 | P2_2 | bidirectional | General-purpose I/O port 2.2 or debug clock input; dual function for in-circuit debugging. |+| 35 | P2_1 | bidirectional | General-purpose I/O port 2.1 or debug data input/output; dual function for in-circuit debugging. |+| 36 | P2_0 | bidirectional | General-purpose I/O port 2.0 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 37 | P1_7 | bidirectional | General-purpose I/O port 1.7 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 38 | P1_6 | bidirectional | General-purpose I/O port 1.6 pin; configurable as input or output with programmable pull-up/pull-down resistor. |+| 39 | DVDD1 | power_in | 2-V to 3.6-V digital power supply input pin; requires 100-nF decoupling capacitor to ground. |+| 40 | DCOUPL | power_out | 1.8-V output from on-chip digital voltage regulator; requires 1-µF decoupling capacitor; do not use to supply external circuits. |+| 41 | GND (Exposed Pad) | power_in | Thermal and mechanical ground connection from exposed die attach pad; must be soldered to solid PCB ground plane for proper heat dissipation. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | WQFN-40-EP(6x6) |+| Category | RF And Wireless |+| Pins | 41 |++## CAD (KiCad official)++- Symbol: `CC2541F256RHAR`+- Footprint: `Package_DFN_QFN:QFN-40-1EP_6x6mm_P0.5mm_EP4.6x4.6mm`+- 3D model: WQFN-40-EP(6x6) (KiCad packages3D, STEP)+- 3D model files: `cc2541f256rhar-etched.step` / `cc2541f256rhar-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `cc2541f256rhar.step` / `cc2541f256rhar.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/cc2541) (37 pp, sha256 `6a99abaeb2964fdb`, retrieved 2026-09-21, 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 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (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](docs/cc2541f256rhar-datasheet.pdf)
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Datasheet-verified pinout, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "rf and wireless",+ "cc2541f256rhar",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "cc2541f256rhar.kicad_sym",+ "cc2541f256rhar.kicad_mod",+ "cc2541f256rhar.glb",+ "cc2541f256rhar.step",+ "cc2541f256rhar.lbr",+ "docs/hero.png",+ "docs/cc2541f256rhar-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "CC2541F256RHAR",+ "manufacturer": "Texas Instruments",+ "package": "WQFN-40-EP(6x6)",+ "pin_count": 41,+ "category": "RF And Wireless",+ "subcategory": "RF Transceiver ICs",+ "datasheet": "https://www.ti.com/cn/lit/gpn/cc2541",+ "parts": {+ "symbol": "cc2541f256rhar.kicad_sym",+ "footprint": "cc2541f256rhar.kicad_mod",+ "model_3d": "cc2541f256rhar-etched.glb",+ "model_3d_plain": "cc2541f256rhar.glb",+ "model_3d_step": "cc2541f256rhar-etched.step",+ "model_3d_step_plain": "cc2541f256rhar.step",+ "lbr": "cc2541f256rhar.lbr"+ },+ "distributor_links": {+ "lcsc": "C22206"+ },+ "pins": [+ {+ "number": "1",+ "name": "GND",+ "type": "power_in",+ "description": "Ground connection for digital circuit; must be connected to PCB ground plane and solid ground pour."+ },+ {+ "number": "2",+ "name": "SCL",+ "type": "bidirectional",+ "description": "I2C serial clock input or general-purpose I/O pin; leave floating if not used, disable internal pull-up if grounded."+ },+ {+ "number": "3",+ "name": "SDA",+ "type": "bidirectional",+ "description": "I2C serial data input/output or general-purpose I/O pin; leave floating if not used, disable internal pull-up if grounded."+ },+ {+ "number": "4",+ "name": "NC",+ "type": "unconnected",+ "description": "Not connected; reserved pin that must not be connected to external circuitry."+ },+ {+ "number": "5",+ "name": "P1_5",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.5 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "6",+ "name": "P1_4",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.4 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "7",+ "name": "P1_3",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.3 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "8",+ "name": "P1_2",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.2 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "9",+ "name": "P1_1",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.1 pin with 20-mA drive capability for LED control or high-current output."+ },+ {+ "number": "10",+ "name": "DVDD2",+ "type": "power_in",+ "description": "2-V to 3.6-V digital power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "11",+ "name": "P1_0",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.0 pin with 20-mA drive capability for LED control or high-current output."+ },+ {+ "number": "12",+ "name": "P0_7",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.7 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "13",+ "name": "P0_6",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.6 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "14",+ "name": "P0_5",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.5 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "15",+ "name": "P0_4",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.4 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "16",+ "name": "P0_3",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.3 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "17",+ "name": "P0_2",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.2 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "18",+ "name": "P0_1",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.1 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "19",+ "name": "P0_0",+ "type": "bidirectional",+ "description": "General-purpose I/O port 0.0 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "20",+ "name": "RESET_N",+ "type": "input",+ "description": "Active-low asynchronous reset input; minimum pulse width 1 µs; must stay high during normal operation."+ },+ {+ "number": "21",+ "name": "AVDD5",+ "type": "power_in",+ "description": "2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "22",+ "name": "XOSC_Q1",+ "type": "bidirectional",+ "description": "32-MHz crystal oscillator pin 1 or external clock input; connect to primary oscillator node or external clock source."+ },+ {+ "number": "23",+ "name": "XOSC_Q2",+ "type": "bidirectional",+ "description": "32-MHz crystal oscillator pin 2; connect to secondary oscillator node of 32-MHz crystal."+ },+ {+ "number": "24",+ "name": "AVDD3",+ "type": "power_in",+ "description": "2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "25",+ "name": "RF_P",+ "type": "bidirectional",+ "description": "Positive differential RF signal input to low-noise amplifier during RX; positive output from power amplifier during TX."+ },+ {+ "number": "26",+ "name": "RF_N",+ "type": "bidirectional",+ "description": "Negative differential RF signal input to low-noise amplifier during RX; negative output from power amplifier during TX."+ },+ {+ "number": "27",+ "name": "AVDD2",+ "type": "power_in",+ "description": "2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "28",+ "name": "AVDD1",+ "type": "power_in",+ "description": "2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "29",+ "name": "AVDD4",+ "type": "power_in",+ "description": "2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "30",+ "name": "RBIAS",+ "type": "input",+ "description": "Analog input for external precision bias resistor (56 kΩ ±1% recommended); sets internal reference current for on-chip biasing network."+ },+ {+ "number": "31",+ "name": "AVDD6",+ "type": "power_in",+ "description": "2-V to 3.6-V analog power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "32",+ "name": "P2_4/OSC32K_Q1",+ "type": "bidirectional",+ "description": "General-purpose I/O port 2.4 or 32.768-kHz crystal oscillator input pin 1; function selected by firmware configuration."+ },+ {+ "number": "33",+ "name": "P2_3/OSC32K_Q2",+ "type": "bidirectional",+ "description": "General-purpose I/O port 2.3 or 32.768-kHz crystal oscillator input pin 2; function selected by firmware configuration."+ },+ {+ "number": "34",+ "name": "P2_2",+ "type": "bidirectional",+ "description": "General-purpose I/O port 2.2 or debug clock input; dual function for in-circuit debugging."+ },+ {+ "number": "35",+ "name": "P2_1",+ "type": "bidirectional",+ "description": "General-purpose I/O port 2.1 or debug data input/output; dual function for in-circuit debugging."+ },+ {+ "number": "36",+ "name": "P2_0",+ "type": "bidirectional",+ "description": "General-purpose I/O port 2.0 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "37",+ "name": "P1_7",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.7 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "38",+ "name": "P1_6",+ "type": "bidirectional",+ "description": "General-purpose I/O port 1.6 pin; configurable as input or output with programmable pull-up/pull-down resistor."+ },+ {+ "number": "39",+ "name": "DVDD1",+ "type": "power_in",+ "description": "2-V to 3.6-V digital power supply input pin; requires 100-nF decoupling capacitor to ground."+ },+ {+ "number": "40",+ "name": "DCOUPL",+ "type": "power_out",+ "description": "1.8-V output from on-chip digital voltage regulator; requires 1-µF decoupling capacitor; do not use to supply external circuits."+ },+ {+ "number": "41",+ "name": "GND (Exposed Pad)",+ "type": "power_in",+ "description": "Thermal and mechanical ground connection from exposed die attach pad; must be soldered to solid PCB ground plane for proper heat dissipation."+ }+ ],+ "provenance": {+ "extractor": "extract_pins 0.2",+ "factory_chain": {+ "factory": "2.0.0",+ "extractor": "extract_pins 0.2",+ "primary_model": "claude-haiku-4-5-20251001",+ "primary_mode": "text",+ "consensus_model": "claude-sonnet-4-6",+ "consensus": "agreed",+ "guards": "pin_guards 0.1: passed",+ "guard_notes": [+ "extractor flagged: Exposed thermal/ground pad (pin 41) is shown in package diagram and application schematic but not ex; RF_P and RF_N pins require impedance matching network and balun transformer for proper antenna opera; Dual-function pins P2_1, P2_2, P2_3, P2_4 require careful firmware configuration to select between G",+ "1/41 pins cited to the wrong page (name found elsewhere): ['41:GND (Exposed Pad)@p16']"+ ],+ "pages_sent": 37,+ "cost_usd": 0.5225,+ "at": "2026-09-21T18:00:45"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/cc2541",+ "pages": 37,+ "sha256": "6a99abaeb2964fdb",+ "source_tier": "lcsc"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 41,+ "described": 41,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}