Mechanical Dimensions & Land Pattern (QFN-32-EP(5x5))
Extracted from Datasheet & IPC-7351B NormalizedRecommended Companion BOM & Drop-In Equivalents
Passive external components per reference schematic and 1:1 pin-compatible alternatives| Designator / Replacement MPN | Value / Package | Function & PCB Layout Rule |
|---|---|---|
| N/A BOM | Per application circuit QFN-32-EP(5x5) | Size power & signal trace widths for rated load current following IPC-2221 clearance rules. |
Technical Frequently Asked Questions (FAQ) — AT86RF231-ZU (QFN-32-EP(5x5))
Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formatsWhat is the Pinout and operating voltage specification of AT86RF231-ZU (QFN-32-EP(5x5))?
Manufactured by MICROCHIP, the AT86RF231-ZU is housed in a QFN-32-EP(5x5) package with 33 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 1.8V to 3.6V. Key pins include: 1 (DIG3: Multiplexed I/O & Peripheral Pin DIG3 (General)), 2 (DIG4: Multiplexed I/O & Peripheral Pin DIG4 (General)), 3 (AVSS: Ground Reference Pin (AVSS)), 4 (RFP: Multiplexed I/O & Peripheral Pin RFP (General)), 5 (RFN: Multiplexed I/O & Peripheral Pin RFN (General)), 6 (AVSS: Ground Reference Pin (AVSS)).
What are the IPC-7351B PCB Footprint dimensions for AT86RF231-ZU?
Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), AT86RF231-ZU (QFN-32-EP(5x5)) has a nominal body envelope of 5.00 × 5.00 mm, pitch e = 0.50 mm, and 33 copper pads plus a central exposed thermal pad (EPAD) of 3.30 × 3.30 mm with a 60% IPC-7525 windowed solder paste grid.
Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for AT86RF231-ZU?
You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for AT86RF231-ZU (MICROCHIP, QFN-32-EP(5x5)) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.
Static Reference Appendix: Pinout Table (33 pins) & AT86RF231 Family VariantsExpand static table
| Pin # | Signal Name | Electrical Type | Functional Description & Design Notes |
|---|---|---|---|
| 1 | DIG3 | Digital_IO | Signal terminal DIG3 (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: DIG3. Supported peripheral buses: General. |
| 2 | DIG4 | Digital_IO | Signal terminal DIG4 (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: DIG4. Supported peripheral buses: General. |
| 3 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 4 | RFP | RF_50Ohm | Signal terminal RFP (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: RFP. Supported peripheral buses: General. |
| 5 | RFN | RF_50Ohm | Signal terminal RFN (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: RFN. Supported peripheral buses: General. |
| 6 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 7 | DVSS | GND | 0V electrical ground return terminal (DVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 8 | /RST | Digital_IO | Signal terminal /RST (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: /RST. Supported peripheral buses: General. |
| 9 | DIG1 | Digital_IO | Signal terminal DIG1 (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: DIG1. Supported peripheral buses: General. |
| 10 | DIG2 | Digital_IO | Signal terminal DIG2 (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: DIG2. Supported peripheral buses: General. |
| 11 | SLP_TR | Digital_IO | Signal terminal SLP_TR (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: SLP_TR. Supported peripheral buses: General. |
| 12 | DVSS | GND | 0V electrical ground return terminal (DVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 13 | DVDD | Power_In | Primary positive power supply input (DVDD) operating in the 1.8V to 3.6V domain (Max rating: 3.6V). |
| 14 | DVDD | Power_In | Primary positive power supply input (DVDD) operating in the 1.8V to 3.6V domain (Max rating: 3.6V). |
| 15 | DEVDD | Power_In | Primary positive power supply input (DEVDD) operating in the 1.8V to 3.6V domain (Max rating: 3.6V). |
| 16 | DVSS | GND | 0V electrical ground return terminal (DVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 17 | CLKM | Digital_IO | Signal terminal CLKM (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: CLKM. Supported peripheral buses: General. |
| 18 | DVSS | GND | 0V electrical ground return terminal (DVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 19 | SCLK | Digital_IO | Signal terminal SCLK (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: SPICLOCK. Supported peripheral buses: SPI, I2C. |
| 20 | MISO | Digital_IO | Signal terminal MISO (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: SPIDATAOUTPUT. Supported peripheral buses: SPI. |
| 21 | DVSS | GND | 0V electrical ground return terminal (DVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 22 | MOSI | Digital_IO | Signal terminal MOSI (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: SPIDATAINPUT. Supported peripheral buses: SPI. |
| 23 | /SEL | Digital_IO | Signal terminal /SEL (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: SPISELECT. Supported peripheral buses: SPI. |
| 24 | IRQ | Digital_IO | Signal terminal IRQ (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: IRQ. Supported peripheral buses: General. |
| 25 | XTAL2 | Digital_IO | Signal terminal XTAL2 (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: XTAL2. Supported peripheral buses: RTC/CLK. |
| 26 | XTAL1 | Digital_IO | Signal terminal XTAL1 (I/O, 1.8V to 3.6V domain). Multiplexed alternate functions: XTAL1. Supported peripheral buses: RTC/CLK. |
| 27 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 28 | EVDD | Power_In | Primary positive power supply input (EVDD) operating in the 1.8V to 3.6V domain (Max rating: 3.6V). |
| 29 | AVDD | Power_In | Primary positive power supply input (AVDD) operating in the 1.8V to 3.6V domain (Max rating: 3.6V). |
| 30 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 31 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 32 | AVSS | GND | 0V electrical ground return terminal (AVSS) for internal core logic, I/O drivers, and analog sub-blocks. |
| 33 | EP | GND | Bottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return. |








