component
ST25R3915-AQFT
Public Made by Adomby adom
STMicroelectronics RFID ICs, QFN-32(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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ST25R3915-AQFT
STMicroelectronics · RFID ICs · QFN-32(5x5)
ST25R3915-AQFT from STMicroelectronics, in a QFN-32(5x5). 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 | VDD_IO | power_in | Positive supply for peripheral communication, operating range 1.65 to 5.5 V. |
| 2 | CSO | output | Capacitive sensor output; pin is in the 3 V domain with an operating voltage range of -0.5 to 3.6 V. |
| 3 | VSP_D | power_out | Digital supply regulator output; pin is in the 3 V domain with an operating voltage range of -0.5 to 3.6 V. |
| 4 | XTO | output | Crystal oscillator output; supports a 13.56 or 27.12 MHz crystal with fast start-up. |
| 5 | XTI | input | Crystal oscillator input; supports a 13.56 or 27.12 MHz crystal, and the pin is limited to -0.5 to 3.6 V. |
| 6 | VSN_D | power_in | Digital ground, nominally 0 V. |
| 7 | VSP_A | power_out | Analog supply regulator output; pin is in the 3 V domain with an operating voltage range of -0.5 to 3.6 V. |
| 8 | VDD | power_in | External positive supply, operating range 2.4 to 5.5 V (absolute maximum 6.0 V). |
| 9 | VSP_RF | power_out | Supply regulator output for the antenna drivers; pin is in the 5 V domain with an operating voltage range of -0.5 to 5.5 V. |
| 10 | RFO1 | output | Antenna driver output 1 (differential or single-ended), with a driver current of 0 to 500 mA and a 5 V domain limit of -0.5 to 5.5 V. |
| 11 | RFO2 | output | Antenna driver output 2 (differential or single-ended), with a driver current of 0 to 500 mA and a 5 V domain limit of -0.5 to 5.5 V. |
| 12 | VSN_RF | power_in | Ground of the antenna drivers, nominally 0 V. |
| 13 | TRIM1_3 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 14 | TRIM2_3 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 15 | TRIM1_2 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 16 | TRIM2_2 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 17 | TRIM1_1 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 18 | TRIM2_1 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 19 | TRIM1_0 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 20 | TRIM2_0 / NC | unconnected | Not connected on the ST25R3915; the TRIM antenna tuning input is available only on the ST25R3914. |
| 21 | VSS | power_in | Ground and die substrate potential, 0 V. |
| 22 | RFI1 | input | Receiver input 1; RFI amplitude 0.150 to 3 Vpp for NFC receive, with 2.5 Vpp recommended in HF reader and NFC transmit modes. |
| 23 | RFI2 | input | Receiver input 2; RFI amplitude 0.150 to 3 Vpp for NFC receive, with 2.5 Vpp recommended in HF reader and NFC transmit modes. |
| 24 | AGD | bidirectional | Analog reference voltage; pin is in the 3 V domain with an operating voltage range of -0.5 to 3.6 V. |
| 25 | CSI | input | Capacitive sensor input; pin is in the 3 V domain with an operating voltage range of -0.5 to 3.6 V. |
| 26 | VSN_A | power_in | Analog ground, nominally 0 V. |
| 27 | IRQ | output | Interrupt request output; peripheral IO pin with an operating voltage range of -0.5 to 5.5 V. |
| 28 | MCU_CLK | output | Microcontroller clock output; peripheral IO pin with an operating voltage range of -0.5 to 5.5 V. |
| 29 | MISO | tri_state | Serial Peripheral Interface data output, tri-stateable; peripheral IO pin with an operating voltage range of -0.5 to 5.5 V. |
| 30 | MOSI | input | Serial Peripheral Interface data input; CMOS input with an operating voltage range of -0.5 to 5.5 V. |
| 31 | SCLK | input | Serial Peripheral Interface clock input; CMOS input with an operating voltage range of -0.5 to 5.5 V. |
| 32 | /SS | input | Serial Peripheral Interface enable, active low; CMOS input with an operating voltage range of -0.5 to 5.5 V. |
| 33 | VSS | power_in | Exposed pad: ground and die substrate potential, to be connected to VSS on the PCB. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | QFN-32(5x5) |
| Category | RF And Wireless |
| Pins | 33 |
CAD (KiCad official)
- Symbol:
ST25R3915-AQFT - Footprint:
Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm - 3D model: QFN-32(5x5) (KiCad packages3D, STEP)
- 3D model files:
st25r3915-aqft-etched.step/st25r3915-aqft-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);st25r3915-aqft.step/st25r3915-aqft.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (128 pp, sha256
3a63adf1e0f82121, retrieved 2026-10-08, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).