component
ATSAMD21G17D-AUT
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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ATSAMD21G17D-AUT
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-48(7x7)
ATSAMD21G17D-AUT from Microchip Tech, in a TQFP-48(7x7). 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 | PA00 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[0], SERCOM1/PAD[0] and TCC2/WO[0], and XIN32 (32 kHz crystal input) when XOSC32K is used. |
| 2 | PA01 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[1], SERCOM1/PAD[1] and TCC2/WO[1], and XOUT32 (32 kHz crystal output) when XOSC32K is used. |
| 3 | PA02 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[0] and Y[0] and DAC output VOUT, which require peripheral function B to disable digital control of the pin, plus EXTINT[2] and TCC3/WO[0]. |
| 4 | PA03 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[1] and Y[1], ADC/DAC external reference VREFA, plus EXTINT[3] and TCC3/WO[1]; analog functions require peripheral function B. |
| 5 | GNDANA | power_in | Ground for the analog power domain (VDDANA). |
| 6 | VDDANA | power_in | Analog supply voltage, 1.62 V to 3.63 V, to be decoupled with 100 nF and 10 µF capacitors close to the device. |
| 7 | PB08 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[8], AIN[2], Y[14], SERCOM4/PAD[0], TC4/WO[0] and TCC3/WO[6]. |
| 8 | PB09 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[9], AIN[3], Y[15], SERCOM4/PAD[1], TC4/WO[1] and TCC3/WO[7]. |
| 9 | PA04 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[4], AIN[0] and Y[2], ADC external reference VREFB, plus EXTINT[4], SERCOM0/PAD[0], TCC0/WO[0] and TCC3/WO[2]. |
| 10 | PA05 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[5], AIN[1] and Y[3], plus EXTINT[5], SERCOM0/PAD[1], TCC0/WO[1] and TCC3/WO[3]. |
| 11 | PA06 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[6], AIN[2] and Y[4], plus EXTINT[6], SERCOM0/PAD[2], TCC1/WO[0] and TCC3/WO[4]. |
| 12 | PA07 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[7], AIN[3] and Y[5], plus EXTINT[7], SERCOM0/PAD[3], TCC1/WO[1] and TCC3/WO[5]. |
| 13 | PA08 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions NMI, AIN[16], X[0], SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0] and TCC1/WO[2]; supports SERCOM I2C Hs mode. |
| 14 | PA09 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[9], AIN[17], X[1], SERCOM0/PAD[1], SERCOM2/PAD[1], TCC0/WO[1] and TCC1/WO[3]; supports SERCOM I2C Hs mode. |
| 15 | PA10 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[10], AIN[18], X[2], SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0], TCC0/WO[2] and GCLK_IO[4]. |
| 16 | PA11 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[11], AIN[19], X[3], SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1], TCC0/WO[3] and GCLK_IO[5]. |
| 17 | VDDIO | power_in | Digital supply voltage, 1.62 V to 3.63 V, decoupled with 100 nF and 10 µF capacitors close to the device. |
| 18 | GND | power_in | Digital ground. |
| 19 | PB10 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[10], SERCOM4/PAD[2], TC5/WO[0], TCC0/WO[4], I2S/MCK[1] and GCLK_IO[4]. |
| 20 | PB11 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[11], SERCOM4/PAD[3], TC5/WO[1], TCC0/WO[5], I2S/SCK[1] and GCLK_IO[5]. |
| 21 | PA12 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0], TCC2/WO[0], TCC0/WO[6] and AC/CMP[0]; supports SERCOM I2C Hs mode. |
| 22 | PA13 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1], TCC2/WO[1], TCC0/WO[7] and AC/CMP[1]; supports SERCOM I2C Hs mode. |
| 23 | PA14 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC3/WO[0], TCC0/WO[4] and GCLK_IO[0], and XIN (crystal/external clock input) when XOSC is used. |
| 24 | PA15 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC3/WO[1], TCC0/WO[5] and GCLK_IO[1], and XOUT (crystal output) when XOSC is used. |
| 25 | PA16 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[0], X[4], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6] and GCLK_IO[2]; supports SERCOM I2C Hs mode. |
| 26 | PA17 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[1], X[5], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[7] and GCLK_IO[3]; supports SERCOM I2C Hs mode. |
| 27 | PA18 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[2], X[6], SERCOM1/PAD[2], SERCOM3/PAD[2], TC3/WO[0], TCC0/WO[2] and AC/CMP[0]. |
| 28 | PA19 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[3], X[7], SERCOM1/PAD[3], SERCOM3/PAD[3], TC3/WO[1], TCC0/WO[3] and AC/CMP[1]. |
| 29 | PA20 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[4], X[8], SERCOM5/PAD[2], SERCOM3/PAD[2], TCC0/WO[6], I2S/SCK[0] and GCLK_IO[4]. |
| 30 | PA21 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[5], X[9], SERCOM5/PAD[3], SERCOM3/PAD[3], TCC0/WO[7], I2S/FS[0] and GCLK_IO[5]. |
| 31 | PA22 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[6], X[10], SERCOM3/PAD[0], SERCOM5/PAD[0], TC4/WO[0], TCC0/WO[4] and GCLK_IO[6]; supports SERCOM I2C Hs mode. |
| 32 | PA23 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[7], X[11], SERCOM3/PAD[1], SERCOM5/PAD[1], TC4/WO[1], TCC0/WO[5], USB SOF 1kHz and GCLK_IO[7]; supports SERCOM I2C Hs mode. |
| 33 | PA24 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC5/WO[0], TCC1/WO[2] and USB DM; if the pin is unconnected, a pull-up via input GPIO mode is recommended to avoid up to 1 mA of extra consumption. |
| 34 | PA25 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC5/WO[1], TCC1/WO[3] and USB DP; if the pin is unconnected, a pull-up via input GPIO mode is recommended to avoid up to 1 mA of extra consumption. |
| 35 | GND | power_in | Digital ground. |
| 36 | VDDIO | power_in | Digital supply voltage, 1.62 V to 3.63 V, decoupled with 100 nF and 10 µF capacitors close to the device. |
| 37 | PB22 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[6], SERCOM5/PAD[2], TCC3/WO[0] and GCLK_IO[0]. |
| 38 | PB23 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[7], SERCOM5/PAD[3], TCC3/WO[1] and GCLK_IO[1]. |
| 39 | PA27 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[15], TCC3/WO[6] and GCLK_IO[0]. |
| 40 | RESET | input | External active-low reset input with an internal pull-up; the low-level threshold is below 0.36 × VDDIO at 2.7 V to 3.6 V and below 0.33 × VDDIO at 1.6 V to 2.0 V. |
| 41 | PA28 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[8], TCC3/WO[7] and GCLK_IO[0]. |
| 42 | GND | power_in | Digital ground. |
| 43 | VDDCORE | power_out | Core supply output of the internal voltage regulator, 1.6 V to 1.8 V, with a 1 µF decoupling capacitor close to the pin. |
| 44 | VDDIN | power_in | Input supply to the internal voltage regulator that generates VDDCORE; the device supports a single supply of 1.62 V to 3.63 V. |
| 45 | PA30 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], TCC3/WO[4] and GCLK_IO[0], and SWCLK (Serial Wire Debug clock). |
| 46 | PA31 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1] and TCC3/WO[5], and SWDIO (Serial Wire Debug data, activated only when a debugger is present). |
| 47 | PB02 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[10] and Y[8], plus EXTINT[2], SERCOM5/PAD[0] and TCC3/WO[2]. |
| 48 | PB03 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[11] and Y[9], plus EXTINT[3], SERCOM5/PAD[1] and TCC3/WO[3]. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-48(7x7) |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 48 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage (common supply VDD) | VDD | 1.62 | 3.63 | V | SAM D21 operating voltage (feature list); same voltage on VDDIN, VDDIO and VDDANA | 2 | |
| VDDIO supply voltage | VDDIO | 1.62 | 3.63 | V | Powers I/O lines, OSC8M and XOSC | 36 | |
| VDDIN supply voltage | VDDIN | 1.62 | 3.63 | V | Powers I/O lines and the internal regulator | 36 | |
| VDDANA supply voltage | VDDANA | 1.62 | 3.63 | V | Powers I/O lines, ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K | 36 | |
| Operating temperature range (grade U, -40 to 85 °C) | -40 | 85 | °C | Package grade U ordering code (-40 - 85°C Matte Sn plating) | 17 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In the self-capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor. | 860 |
CAD (KiCad official)
- Symbol:
ATSAMD21G17D-AUT - Footprint:
Package_QFP:TQFP-48_7x7mm_P0.5mm - 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files:
atsamd21g17d-aut-etched.step/atsamd21g17d-aut-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atsamd21g17d-aut.step/atsamd21g17d-aut.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (1115 pp, sha256
f8ee53b6c6fc1efe, retrieved 2026-10-30, tier: manufacturer) - 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).
# ATSAMD21G17D-AUT
**Microchip Tech** · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-48(7x7)
ATSAMD21G17D-AUT from Microchip Tech, in a TQFP-48(7x7). 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 | PA00 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[0], SERCOM1/PAD[0] and TCC2/WO[0], and XIN32 (32 kHz crystal input) when XOSC32K is used. |
| 2 | PA01 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[1], SERCOM1/PAD[1] and TCC2/WO[1], and XOUT32 (32 kHz crystal output) when XOSC32K is used. |
| 3 | PA02 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[0] and Y[0] and DAC output VOUT, which require peripheral function B to disable digital control of the pin, plus EXTINT[2] and TCC3/WO[0]. |
| 4 | PA03 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[1] and Y[1], ADC/DAC external reference VREFA, plus EXTINT[3] and TCC3/WO[1]; analog functions require peripheral function B. |
| 5 | GNDANA | power_in | Ground for the analog power domain (VDDANA). |
| 6 | VDDANA | power_in | Analog supply voltage, 1.62 V to 3.63 V, to be decoupled with 100 nF and 10 µF capacitors close to the device. |
| 7 | PB08 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[8], AIN[2], Y[14], SERCOM4/PAD[0], TC4/WO[0] and TCC3/WO[6]. |
| 8 | PB09 | bidirectional | General-purpose I/O on the VDDANA domain with alternate functions EXTINT[9], AIN[3], Y[15], SERCOM4/PAD[1], TC4/WO[1] and TCC3/WO[7]. |
| 9 | PA04 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[4], AIN[0] and Y[2], ADC external reference VREFB, plus EXTINT[4], SERCOM0/PAD[0], TCC0/WO[0] and TCC3/WO[2]. |
| 10 | PA05 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[5], AIN[1] and Y[3], plus EXTINT[5], SERCOM0/PAD[1], TCC0/WO[1] and TCC3/WO[3]. |
| 11 | PA06 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[6], AIN[2] and Y[4], plus EXTINT[6], SERCOM0/PAD[2], TCC1/WO[0] and TCC3/WO[4]. |
| 12 | PA07 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[7], AIN[3] and Y[5], plus EXTINT[7], SERCOM0/PAD[3], TCC1/WO[1] and TCC3/WO[5]. |
| 13 | PA08 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions NMI, AIN[16], X[0], SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0] and TCC1/WO[2]; supports SERCOM I2C Hs mode. |
| 14 | PA09 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[9], AIN[17], X[1], SERCOM0/PAD[1], SERCOM2/PAD[1], TCC0/WO[1] and TCC1/WO[3]; supports SERCOM I2C Hs mode. |
| 15 | PA10 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[10], AIN[18], X[2], SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0], TCC0/WO[2] and GCLK_IO[4]. |
| 16 | PA11 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[11], AIN[19], X[3], SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1], TCC0/WO[3] and GCLK_IO[5]. |
| 17 | VDDIO | power_in | Digital supply voltage, 1.62 V to 3.63 V, decoupled with 100 nF and 10 µF capacitors close to the device. |
| 18 | GND | power_in | Digital ground. |
| 19 | PB10 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[10], SERCOM4/PAD[2], TC5/WO[0], TCC0/WO[4], I2S/MCK[1] and GCLK_IO[4]. |
| 20 | PB11 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[11], SERCOM4/PAD[3], TC5/WO[1], TCC0/WO[5], I2S/SCK[1] and GCLK_IO[5]. |
| 21 | PA12 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0], TCC2/WO[0], TCC0/WO[6] and AC/CMP[0]; supports SERCOM I2C Hs mode. |
| 22 | PA13 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1], TCC2/WO[1], TCC0/WO[7] and AC/CMP[1]; supports SERCOM I2C Hs mode. |
| 23 | PA14 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC3/WO[0], TCC0/WO[4] and GCLK_IO[0], and XIN (crystal/external clock input) when XOSC is used. |
| 24 | PA15 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC3/WO[1], TCC0/WO[5] and GCLK_IO[1], and XOUT (crystal output) when XOSC is used. |
| 25 | PA16 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[0], X[4], SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6] and GCLK_IO[2]; supports SERCOM I2C Hs mode. |
| 26 | PA17 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[1], X[5], SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[7] and GCLK_IO[3]; supports SERCOM I2C Hs mode. |
| 27 | PA18 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[2], X[6], SERCOM1/PAD[2], SERCOM3/PAD[2], TC3/WO[0], TCC0/WO[2] and AC/CMP[0]. |
| 28 | PA19 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[3], X[7], SERCOM1/PAD[3], SERCOM3/PAD[3], TC3/WO[1], TCC0/WO[3] and AC/CMP[1]. |
| 29 | PA20 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[4], X[8], SERCOM5/PAD[2], SERCOM3/PAD[2], TCC0/WO[6], I2S/SCK[0] and GCLK_IO[4]. |
| 30 | PA21 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[5], X[9], SERCOM5/PAD[3], SERCOM3/PAD[3], TCC0/WO[7], I2S/FS[0] and GCLK_IO[5]. |
| 31 | PA22 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[6], X[10], SERCOM3/PAD[0], SERCOM5/PAD[0], TC4/WO[0], TCC0/WO[4] and GCLK_IO[6]; supports SERCOM I2C Hs mode. |
| 32 | PA23 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[7], X[11], SERCOM3/PAD[1], SERCOM5/PAD[1], TC4/WO[1], TCC0/WO[5], USB SOF 1kHz and GCLK_IO[7]; supports SERCOM I2C Hs mode. |
| 33 | PA24 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC5/WO[0], TCC1/WO[2] and USB DM; if the pin is unconnected, a pull-up via input GPIO mode is recommended to avoid up to 1 mA of extra consumption. |
| 34 | PA25 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC5/WO[1], TCC1/WO[3] and USB DP; if the pin is unconnected, a pull-up via input GPIO mode is recommended to avoid up to 1 mA of extra consumption. |
| 35 | GND | power_in | Digital ground. |
| 36 | VDDIO | power_in | Digital supply voltage, 1.62 V to 3.63 V, decoupled with 100 nF and 10 µF capacitors close to the device. |
| 37 | PB22 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[6], SERCOM5/PAD[2], TCC3/WO[0] and GCLK_IO[0]. |
| 38 | PB23 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[7], SERCOM5/PAD[3], TCC3/WO[1] and GCLK_IO[1]. |
| 39 | PA27 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[15], TCC3/WO[6] and GCLK_IO[0]. |
| 40 | RESET | input | External active-low reset input with an internal pull-up; the low-level threshold is below 0.36 × VDDIO at 2.7 V to 3.6 V and below 0.33 × VDDIO at 1.6 V to 2.0 V. |
| 41 | PA28 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[8], TCC3/WO[7] and GCLK_IO[0]. |
| 42 | GND | power_in | Digital ground. |
| 43 | VDDCORE | power_out | Core supply output of the internal voltage regulator, 1.6 V to 1.8 V, with a 1 µF decoupling capacitor close to the pin. |
| 44 | VDDIN | power_in | Input supply to the internal voltage regulator that generates VDDCORE; the device supports a single supply of 1.62 V to 3.63 V. |
| 45 | PA30 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], TCC3/WO[4] and GCLK_IO[0], and SWCLK (Serial Wire Debug clock). |
| 46 | PA31 | bidirectional | General-purpose I/O on the VDDIO domain with alternate functions EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1] and TCC3/WO[5], and SWDIO (Serial Wire Debug data, activated only when a debugger is present). |
| 47 | PB02 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[10] and Y[8], plus EXTINT[2], SERCOM5/PAD[0] and TCC3/WO[2]. |
| 48 | PB03 | bidirectional | General-purpose I/O on the VDDANA domain with analog functions AIN[11] and Y[9], plus EXTINT[3], SERCOM5/PAD[1] and TCC3/WO[3]. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-48(7x7) |
| Category | Single Chip Microcomputer/Microcontroller |
| Pins | 48 |
## Electrical characteristics
Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating voltage (common supply VDD) | VDD | 1.62 | | 3.63 | V | SAM D21 operating voltage (feature list); same voltage on VDDIN, VDDIO and VDDANA | 2 |
| VDDIO supply voltage | VDDIO | 1.62 | | 3.63 | V | Powers I/O lines, OSC8M and XOSC | 36 |
| VDDIN supply voltage | VDDIN | 1.62 | | 3.63 | V | Powers I/O lines and the internal regulator | 36 |
| VDDANA supply voltage | VDDANA | 1.62 | | 3.63 | V | Powers I/O lines, ADC, AC, DAC, PTC, OSCULP32K, OSC32K, XOSC32K | 36 |
| Operating temperature range (grade U, -40 to 85 °C) | | -40 | | 85 | °C | Package grade U ordering code (-40 - 85°C Matte Sn plating) | 17 |
## Materials and finish
As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | | tin | including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In the self-capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor. | 860 |
## CAD (KiCad official)
- Symbol: `ATSAMD21G17D-AUT`
- Footprint: `Package_QFP:TQFP-48_7x7mm_P0.5mm`
- 3D model: TQFP-48(7x7) (KiCad packages3D, STEP)
- 3D model files: `atsamd21g17d-aut-etched.step` / `atsamd21g17d-aut-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `atsamd21g17d-aut.step` / `atsamd21g17d-aut.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/atsamd21g17d-aut-datasheet.pdf) (1115 pp, sha256 `f8ee53b6c6fc1efe`, retrieved 2026-10-30, tier: manufacturer)
- **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](docs/atsamd21g17d-aut-datasheet.pdf)