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ATSAMD21E17A-AUT
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Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ATSAMD21E17A-AUT
Microchip Tech · Pre-ordered MCUs · TQFP-32(7x7)
ATSAMD21E17A-AUT from Microchip Tech, in a TQFP-32(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 | Port A general-purpose I/O on VDDANA; also XIN32 (32 kHz crystal input) and EXTINT[0], AIN[0] and SERCOM1 PAD[0] functions. |
| 2 | PA01 | bidirectional | Port A general-purpose I/O on VDDANA; also XOUT32 (32 kHz crystal output) and EXTINT[1], AIN[1] and SERCOM1 PAD[1] functions. |
| 3 | PA02 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[0] and VOUT DAC output (peripheral function B), with EXTINT[2]. |
| 4 | PA03 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[1] and ADC/DAC VREFA reference (function B), with EXTINT[3]. |
| 5 | PA04 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[4]/AIN[0] (function B), ADC VREFB reference, EXTINT[4] and SERCOM0 PAD[0]. |
| 6 | PA05 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[5]/AIN[1] (function B), with EXTINT[5] and SERCOM0 PAD[1]. |
| 7 | PA06 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[6]/AIN[2] (function B), with EXTINT[6] and SERCOM0 PAD[2]. |
| 8 | PA07 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[7]/AIN[3] (function B), with EXTINT[7] and SERCOM0 PAD[3]. |
| 9 | VDDANA | power_in | Analog supply for the ADC, DAC, analog comparators and analog port pins; SAM D21 operating voltage is 1.62V - 3.63V. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | PA08 | bidirectional | Port A general-purpose I/O on VDDIO; NMI input (function A), analog input AIN[16]/X[0], SERCOM0/SERCOM2 PAD[0] and TCC0 WO[0]. |
| 12 | PA09 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[9], analog input AIN[17]/X[1], SERCOM0/SERCOM2 PAD[1] and TCC0 WO[1]. |
| 13 | PA10 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[10], analog input AIN[18]/X[2], SERCOM0/SERCOM2 PAD[2] and TCC1 WO[0]. |
| 14 | PA11 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[11], analog input AIN[19]/X[3], SERCOM0/SERCOM2 PAD[3] and TCC1 WO[1]. |
| 15 | PA14 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[14], SERCOM2/SERCOM4 PAD[2], TC3 WO[0], and XIN oscillator input (Table 7-3). |
| 16 | PA15 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[15], SERCOM2/SERCOM4 PAD[3], TC3 WO[1], and XOUT oscillator output (Table 7-3). |
| 17 | PA16 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[0], X[4], SERCOM1/SERCOM3 PAD[0] and TCC2 WO[0]. |
| 18 | PA17 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[1], X[5], SERCOM1/SERCOM3 PAD[1] and TCC2 WO[1]. |
| 19 | PA18 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[2], X[6], SERCOM1/SERCOM3 PAD[2], TC3 WO[0] and AC CMP[0]. |
| 20 | PA19 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[3], X[7], SERCOM1/SERCOM3 PAD[3], TC3 WO[1] and AC CMP[1]. |
| 21 | PA22 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[6], X[10], SERCOM3/SERCOM5 PAD[0], TC4 WO[0] and GCLK_IO[6]. |
| 22 | PA23 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[7], X[11], SERCOM3/SERCOM5 PAD[1], TC4 WO[1] and USB SOF 1kHz output. |
| 23 | PA24 | bidirectional | Port A general-purpose I/O on VDDIO; USB DM data line, EXTINT[12], SERCOM3/SERCOM5 PAD[2] and TC5 WO[0]. If unconnected, a pull-up is recommended to avoid extra consumption (<1mA). |
| 24 | PA25 | bidirectional | Port A general-purpose I/O on VDDIO; USB DP data line, EXTINT[13], SERCOM3/SERCOM5 PAD[3] and TC5 WO[1]. If unconnected, a pull-up is recommended to avoid extra consumption (<1mA). |
| 25 | PA27 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[15], TCC3 WO[6] and GCLK_IO[0]. |
| 26 | RESET | input | External active-low reset input to the device. |
| 27 | PA28 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[8], TCC3 WO[7] and GCLK_IO[0]. |
| 28 | GND | power_in | Ground reference for the device. |
| 29 | VDDCORE | power_out | Regulated output supply from the internal voltage regulator to the core; requires external decoupling as described in the schematic checklist. |
| 30 | VDDIN | power_in | Input supply to the internal voltage regulator and I/O reference; SAM D21 operating voltage is 1.62V - 3.63V. |
| 31 | PA30 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[10], SERCOM1 PAD[2], TCC1 WO[0], TCC3 WO[4] and SWCLK debug clock. |
| 32 | PA31 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[11], SERCOM1 PAD[3], TCC1 WO[1], TCC3 WO[5] and SWDIO debug data (active with debugger present). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 32 |
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 (SAM D21 supply range) | 1.62 | 3.63 | V | 2 |
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. | 859 |
CAD (KiCad official)
- Symbol:
ATSAMD21E17A-AUT - Footprint:
Package_QFP:TQFP-32_7x7mm_P0.8mm - 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files:
atsamd21e17a-aut-etched.step/atsamd21e17a-aut-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atsamd21e17a-aut.step/atsamd21e17a-aut.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (1148 pp, sha256
18ca1ccab5aa330f, retrieved 2026-10-28, 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).
# ATSAMD21E17A-AUT
**Microchip Tech** · Pre-ordered MCUs · TQFP-32(7x7)
ATSAMD21E17A-AUT from Microchip Tech, in a TQFP-32(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 | Port A general-purpose I/O on VDDANA; also XIN32 (32 kHz crystal input) and EXTINT[0], AIN[0] and SERCOM1 PAD[0] functions. |
| 2 | PA01 | bidirectional | Port A general-purpose I/O on VDDANA; also XOUT32 (32 kHz crystal output) and EXTINT[1], AIN[1] and SERCOM1 PAD[1] functions. |
| 3 | PA02 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[0] and VOUT DAC output (peripheral function B), with EXTINT[2]. |
| 4 | PA03 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[1] and ADC/DAC VREFA reference (function B), with EXTINT[3]. |
| 5 | PA04 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[4]/AIN[0] (function B), ADC VREFB reference, EXTINT[4] and SERCOM0 PAD[0]. |
| 6 | PA05 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[5]/AIN[1] (function B), with EXTINT[5] and SERCOM0 PAD[1]. |
| 7 | PA06 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[6]/AIN[2] (function B), with EXTINT[6] and SERCOM0 PAD[2]. |
| 8 | PA07 | bidirectional | Port A general-purpose I/O on VDDANA; analog input AIN[7]/AIN[3] (function B), with EXTINT[7] and SERCOM0 PAD[3]. |
| 9 | VDDANA | power_in | Analog supply for the ADC, DAC, analog comparators and analog port pins; SAM D21 operating voltage is 1.62V - 3.63V. |
| 10 | GND | power_in | Ground reference for the device. |
| 11 | PA08 | bidirectional | Port A general-purpose I/O on VDDIO; NMI input (function A), analog input AIN[16]/X[0], SERCOM0/SERCOM2 PAD[0] and TCC0 WO[0]. |
| 12 | PA09 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[9], analog input AIN[17]/X[1], SERCOM0/SERCOM2 PAD[1] and TCC0 WO[1]. |
| 13 | PA10 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[10], analog input AIN[18]/X[2], SERCOM0/SERCOM2 PAD[2] and TCC1 WO[0]. |
| 14 | PA11 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[11], analog input AIN[19]/X[3], SERCOM0/SERCOM2 PAD[3] and TCC1 WO[1]. |
| 15 | PA14 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[14], SERCOM2/SERCOM4 PAD[2], TC3 WO[0], and XIN oscillator input (Table 7-3). |
| 16 | PA15 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[15], SERCOM2/SERCOM4 PAD[3], TC3 WO[1], and XOUT oscillator output (Table 7-3). |
| 17 | PA16 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[0], X[4], SERCOM1/SERCOM3 PAD[0] and TCC2 WO[0]. |
| 18 | PA17 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[1], X[5], SERCOM1/SERCOM3 PAD[1] and TCC2 WO[1]. |
| 19 | PA18 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[2], X[6], SERCOM1/SERCOM3 PAD[2], TC3 WO[0] and AC CMP[0]. |
| 20 | PA19 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[3], X[7], SERCOM1/SERCOM3 PAD[3], TC3 WO[1] and AC CMP[1]. |
| 21 | PA22 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[6], X[10], SERCOM3/SERCOM5 PAD[0], TC4 WO[0] and GCLK_IO[6]. |
| 22 | PA23 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[7], X[11], SERCOM3/SERCOM5 PAD[1], TC4 WO[1] and USB SOF 1kHz output. |
| 23 | PA24 | bidirectional | Port A general-purpose I/O on VDDIO; USB DM data line, EXTINT[12], SERCOM3/SERCOM5 PAD[2] and TC5 WO[0]. If unconnected, a pull-up is recommended to avoid extra consumption (<1mA). |
| 24 | PA25 | bidirectional | Port A general-purpose I/O on VDDIO; USB DP data line, EXTINT[13], SERCOM3/SERCOM5 PAD[3] and TC5 WO[1]. If unconnected, a pull-up is recommended to avoid extra consumption (<1mA). |
| 25 | PA27 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[15], TCC3 WO[6] and GCLK_IO[0]. |
| 26 | RESET | input | External active-low reset input to the device. |
| 27 | PA28 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[8], TCC3 WO[7] and GCLK_IO[0]. |
| 28 | GND | power_in | Ground reference for the device. |
| 29 | VDDCORE | power_out | Regulated output supply from the internal voltage regulator to the core; requires external decoupling as described in the schematic checklist. |
| 30 | VDDIN | power_in | Input supply to the internal voltage regulator and I/O reference; SAM D21 operating voltage is 1.62V - 3.63V. |
| 31 | PA30 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[10], SERCOM1 PAD[2], TCC1 WO[0], TCC3 WO[4] and SWCLK debug clock. |
| 32 | PA31 | bidirectional | Port A general-purpose I/O on VDDIO; EXTINT[11], SERCOM1 PAD[3], TCC1 WO[1], TCC3 WO[5] and SWDIO debug data (active with debugger present). |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-32(7x7) |
| Category | Embedded Processors & Controllers |
| Pins | 32 |
## 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 (SAM D21 supply range) | | 1.62 | | 3.63 | V | | 2 |
## 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. | 859 |
## CAD (KiCad official)
- Symbol: `ATSAMD21E17A-AUT`
- Footprint: `Package_QFP:TQFP-32_7x7mm_P0.8mm`
- 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
- 3D model files: `atsamd21e17a-aut-etched.step` / `atsamd21e17a-aut-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `atsamd21e17a-aut.step` / `atsamd21e17a-aut.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/atsamd21e17a-aut-datasheet.pdf) (1148 pp, sha256 `18ca1ccab5aa330f`, retrieved 2026-10-28, 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/atsamd21e17a-aut-datasheet.pdf)