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ATSAMC21J17A-AUT

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Microchip Tech MICROCHIP, TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATSAMC21J17A-AUT

Microchip Tech · MICROCHIP · TQFP-64(10x10)

ATSAMC21J17A-AUT from Microchip Tech, in a TQFP-64(10x10). 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 VDDANA supply with EXTINT[0], SERCOM1/PAD[0], TCC2/WO[0] and XIN32 (32 kHz crystal input) functions.
2 PA01 bidirectional General-purpose I/O on VDDANA supply with EXTINT[1], SERCOM1/PAD[1], TCC2/WO[1] and XOUT32 (32 kHz crystal output) functions.
3 PA02 bidirectional General-purpose I/O on VDDANA supply with EXTINT[2], analog inputs AIN[0]/AIN[4], PTC Y[0] and DAC VOUT.
4 PA03 bidirectional General-purpose I/O on VDDANA supply with EXTINT[3], ADC/VREFA external reference, analog inputs AIN[1]/AIN[5] and PTC Y[1].
5 PB04 bidirectional General-purpose I/O on VDDANA supply with EXTINT[4], analog input AIN[6] and PTC Y[10].
6 PB05 bidirectional General-purpose I/O on VDDANA supply with EXTINT[5], analog inputs AIN[7]/AIN[6] and PTC Y[11].
7 GNDANA power_in Ground for the analog power domain.
8 VDDANA power_in Analog supply voltage, 2.7V to 5.5V, with 100nF and 10µF decoupling and a ferrite bead recommended.
9 PB06 bidirectional General-purpose I/O on VDDANA supply with EXTINT[6], analog inputs AIN[8]/AIN[7], PTC Y[12], SDADC INN[2] and CCL2/IN[6].
10 PB07 bidirectional General-purpose I/O on VDDANA supply with EXTINT[7], analog input AIN[9], PTC Y[13], SDADC INP[2] and CCL2/IN[7].
11 PB08 bidirectional General-purpose I/O on VDDANA supply with EXTINT[8], analog inputs AIN[2]/AIN[4], PTC Y[14], SDADC INN[1], SERCOM4/PAD[0], TC0/WO[0] and CCL2/IN[8].
12 PB09 bidirectional General-purpose I/O on VDDANA supply with EXTINT[9], analog inputs AIN[3]/AIN[5], PTC Y[15], SDADC INP[1], SERCOM4/PAD[1], TC0/WO[1] and CCL2/OUT[2].
13 PA04 bidirectional General-purpose I/O on VDDANA supply with EXTINT[4], SDADC/VREFB reference, analog inputs AIN[4]/AIN[0], PTC Y[2], SERCOM0/PAD[0], TCC0/WO[0] and CCL0/IN[0].
14 PA05 bidirectional General-purpose I/O on VDDANA supply with EXTINT[5], analog inputs AIN[5]/AIN[1], PTC Y[3], SERCOM0/PAD[1], TCC0/WO[1] and CCL0/IN[1].
15 PA06 bidirectional General-purpose I/O on VDDANA supply with EXTINT[6], analog inputs AIN[6]/AIN[2], PTC Y[4], SDADC INN[0], SERCOM0/PAD[2], TCC1/WO[0] and CCL0/IN[2].
16 PA07 bidirectional General-purpose I/O on VDDANA supply with EXTINT[7], analog inputs AIN[7]/AIN[3], PTC Y[5], SDADC INP[0], SERCOM0/PAD[3], TCC1/WO[1] and CCL0/OUT[0].
17 PA08 bidirectional General-purpose I/O on VDDIO supply with NMI, analog inputs AIN[8]/AIN[10], PTC X[0]/Y[16], SERCOM0/PAD[0], SERCOM2/PAD[0] (I2C capable), TCC0/WO[0] and CCL1/IN[3].
18 PA09 bidirectional General-purpose I/O on VDDIO supply with EXTINT[9], analog inputs AIN[9]/AIN[11], PTC X[1]/Y[17], SERCOM0/PAD[1], SERCOM2/PAD[1] (I2C capable), TCC0/WO[1] and CCL1/IN[4].
19 PA10 bidirectional High-sink general-purpose I/O on VDDIO supply with EXTINT[10], AIN[10], PTC X[2]/Y[18], SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0], GCLK_IO[4] and CCL1/IN[5].
20 PA11 bidirectional High-sink general-purpose I/O on VDDIO supply with EXTINT[11], AIN[11], PTC X[3]/Y[19], SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1], GCLK_IO[5] and CCL1/OUT[1].
21 VDDIO power_in I/O supply voltage, 2.7V to 5.5V, with 100nF and 10µF decoupling.
22 GND power_in Ground.
23 PB10 bidirectional High-sink general-purpose I/O on VDDIO supply with EXTINT[10], SERCOM4/PAD[2], TC1/WO[0], TCC0/WO[4], CAN1/TX, GCLK_IO[4] and CCL1/IN[5].
24 PB11 bidirectional High-sink general-purpose I/O on VDDIO supply with EXTINT[11], SERCOM4/PAD[3], TC1/WO[1], TCC0/WO[5], CAN1/RX, GCLK_IO[5] and CCL1/OUT[1].
25 PB12 bidirectional General-purpose I/O on VDDIO supply with EXTINT[12], PTC X[12]/Y[28], SERCOM4/PAD[0] (I2C capable), TC0/WO[0], TCC0/WO[6] and GCLK_IO[6].
26 PB13 bidirectional General-purpose I/O on VDDIO supply with EXTINT[13], PTC X[13]/Y[29], SERCOM4/PAD[1] (I2C capable), TC0/WO[1], TCC0/WO[7] and GCLK_IO[7].
27 PB14 bidirectional General-purpose I/O on VDDIO supply with EXTINT[14], PTC X[14]/Y[30], SERCOM4/PAD[2], TC1/WO[0], CAN1/TX, GCLK_IO[0] and CCL3/IN[9].
28 PB15 bidirectional General-purpose I/O on VDDIO supply with EXTINT[15], PTC X[15]/Y[31], SERCOM4/PAD[3], TC1/WO[1], CAN1/RX, GCLK_IO[1] and CCL3/IN[10].
29 PA12 bidirectional General-purpose I/O on VDDIO supply with EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0] (I2C capable), TCC2/WO[0], TCC0/WO[6] and AC/CMP[0].
30 PA13 bidirectional General-purpose I/O on VDDIO supply with EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1] (I2C capable), TCC2/WO[1], TCC0/WO[7] and AC/CMP[1].
31 PA14 bidirectional General-purpose I/O on VDDIO supply with EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC4/WO[0], TCC0/WO[4], GCLK_IO[0] and XOSC crystal input XIN.
32 PA15 bidirectional General-purpose I/O on VDDIO supply with EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC4/WO[1], TCC0/WO[5], GCLK_IO[1] and XOSC crystal output XOUT.
33 GND power_in Ground.
34 VDDIO power_in I/O supply voltage, 2.7V to 5.5V, with 100nF and 10µF decoupling.
35 PA16 bidirectional General-purpose I/O on VDDIO supply with EXTINT[0], PTC X[4]/Y[20], SERCOM1/PAD[0], SERCOM3/PAD[0] (I2C capable), TCC2/WO[0], TCC0/WO[6], GCLK_IO[2] and CCL0/IN[0].
36 PA17 bidirectional General-purpose I/O on VDDIO supply with EXTINT[1], PTC X[5]/Y[21], SERCOM1/PAD[1], SERCOM3/PAD[1] (I2C capable), TCC2/WO[1], TCC0/WO[7], GCLK_IO[3] and CCL0/IN[1].
37 PA18 bidirectional General-purpose I/O on VDDIO supply with EXTINT[2], PTC X[6]/Y[22], SERCOM1/PAD[2], SERCOM3/PAD[2], TC4/WO[0], TCC0/WO[2], AC/CMP[0] and CCL0/IN[2].
38 PA19 bidirectional General-purpose I/O on VDDIO supply with EXTINT[3], PTC X[7]/Y[23], SERCOM1/PAD[3], SERCOM3/PAD[3], TC4/WO[1], TCC0/WO[3], AC/CMP[1] and CCL0/OUT[0].
39 PB16 bidirectional General-purpose I/O on VDDIO supply with EXTINT[0], SERCOM5/PAD[0] (I2C capable), TC2/WO[0], TCC0/WO[4], GCLK_IO[2] and CCL3/IN[11].
40 PB17 bidirectional General-purpose I/O on VDDIO supply with EXTINT[1], SERCOM5/PAD[1] (I2C capable), TC2/WO[1], TCC0/WO[5], GCLK_IO[3] and CCL3/OUT[3].
41 PA20 bidirectional General-purpose I/O on VDDIO supply with EXTINT[4], PTC X[8]/Y[24], SERCOM5/PAD[2], SERCOM3/PAD[2], TC3/WO[0], TCC0/WO[6] and GCLK_IO[4].
42 PA21 bidirectional General-purpose I/O on VDDIO supply with EXTINT[5], PTC X[9]/Y[25], SERCOM5/PAD[3], SERCOM3/PAD[3], TC3/WO[1], TCC0/WO[7] and GCLK_IO[5].
43 PA22 bidirectional General-purpose I/O on VDDIO supply with EXTINT[6], PTC X[10]/Y[26], SERCOM3/PAD[0] (I2C capable), SERCOM5/PAD[0], TC0/WO[0], TCC0/WO[4], GCLK_IO[6] and CCL2/IN[6].
44 PA23 bidirectional General-purpose I/O on VDDIO supply with EXTINT[7], PTC X[11]/Y[27], SERCOM3/PAD[1] (I2C capable), SERCOM5/PAD[1], TC0/WO[1], TCC0/WO[5], GCLK_IO[7] and CCL2/IN[7].
45 PA24 bidirectional General-purpose I/O on VDDIO supply with EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC1/WO[0], TCC1/WO[2], CAN0/TX, AC/CMP[2] and CCL2/IN[8].
46 PA25 bidirectional General-purpose I/O on VDDIO supply with EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC1/WO[1], TCC1/WO[3], CAN0/RX, AC/CMP[3] and CCL2/OUT[2].
47 GND power_in Ground.
48 VDDIO power_in I/O supply voltage, 2.7V to 5.5V, with 100nF and 10µF decoupling.
49 PB22 bidirectional General-purpose I/O with EXTINT[6], SERCOM5/PAD[2], TC3/WO[0], CAN0/TX, GCLK_IO[0] and CCL0/IN[0].
50 PB23 bidirectional General-purpose I/O with EXTINT[7], SERCOM5/PAD[3], TC3/WO[1], CAN0/RX, GCLK_IO[1] and CCL0/OUT[0].
51 PA27 bidirectional General-purpose I/O on VDDIN supply with EXTINT[15] and GCLK_IO[0].
52 RESETN input Active-low external reset input.
53 PA28 bidirectional General-purpose I/O on VDDIN supply with EXTINT[8] and GCLK_IO[0].
54 GND power_in Ground.
55 VDDCORE power_out Regulated core supply output, 1.1V to 1.3V typical, with 100nF and 1µF external decoupling.
56 VDDIN power_in Digital supply input, 2.7V to 5.5V, with 100nF and 10µF decoupling.
57 PA30 bidirectional General-purpose I/O on VDDIN supply with EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], GCLK_IO[0], CCL1/IN[3] and SWCLK for Serial Wire Debug.
58 PA31 bidirectional General-purpose I/O on VDDIN supply with EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1], CCL1/OUT[1] and SWDIO for Serial Wire Debug.
59 PB30 bidirectional General-purpose I/O on VDDIN supply with EXTINT[14], SERCOM5/PAD[0] (I2C capable), TCC0/WO[0], TCC1/WO[2] and AC/CMP[2].
60 PB31 bidirectional General-purpose I/O on VDDIN supply with EXTINT[15], SERCOM5/PAD[1] (I2C capable), TCC0/WO[1], TCC1/WO[3] and AC/CMP[3].
61 PB00 bidirectional General-purpose I/O on VDDANA supply with EXTINT[0], analog input AIN[0], PTC Y[6], SERCOM5/PAD[2], TC3/WO[0] and CCL0/IN[1].
62 PB01 bidirectional General-purpose I/O on VDDANA supply with EXTINT[1], analog input AIN[1], PTC Y[7], SERCOM5/PAD[3], TC3/WO[1] and CCL0/IN[2].
63 PB02 bidirectional General-purpose I/O on VDDANA supply with EXTINT[2], analog input AIN[2], PTC Y[8], SERCOM5/PAD[0], TC2/WO[0] and CCL0/OUT[0].
64 PB03 bidirectional General-purpose I/O on VDDANA supply with EXTINT[3], analog input AIN[3], PTC Y[9], SERCOM5/PAD[1] and TC2/WO[1].

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-64(10x10)
Category Embedded Processors & Controllers
Pins 64

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage range (VDDIN/VDDANA) VDD 2.7 5.5 V Single supply 2.70V to 5.50V; same voltage on VDDIN and VDDANA 40
I/O supply voltage range VDDIO 2.7 5.5 V Dual supply mode; VDDIO must be less than or equal to VDDIN 41
Operating temperature (grade U) -40 85 °C U = -40 - 85°C Matte Sn Plating 19
Maximum CPU frequency fCPU 48 MHz DC to 48 MHz 1
VDDCORE regulated output voltage VDDCORE 1.2 V Internal regulated voltage output 40

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 configurations, including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. 1108

CAD (KiCad official)

  • Symbol: ATSAMC21J17A-AUT
  • Footprint: Package_QFP:TQFP-64_10x10mm_P0.5mm
  • 3D model: TQFP-64(10x10) (KiCad packages3D, STEP)
  • 3D model files: atsamc21j17a-aut-etched.step / atsamc21j17a-aut-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamc21j17a-aut.step / atsamc21j17a-aut.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (1293 pp, sha256 e32092b2081c14de, retrieved 2026-10-23, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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