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ATSAMC21G17A-MUT

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), QFN-48-EP(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATSAMC21G17A-MUT

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-48-EP(7x7)

ATSAMC21G17A-MUT from Microchip Tech, in a QFN-48-EP(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; alternate functions include EXTINT[0], SERCOM1/PAD[0], TCC2/WO[0], CMP[2], and XIN32 (32.768 kHz crystal input).
2 PA01 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[1], SERCOM1/PAD[1], TCC2/WO[1], CMP[3], and XOUT32 (32.768 kHz crystal output).
3 PA02 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[2], AIN[0], AIN[4], Y[0] (PTC) and VOUT (DAC output).
4 PA03 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[3], ADC-DAC/VREFA (external reference), AIN[1], AIN[5] and Y[1] (PTC).
5 GNDANA power_in Ground for the analog domain (VDDANA).
6 VDDANA power_in Analog supply pin for the analog peripherals and the VDDANA I/O domain.
7 PB08 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[8], AIN[2], Y[14] (PTC), SERCOM4/PAD[0], TC0/WO[0] and CCL2/IN[8].
8 PB09 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[9], AIN[3], AIN[5], Y[15] (PTC), SERCOM4/PAD[1], TC0/WO[1] and CCL2/OUT[2].
9 PA04 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[4], SDADC/VREFB, AIN[4], AIN[0], Y[2] (PTC), SERCOM0/PAD[0], TCC0/WO[0] and CCL0/IN[0].
10 PA05 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[5], AIN[5], AIN[1], Y[3] (PTC), SERCOM0/PAD[1], TCC0/WO[1] and CCL0/IN[1].
11 PA06 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[6], AIN[6], AIN[2], Y[4] (PTC), AINN[0], SERCOM0/PAD[2], TCC1/WO[0] and CCL0/IN[2].
12 PA07 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[7], AIN[7], AIN[3], Y[5] (PTC), AINP[0], SERCOM0/PAD[3], TCC1/WO[1] and CCL0/OUT[0].
13 PA08 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include NMI, AIN[8], AIN[10], X[0]/Y[16] (PTC), SERCOM0/PAD[0], SERCOM2/PAD[0], TCC0/WO[0], TCC1/WO[2] and CCL1/IN[3].
14 PA09 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[9], AIN[9], AIN[11], X[1]/Y[17] (PTC), SERCOM0/PAD[1], SERCOM2/PAD[1], TCC0/WO[1], TCC1/WO[3] and CCL1/IN[4].
15 PA10 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[10], AIN[10], X[2]/Y[18] (PTC), SERCOM0/PAD[2], SERCOM2/PAD[2], TCC1/WO[0], TCC0/WO[2], GCLK_IO[4] and CCL1/IN[5].
16 PA11 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[11], AIN[11], X[3]/Y[19] (PTC), SERCOM0/PAD[3], SERCOM2/PAD[3], TCC1/WO[1], TCC0/WO[3], GCLK_IO[5] and CCL1/OUT[1].
17 VDDIO power_in I/O supply for the VDDIO pin domain (pins PA08-PA25, PB10, PB11 and others in that domain).
18 GND power_in Digital ground for the VDDIO and core domains.
19 PB10 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[10], SERCOM4/PAD[2], TC1/WO[0], TCC0/WO[4], CAN1/TX, GCLK_IO[4] and CCL1/IN[5].
20 PB11 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[11], SERCOM4/PAD[3], TC1/WO[1], TCC0/WO[5], CAN1/RX, GCLK_IO[5] and CCL1/OUT[1].
21 PA12 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[12], SERCOM2/PAD[0], SERCOM4/PAD[0], TCC2/WO[0], TCC0/WO[6] and AC/CMP[0].
22 PA13 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[13], SERCOM2/PAD[1], SERCOM4/PAD[1], TCC2/WO[1], TCC0/WO[7] and AC/CMP[1].
23 PA14 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[14], SERCOM2/PAD[2], SERCOM4/PAD[2], TC4/WO[0], TCC0/WO[4], GCLK_IO[0] and XIN (XOSC crystal/clock input).
24 PA15 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[15], SERCOM2/PAD[3], SERCOM4/PAD[3], TC4/WO[1], TCC0/WO[5], GCLK_IO[1] and XOUT (XOSC crystal output).
25 PA16 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[0], X[4]/Y[20] (PTC), SERCOM1/PAD[0], SERCOM3/PAD[0], TCC2/WO[0], TCC0/WO[6], GCLK_IO[2] and CCL0/IN[0].
26 PA17 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[1], X[5]/Y[21] (PTC), SERCOM1/PAD[1], SERCOM3/PAD[1], TCC2/WO[1], TCC0/WO[7], GCLK_IO[3] and CCL0/IN[1].
27 PA18 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[2], X[6]/Y[22] (PTC), SERCOM1/PAD[2], SERCOM3/PAD[2], TC4/WO[0], TCC0/WO[2], AC/CMP[0] and CCL0/IN[2].
28 PA19 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[3], X[7]/Y[23] (PTC), SERCOM1/PAD[3], SERCOM3/PAD[3], TC4/WO[1], TCC0/WO[3], AC/CMP[1] and CCL0/OUT[0].
29 PA20 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[4], X[8]/Y[24] (PTC), SERCOM5/PAD[2], SERCOM3/PAD[2], TC3/WO[0], TCC0/WO[6] and GCLK_IO[4].
30 PA21 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[5], X[9]/Y[25] (PTC), SERCOM5/PAD[3], SERCOM3/PAD[3], TC3/WO[1], TCC0/WO[7] and GCLK_IO[5].
31 PA22 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[6], X[10]/Y[26] (PTC), SERCOM3/PAD[0], SERCOM5/PAD[0], TC0/WO[0], TCC0/WO[4], GCLK_IO[6] and CCL2/IN[6].
32 PA23 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[7], X[11]/Y[27] (PTC), SERCOM3/PAD[1], SERCOM5/PAD[1], TC0/WO[1], TCC0/WO[5], GCLK_IO[7] and CCL2/IN[7].
33 PA24 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[12], SERCOM3/PAD[2], SERCOM5/PAD[2], TC1/WO[0], TCC1/WO[2], CAN0/TX, AC/CMP[2] and CCL2/IN[8].
34 PA25 bidirectional General-purpose I/O on the VDDIO domain; alternate functions include EXTINT[13], SERCOM3/PAD[3], SERCOM5/PAD[3], TC1/WO[1], TCC1/WO[3], CAN0/RX, AC/CMP[3] and CCL2/OUT[2].
35 GND power_in Digital ground for the VDDIO and core domains.
36 VDDIO power_in I/O supply for the VDDIO pin domain.
37 PB22 bidirectional General-purpose I/O; alternate functions include EXTINT[6], SERCOM5/PAD[2], TC3/WO[0], CAN0/TX, GCLK_IO[0] and CCL0/IN[0]; supply listed as VDDIN in the pin-multiplexing table.
38 PB23 bidirectional General-purpose I/O; alternate functions include EXTINT[7], SERCOM5/PAD[3], TC3/WO[1], CAN0/RX, GCLK_IO[1] and CCL0/OUT[0]; supply listed as VDDIN in the pin-multiplexing table.
39 PA27 bidirectional General-purpose I/O on the VDDIN domain; alternate functions include EXTINT[15] and GCLK_IO[0].
40 RESET input External active-low reset input pin.
41 PA28 bidirectional General-purpose I/O on the VDDIN domain; alternate functions include EXTINT[8] and GCLK_IO[0].
42 GND power_in Digital ground for the VDDIN and core domains.
43 VDDCORE power_out Regulated output of the internal voltage regulator supplying the core; it is a regulated output, not an input supply.
44 VDDIN power_in Input supply for the internal voltage regulator and the VDDIN I/O domain (PA27, PA28, PA30, PA31).
45 PA30 bidirectional General-purpose I/O on the VDDIN domain; alternate functions include EXTINT[10], SERCOM1/PAD[2], TCC1/WO[0], CORTEX_M0P/SWCLK (Serial Wire Debug clock), GCLK_IO[0] and CCL1/IN[3].
46 PA31 bidirectional General-purpose I/O on the VDDIN domain; alternate functions include EXTINT[11], SERCOM1/PAD[3], TCC1/WO[1], CORTEX_M0P/SWDIO (Serial Wire Debug data) and CCL1/OUT[1].
47 PB02 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[2], AIN[2], Y[8] (PTC), SERCOM5/PAD[0], TC2/WO[0] and CCL0/OUT[0].
48 PB03 bidirectional General-purpose I/O on the VDDANA domain; alternate functions include EXTINT[3], AIN[3], Y[9] (PTC), SERCOM5/PAD[1] and TC2/WO[1].
49 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package QFN-48-EP(7x7)
Category Single Chip Microcomputer/Microcontroller
Pins 49

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 VDDIO VDDIO 2.7 5.5 V 38
Supply voltage VDDIN VDDIN 2.7 5.5 V 38
Supply voltage VDDANA VDDANA 2.7 5.5 V 38
Operating supply voltage (common VDD) VDD 2.7 5.5 V 1
Operating temperature range -40 85 °C DC to 64 MHz 1
Maximum CPU frequency 64 MHz -40°C to +85°C 1
Internal regulated core voltage VDDCORE VDDCORE 1.2 V 38

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
housing PC 10.3. Micro Trace Buffer MTB base address corrected from 0x41006000 to 0x41008000. 22. SUPC, Supply Controller 22.6.3.3. VDD Brown-Out Detector (BODVDD): Removed 1198
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. 987

CAD (KiCad official)

  • Symbol: ATSAMC21G17A-MUT
  • Footprint: Package_DFN_QFN:QFN-48-1EP_7x7mm_P0.5mm_EP5.15x5.15mm
  • 3D model: QFN-48-EP(7x7) (KiCad packages3D, STEP)
  • 3D model files: atsamc21g17a-mut-etched.step / atsamc21g17a-mut-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsamc21g17a-mut.step / atsamc21g17a-mut.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (1206 pp, sha256 5991eaad10c5cd35, 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