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ATSAME51N20A-AFT

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-100(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentsingle chip microcomputer-microcontrolleratsame51n20a-aftfactory-2.0.0extractor-text

Verified ATSAME51N20A-AFT

by Ray · last 31 Oct 2026 · 1 record · files match
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Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 100 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATSAME51N20A-AFT · TQFP-100(14x14) · 100 pins
  • ✓copper: 100 copper pads, none touching another net
  • ✓datasheet: all 100 pin names found in the 1934-page datasheet
  • ✓distributor: lcsc C2053582, digikey ATSAME51N20A-AFTTR-ND, mouser 556-ATSAME51N20A-AFT
  • ✓family: TQFP-100_14x14mm_P0.5mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-qb_xr6zq/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 100 pins = 100 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 100 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atsame51n20a-aft.kicad_sym✓ atsame51n20a-aft.kicad_mod✓ atsame51n20a-aft.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 5d ago
viewers atsame51n20a-aft: viewers · Ray 5d ago
atsame51n20a-aft-etched.glb Publish 0.1.0 · Ray 5d ago
atsame51n20a-aft-etched.step atsame51n20a-aft: factory component page (tier=mfr) · Ray 5d ago
atsame51n20a-aft-hero.glb atsame51n20a-aft: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
atsame51n20a-aft-hero.overlay.json Publish 0.1.0 · Ray 5d ago
atsame51n20a-aft.glb Publish 0.1.0 · Ray 5d ago
atsame51n20a-aft.kicad_mod Publish 0.1.0 · Ray 5d ago
atsame51n20a-aft.kicad_sym Publish 0.1.0 · Ray 5d ago
atsame51n20a-aft.lbr Publish 0.1.0 · Ray 5d ago
atsame51n20a-aft.step Publish 0.1.0 · Ray 5d ago
package.json Publish 0.1.0 · Ray 5d ago
page.json Set visibility: public · Ray 5d ago
README.md Publish 0.1.0 · Ray 5d ago
verification.json Verified: Published by the parts factory: tier mfr, 100 pins · Ray 5d ago

ATSAME51N20A-AFT

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-100(14x14)

ATSAME51N20A-AFT from Microchip Tech, in a TQFP-100(14x14). 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 GPIO PA00 with EXTINT[0], SERCOM1/PAD[0] and TC2/WO[0] functions; also XIN32 of the XOSC32K.
2 PA01 bidirectional GPIO PA01 with EXTINT[1], SERCOM1/PAD[1] and TC2/WO[1] functions; also XOUT32 of the XOSC32K.
3 PC00 bidirectional GPIO PC00 with EXTINT[0] and ADC1/AIN[10]; must be static to guarantee XOSC32K crystal-mode behavior.
4 PC01 bidirectional GPIO PC01 with EXTINT[1] and ADC1/AIN[11].
5 PC02 bidirectional GPIO PC02 with EXTINT[2] and ADC1/AIN[4].
6 PC03 bidirectional GPIO PC03 with EXTINT[3] and ADC1/AIN[5].
7 PA02 bidirectional GPIO PA02 with EXTINT[2], ADC0/AIN[0] and DAC/VOUT[0].
8 PA03 bidirectional GPIO PA03 with EXTINT[3], ANAREF/VREFA, ADC0/AIN[1] and PTC X0/Y0.
9 PB04 bidirectional GPIO PB04 with EXTINT[4], ADC1/AIN[6] and PTC X22/Y22.
10 PB05 bidirectional GPIO PB05 with EXTINT[5], ADC1/AIN[7] and PTC X23/Y23.
11 GNDANA power_in Analog ground.
12 VDDANA power_in Analog supply.
13 PB06 bidirectional GPIO PB06 with EXTINT[6], ADC1/AIN[8], PTC X24/Y24 and CCL/IN[6].
14 PB07 bidirectional GPIO PB07 with EXTINT[7], ADC1/AIN[9], PTC X25/Y25 and CCL/IN[7].
15 PB08 bidirectional GPIO PB08 with EXTINT[8], ADC0/AIN[2], ADC1/AIN[0], PTC X1/Y1, SERCOM4/PAD[0], TC4/WO[0] and CCL/IN[8].
16 PB09 bidirectional GPIO PB09 with EXTINT[9], ADC0/AIN[3], ADC1/AIN[1], PTC X2/Y2, SERCOM4/PAD[1], TC4/WO[1] and CCL/OUT[2].
17 PA04 bidirectional GPIO PA04 with EXTINT[4], ANAREF/VREFB, ADC0/AIN[4], AC/AIN[0], PTC X3/Y3, SERCOM0/PAD[0], TC0/WO[0] and CCL/IN[0].
18 PA05 bidirectional GPIO PA05 with EXTINT[5], ADC0/AIN[5], AC/AIN[1], DAC/VOUT[1], SERCOM0/PAD[1], TC0/WO[1] and CCL/IN[1].
19 PA06 bidirectional GPIO PA06 with EXTINT[6], ANAREF/VREFC, ADC0/AIN[6], AC/AIN[2], PTC X4/Y4, SERCOM0/PAD[2], TC1/WO[0], SDHC0/SDCD and CCL/IN[2].
20 PA07 bidirectional GPIO PA07 with EXTINT[7], ADC0/AIN[7], AC/AIN[3], PTC X5/Y5, SERCOM0/PAD[3], TC1/WO[1], SDHC0/SDWP and CCL/OUT[0].
21 PC05 bidirectional GPIO PC05 with EXTINT[5] and SERCOM6/PAD[1].
22 PC06 bidirectional GPIO PC06 with EXTINT[6], SERCOM6/PAD[2] and SDHC0/SDCD.
23 PC07 bidirectional GPIO PC07 with EXTINT[9], SERCOM6/PAD[3] and SDHC0/SDWP.
24 GND power_in Ground.
25 VDDIOB power_in I/O supply for the PA08/PA09 pin cluster.
26 PA08 bidirectional High-sink GPIO PA08 with EXTINT/NMI, ADC0/AIN[8], ADC1/AIN[2], PTC X6/Y6, SERCOM0/SERCOM2, TC0/WO[0], TCC0/TCC1, QSPI/DATA[0], SDHC0/SDCMD and I2C support.
27 PA09 bidirectional High-sink GPIO PA09 with EXTINT[9], ADC0/AIN[9], ADC1/AIN[3], PTC X7/Y7, SERCOM0/SERCOM2, TC0/WO[1], TCC0/TCC1, QSPI/DATA[1] and I2C support.
28 PA10 bidirectional GPIO PA10 with EXTINT[10], ADC0/AIN[10], PTC X8/Y8, SERCOM0/PAD[2], SERCOM2/PAD[2], QSPI/DATA[2] and GCLK/IO[4].
29 PA11 bidirectional GPIO PA11 with EXTINT[11], ADC0/AIN[11], PTC X9/Y9, SERCOM0/PAD[3], SERCOM2/PAD[3], QSPI/DATA[3] and GCLK/IO[5].
30 VDDIOB power_in I/O supply for the PA08/PA09 pin cluster.
31 GND power_in Ground.
32 PB10 bidirectional GPIO PB10 with EXTINT[10], SERCOM4/PAD[2], TC5/WO[0], TCC0/TCC1, QSPI/SCK and GCLK/IO[4].
33 PB11 bidirectional GPIO PB11 with EXTINT[11], SERCOM4/PAD[3], TC5/WO[1], TCC0/TCC1, QSPI/CS and GCLK/IO[5].
34 PB12 bidirectional GPIO PB12 with EXTINT[12], PTC X26/Y26, SERCOM4/PAD[0], TC4/WO[0], TCC3, CAN1/TX and GCLK/IO[6].
35 PB13 bidirectional GPIO PB13 with EXTINT[13], PTC X27/Y27, SERCOM4/PAD[1], TC4/WO[1], TCC3, CAN1/RX and GCLK/IO[7].
36 PB14 bidirectional GPIO PB14 with EXTINT[14], PTC X28/Y28, SERCOM4/PAD[2], TC5/WO[0], TCC4, CAN1/TX, GMAC/GMDC and GCLK/IO[0].
37 PB15 bidirectional GPIO PB15 with EXTINT[15], PTC X29/Y29, SERCOM4/PAD[3], TC5/WO[1], TCC4, CAN1/RX, GMAC/GMDIO and GCLK/IO[1].
38 GND power_in Ground.
39 VDDIO power_in I/O supply.
40 PC10 bidirectional GPIO PC10 with EXTINT[10], SERCOM6/PAD[2], SERCOM7/PAD[2], TCC0 and TCC1.
41 PC11 bidirectional GPIO PC11 with EXTINT[11], SERCOM6/PAD[3], SERCOM7/PAD[3], TCC0, TCC1 and GMAC/GMDC.
42 PC12 bidirectional General-purpose I/O pin PC12 with peripheral multiplexing.
43 PC13 bidirectional General-purpose I/O pin PC13 with peripheral multiplexing.
44 PC14 bidirectional General-purpose I/O pin PC14 with peripheral multiplexing.
45 PC15 bidirectional General-purpose I/O pin PC15 with peripheral multiplexing.
46 PA12 bidirectional High-sink GPIO PA12 with I2C support and peripheral multiplexing.
47 PA13 bidirectional High-sink GPIO PA13 with I2C support and peripheral multiplexing.
48 PA14 bidirectional GPIO PA14 with peripheral multiplexing; also XIN of XOSC0 and carries SWCLK-unrelated oscillator input.
49 PA15 bidirectional GPIO PA15 with peripheral multiplexing; also XOUT of XOSC0.
50 GND power_in Ground.
51 VDDIO power_in I/O supply.
52 PA16 bidirectional High-sink GPIO PA16 with I2C support and peripheral multiplexing.
53 PA17 bidirectional High-sink GPIO PA17 with I2C support and peripheral multiplexing.
54 PA18 bidirectional General-purpose I/O pin PA18 with peripheral multiplexing.
55 PA19 bidirectional General-purpose I/O pin PA19 with peripheral multiplexing.
56 PC16 bidirectional General-purpose I/O pin PC16 with peripheral multiplexing.
57 PC17 bidirectional General-purpose I/O pin PC17 with peripheral multiplexing.
58 PC18 bidirectional General-purpose I/O pin PC18 with peripheral multiplexing.
59 PC19 bidirectional General-purpose I/O pin PC19 with peripheral multiplexing.
60 PC20 bidirectional General-purpose I/O pin PC20 with peripheral multiplexing.
61 PC21 bidirectional General-purpose I/O pin PC21 with peripheral multiplexing.
62 GND power_in Ground.
63 VDDIO power_in I/O supply.
64 PB16 bidirectional General-purpose I/O pin PB16 with peripheral multiplexing.
65 PB17 bidirectional General-purpose I/O pin PB17 with peripheral multiplexing.
66 PB18 bidirectional General-purpose I/O pin PB18 with peripheral multiplexing.
67 PB19 bidirectional General-purpose I/O pin PB19 with peripheral multiplexing.
68 PB20 bidirectional GPIO PB20 with EXTINT[4], SERCOM3/PAD[0], SERCOM7/PAD[1], TCC1/WO[2], PDEC/PDEC[2], SDHC1/SDDAT[2] and GCLK/IO[6].
69 PB21 bidirectional GPIO PB21 with EXTINT[5], SERCOM3/PAD[1], SERCOM7/PAD[0], TCC1/WO[3], SDHC1/SDDAT[3] and GCLK/IO[7].
70 PA20 bidirectional GPIO PA20 with EXTINT[4], PTC X14/Y14, SERCOM5/PAD[2], SERCOM3/PAD[2], TC7/WO[0], TCC1, TCC0, SDHC1/SDCMD, I2S/FS[0], PCC/DATA[4] and GMAC/GMDC.
71 PA21 bidirectional GPIO PA21 with EXTINT[5], PTC X15/Y15, SERCOM5/PAD[3], SERCOM3/PAD[3], TC7/WO[1], SDHC1/SDCK, I2S/SDO, PCC/DATA[5] and GMAC/GMDIO.
72 PA22 bidirectional High-sink GPIO PA22 with EXTINT[6], PTC X16/Y16, SERCOM3/PAD[0], TC4/WO[0], CAN0/TX, I2S/SDI, PCC/DATA[6], CCL/IN[6] and I2C support.
73 PA23 bidirectional High-sink GPIO PA23 with EXTINT[7], PTC X17/Y17, SERCOM3/PAD[1], TC4/WO[1], USB/SOF_1KHZ, CAN0/RX, I2S/FS[1], PCC/DATA[7], CCL/IN[7] and I2C support.
74 PA24 bidirectional GPIO PA24 with EXTINT[8], PTC X? none, SERCOM3/PAD[2], TC5/WO[0], TCC2/WO[2], PDEC/PDEC[0], USB/DM, CAN0/TX and CCL/IN[8].
75 PA25 bidirectional GPIO PA25 with EXTINT[9], SERCOM3/PAD[3], TC5/WO[1], PDEC/PDEC[1], USB/DP, CAN0/RX and CCL/OUT[2].
76 GND power_in Ground.
77 VDDIO power_in I/O supply.
78 PB22 bidirectional GPIO PB22 with EXTINT[6], SERCOM1/PAD[2], TC7/WO[0], PDEC/PDEC[2], USB/SOF_1KHZ, GCLK/IO[0] and CCL/IN[0]; also XIN of XOSC1.
79 PB23 bidirectional GPIO PB23 with EXTINT[7], SERCOM1/PAD[3], TC7/WO[1], PDEC/PDEC[0], GCLK/IO[1] and CCL/OUT[0]; also XOUT of XOSC1.
80 PB24 bidirectional GPIO PB24 with EXTINT[8], SERCOM0/PAD[0], SERCOM2/PAD[1], PDEC/PDEC[1] and AC/CMP[0].
81 PB25 bidirectional GPIO PB25 with EXTINT[9], SERCOM0/PAD[1], SERCOM2/PAD[0], PDEC/PDEC[2] and AC/CMP[1].
82 PC24 bidirectional GPIO PC24 with EXTINT[8], SERCOM0/PAD[2], SERCOM2/PAD[2] and CORTEX_CM4/TRACEDATA[3].
83 PC25 bidirectional GPIO PC25 with EXTINT[9], SERCOM0/PAD[3], SERCOM2/PAD[3] and CORTEX_CM4/TRACEDATA[2].
84 PC26 bidirectional GPIO PC26 with EXTINT[10] and CORTEX_CM4/TRACEDATA[1].
85 PC27 bidirectional GPIO PC27 with EXTINT[11], SERCOM1/PAD[0], CORTEX_CM4/TRACECLK, CCL/IN[4]; assumes the SWO role in single-wire trace debug mode.
86 PC28 bidirectional GPIO PC28 with EXTINT[12], SERCOM1/PAD[1], CORTEX_CM4/TRACEDATA[0] and CCL/IN[5].
87 PA27 bidirectional GPIO PA27 with EXTINT[11], PTC X18/Y18 and GCLK/IO[1].
88 RESETN input External reset input, active low.
89 VDDCORE power_in Regulated core supply input/output.
90 GND power_in Ground.
91 VSW passive Switching node of the embedded buck regulator.
92 VDDIO power_in I/O supply.
93 PA30 bidirectional GPIO PA30 with EXTINT[14], PTC X19/Y19, SERCOM7/PAD[2], SERCOM1/PAD[2], TC6/WO[0], TCC2/WO[0], GCLK/IO[0], CCL/IN[3]; serves as SWCLK.
94 PA31 bidirectional GPIO PA31 with EXTINT[15], SERCOM7/PAD[3], SERCOM1/PAD[3], TC6/WO[1], TCC2/WO[1], CCL/OUT[1]; serves as SWDIO.
95 PB30 bidirectional GPIO PB30 with EXTINT[14], SERCOM7/PAD[0], SERCOM5/PAD[1], TC0/WO[0], TCC4/WO[0], TCC0/WO[6]; SWO in non-single-wire debug modes.
96 PB31 bidirectional GPIO PB31 with EXTINT[15], SERCOM7/PAD[1], SERCOM5/PAD[0], TC0/WO[1], TCC4/WO[1] and TCC0/WO[7].
97 PB00 bidirectional GPIO PB00 with EXTINT[0], ADC0/AIN[12], PTC X30/Y30, SERCOM5/PAD[2], TC7/WO[0], CCL/IN[1]; RTC tamper IN0.
98 PB01 bidirectional GPIO PB01 with EXTINT[1], ADC0/AIN[13], PTC X31/Y31, SERCOM5/PAD[3], TC7/WO[1], CCL/IN[2]; SUPC OUT0 and RTC OUT.
99 PB02 bidirectional GPIO PB02 with EXTINT[2], ADC0/AIN[14], PTC X20/Y20, SERCOM5/PAD[0], TC6/WO[0], TCC2/WO[2], CCL/OUT[0]; SUPC OUT1 and RTC IN1.
100 PB03 bidirectional GPIO PB03 with EXTINT[3], ADC0/AIN[15], PTC X21/Y21, SERCOM5/PAD[1] and TC6/WO[1].

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-100(14x14)
Category Single Chip Microcomputer/Microcontroller
Pins 100

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 (VDD, VDDIO/VDDANA) VDD 1.71 3.63 V -40°C to +125°C, DC to 100 MHz 1
VDDIOB supply voltage VDDIOB 1.71 3.63 V 46
VBAT supply voltage VBAT 1.71 3.63 V 46
Operating temperature -40 125 °C Grade F, extended temperature 1
CPU clock frequency 100 MHz 1.71V to 3.63V, -40°C to +125°C, DC to 100 MHz 1
VDDCORE (internal regulator output) VDDCORE 1.2 V Output for monitoring only, not an external supply input 46

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 pet nu1RBase nu1 I Crypto RAM u2RLength Base of R Base of R value filled repetitively with u4FillValue 1316
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. 1697

CAD (KiCad official)

  • Symbol: ATSAME51N20A-AFT
  • Footprint: Package_QFP:TQFP-100_14x14mm_P0.5mm
  • 3D model: TQFP-100(14x14) (KiCad packages3D, STEP)
  • 3D model files: atsame51n20a-aft-etched.step / atsame51n20a-aft-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsame51n20a-aft.step / atsame51n20a-aft.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (1934 pp, sha256 6f02ccc3e69325ab, retrieved 2026-10-31, 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