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ATSAME51N20A-AUT
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Microchip Tech Pre-ordered MCUs, TQFP-100(14x14). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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ATSAME51N20A-AUT
Microchip Tech · Pre-ordered MCUs · TQFP-100(14x14)
ATSAME51N20A-AUT 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 | General-purpose I/O PA00 with EIC EXTINT[0] and SERCOM1 PAD[0], shared with XIN32 of the XOSC32K 32.768 kHz crystal oscillator. |
| 2 | PA01 | bidirectional | General-purpose I/O PA01 with EIC EXTINT[1] and SERCOM1 PAD[1], shared with XOUT32 of the XOSC32K 32.768 kHz crystal oscillator. |
| 3 | PC00 | bidirectional | General-purpose I/O PC00 with EIC EXTINT[0] and ADC1 AIN[10]; it must stay static for XOSC32K crystal-mode behaviour and is also RTC tamper input IN3. |
| 4 | PC01 | bidirectional | General-purpose I/O PC01 with EIC EXTINT[1] and ADC1 AIN[11]; it must stay static for XOSC32K crystal-mode behaviour and is also RTC tamper input IN4. |
| 5 | PC02 | bidirectional | General-purpose I/O PC02 with EIC EXTINT[2] and ADC1 AIN[4]. |
| 6 | PC03 | bidirectional | General-purpose I/O PC03 with EIC EXTINT[3] and ADC1 AIN[5]. |
| 7 | PA02 | bidirectional | General-purpose I/O PA02 with EIC EXTINT[2], ADC0 AIN[0] and DAC VOUT[0]; it is also RTC tamper input IN2. |
| 8 | PA03 | bidirectional | General-purpose I/O PA03 with EIC EXTINT[3], ADC0 AIN[1], ANAREF VREFA and PTC X0/Y0. |
| 9 | PB04 | bidirectional | General-purpose I/O PB04 with EIC EXTINT[4], ADC1 AIN[6] and PTC X22/Y22. |
| 10 | PB05 | bidirectional | General-purpose I/O PB05 with EIC EXTINT[5], ADC1 AIN[7] and PTC X23/Y23. |
| 11 | GNDANA | power_in | Analog ground for the ADC, DAC and analog comparator blocks. |
| 12 | VDDANA | power_in | Analog supply for the analog peripherals; the device operating range is 1.71 V to 3.63 V. |
| 13 | PB06 | bidirectional | General-purpose I/O PB06 with EIC EXTINT[6], ADC1 AIN[8], PTC X24/Y24 and CCL IN[6]. |
| 14 | PB07 | bidirectional | General-purpose I/O PB07 with EIC EXTINT[7], ADC1 AIN[9], PTC X25/Y25 and CCL IN[7]. |
| 15 | PB08 | bidirectional | General-purpose I/O PB08 with EIC EXTINT[8], ADC0 AIN[2], ADC1 AIN[0], PTC X1/Y1, SERCOM4 PAD[0], TC4 WO[0] and CCL IN[8]. |
| 16 | PB09 | bidirectional | General-purpose I/O PB09 with EIC EXTINT[9], ADC0 AIN[3], ADC1 AIN[1], PTC X2/Y2, SERCOM4 PAD[1], TC4 WO[1] and CCL OUT[2]. |
| 17 | PA04 | bidirectional | General-purpose I/O PA04 with EIC 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 | General-purpose I/O PA05 with EIC EXTINT[5], ADC0 AIN[5], AC AIN[1], DAC VOUT[1], SERCOM0 PAD[1], TC0 WO[1] and CCL IN[1]. |
| 19 | PA06 | bidirectional | General-purpose I/O PA06 with EIC EXTINT[6], ANAREF VREFC, ADC0 AIN[6], AC AIN[2], PTC X4/Y4, SERCOM0 PAD[2], TC1 WO[0] and CCL IN[2]. |
| 20 | PA07 | bidirectional | General-purpose I/O PA07 with EIC EXTINT[7], ADC0 AIN[7], AC AIN[3], PTC X5/Y5, SERCOM0 PAD[3], TC1 WO[1] and CCL OUT[0]. |
| 21 | PC05 | bidirectional | General-purpose I/O PC05 with EIC EXTINT[5] and SERCOM6 PAD[1]. |
| 22 | PC06 | bidirectional | General-purpose I/O PC06 with EIC EXTINT[6], SERCOM6 PAD[2] and SDHC0 SDCD. |
| 23 | PC07 | bidirectional | General-purpose I/O PC07 with EIC EXTINT[9], SERCOM6 PAD[3] and SDHC0 SDWP. |
| 24 | GND | power_in | Digital ground reference. |
| 25 | VDDIOB | power_in | I/O supply for the VDDIOB pin group, which includes the I2C-capable pins PA08 and PA09. |
| 26 | PA08 | bidirectional | High-sink I/O PA08 with EIC NMI, ADC0 AIN[8], ADC1 AIN[2], PTC X6/Y6, SERCOM0 PAD[0], SERCOM2 PAD[1], TC0 WO[0], TCC0 WO[0], TCC1 WO[4], QSPI DATA[0], SDHC0 SDCMD, I2S MCK[0] and CCL IN[3]. |
| 27 | PA09 | bidirectional | High-sink I/O PA09 with EIC EXTINT[9], ADC0 AIN[9], ADC1 AIN[3], PTC X7/Y7, SERCOM0 PAD[1], SERCOM2 PAD[0], TC0 WO[1], TCC0 WO[1], QSPI DATA[1], SDHC0 SDDAT[0], I2S FS[0] and CCL IN[4]. |
| 28 | PA10 | bidirectional | General-purpose I/O PA10 with EIC EXTINT[10], ADC0 AIN[10], PTC X8/Y8, SERCOM0 PAD[2], SERCOM2 PAD[2], TC1 WO[0], TCC0 WO[2], QSPI DATA[2], SDHC0 SDDAT[1], I2S SCK[0], GCLK IO[4] and CCL IN[5]. |
| 29 | PA11 | bidirectional | General-purpose I/O PA11 with EIC EXTINT[11], ADC0 AIN[11], PTC X9/Y9, SERCOM0 PAD[3], SERCOM2 PAD[3], TC1 WO[1], TCC0 WO[3], QSPI DATA[3], SDHC0 SDDAT[2], I2S SDO, GCLK IO[5] and CCL OUT[1]. |
| 30 | VDDIOB | power_in | I/O supply for the VDDIOB pin group, which includes the I2C-capable pins PA08 and PA09. |
| 31 | GND | power_in | Digital ground reference. |
| 32 | PB10 | bidirectional | General-purpose I/O PB10 with EIC EXTINT[10], SERCOM4 PAD[2], TC5 WO[0], TCC0 WO[4], TCC1 WO[0], QSPI SCK, SDHC0 SDDAT[3], I2S SDI, GCLK IO[4] and CCL IN[11]. |
| 33 | PB11 | bidirectional | General-purpose I/O PB11 with EIC EXTINT[11], SERCOM4 PAD[3], TC5 WO[1], TCC0 WO[5], TCC1 WO[1], QSPI CS, SDHC0 SDCK, I2S FS[1], GCLK IO[5] and CCL OUT[1]. |
| 34 | PB12 | bidirectional | General-purpose I/O PB12 with EIC EXTINT[12], PTC X26/Y26, SERCOM4 PAD[0], TC4 WO[0], TCC3 WO[0], TCC0 WO[0], CAN1 TX, SDHC0 SDCD, I2S SCK[1] and GCLK IO[6]. |
| 35 | PB13 | bidirectional | General-purpose I/O PB13 with EIC EXTINT[13], PTC X27/Y27, SERCOM4 PAD[1], TC4 WO[1], TCC3 WO[1], TCC0 WO[1], CAN1 RX, SDHC0 SDWP, I2S MCK[1] and GCLK IO[7]. |
| 36 | PB14 | bidirectional | General-purpose I/O PB14 with EIC EXTINT[14], PTC X28/Y28, SERCOM4 PAD[2], TC5 WO[0], TCC4 WO[0], TCC0 WO[2], CAN1 TX, PCC DATA[8], GMAC GMDC, GCLK IO[0] and CCL IN[9]. |
| 37 | PB15 | bidirectional | General-purpose I/O PB15 with EIC EXTINT[15], PTC X29/Y29, SERCOM4 PAD[3], TC5 WO[1], TCC4 WO[1], TCC0 WO[3], CAN1 RX, PCC DATA[9], GMAC GMDIO, GCLK IO[1] and CCL IN[10]. |
| 38 | GND | power_in | Digital ground reference. |
| 39 | VDDIO | power_in | Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V. |
| 40 | PC10 | bidirectional | General-purpose I/O PC10 with EIC EXTINT[10], SERCOM6 PAD[2], SERCOM7 PAD[2], TCC0 WO[0] and TCC1 WO[4]. |
| 41 | PC11 | bidirectional | General-purpose I/O PC11 with EIC EXTINT[11], SERCOM6 PAD[3], SERCOM7 PAD[3], TCC0 WO[1], TCC1 WO[5] and GMAC GMDC. |
| 42 | PC12 | bidirectional | General-purpose I/O PC12 with selectable peripheral functions A to N through the PORT multiplexer. |
| 43 | PC13 | bidirectional | General-purpose I/O PC13 with selectable peripheral functions A to N through the PORT multiplexer. |
| 44 | PC14 | bidirectional | General-purpose I/O PC14 with selectable peripheral functions A to N through the PORT multiplexer. |
| 45 | PC15 | bidirectional | General-purpose I/O PC15 with selectable peripheral functions A to N through the PORT multiplexer. |
| 46 | PA12 | bidirectional | High-sink I/O PA12 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N. |
| 47 | PA13 | bidirectional | High-sink I/O PA13 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N. |
| 48 | PA14 | bidirectional | I/O PA14 that is the XIN pin of the XOSC0 main crystal oscillator, with selectable peripheral functions A to N. |
| 49 | PA15 | bidirectional | I/O PA15 that is the XOUT pin of the XOSC0 main crystal oscillator, with selectable peripheral functions A to N. |
| 50 | GND | power_in | Digital ground reference. |
| 51 | VDDIO | power_in | Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V. |
| 52 | PA16 | bidirectional | High-sink I/O PA16 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N. |
| 53 | PA17 | bidirectional | High-sink I/O PA17 that supports SERCOM I2C on the VDDIO group, with selectable peripheral functions A to N. |
| 54 | PA18 | bidirectional | General-purpose I/O PA18 with selectable peripheral functions A to N through the PORT multiplexer. |
| 55 | PA19 | bidirectional | General-purpose I/O PA19 with selectable peripheral functions A to N through the PORT multiplexer. |
| 56 | PC16 | bidirectional | General-purpose I/O PC16 with selectable peripheral functions A to N through the PORT multiplexer. |
| 57 | PC17 | bidirectional | General-purpose I/O PC17 with selectable peripheral functions A to N through the PORT multiplexer. |
| 58 | PC18 | bidirectional | General-purpose I/O PC18 with selectable peripheral functions A to N through the PORT multiplexer. |
| 59 | PC19 | bidirectional | General-purpose I/O PC19 with selectable peripheral functions A to N through the PORT multiplexer. |
| 60 | PC20 | bidirectional | General-purpose I/O PC20 with selectable peripheral functions A to N through the PORT multiplexer. |
| 61 | PC21 | bidirectional | General-purpose I/O PC21 with selectable peripheral functions A to N through the PORT multiplexer. |
| 62 | GND | power_in | Digital ground reference. |
| 63 | VDDIO | power_in | Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V. |
| 64 | PB16 | bidirectional | General-purpose I/O PB16 with selectable peripheral functions A to N through the PORT multiplexer. |
| 65 | PB17 | bidirectional | General-purpose I/O PB17 with selectable peripheral functions A to N through the PORT multiplexer. |
| 66 | PB18 | bidirectional | General-purpose I/O PB18 with selectable peripheral functions A to N through the PORT multiplexer. |
| 67 | PB19 | bidirectional | General-purpose I/O PB19 with selectable peripheral functions A to N through the PORT multiplexer. |
| 68 | PB20 | bidirectional | General-purpose I/O PB20 with EIC EXTINT[4], SERCOM3 PAD[0], SERCOM7 PAD[1], TCC1 WO[2], PDEC PDEC[2], SDHC1 SDDAT[2] and GCLK IO[6]. |
| 69 | PB21 | bidirectional | General-purpose I/O PB21 with EIC EXTINT[5], SERCOM3 PAD[1], SERCOM7 PAD[0], TCC1 WO[3], SDHC1 SDDAT[3] and GCLK IO[7]. |
| 70 | PA20 | bidirectional | General-purpose I/O PA20 with EIC EXTINT[4], PTC X14/Y14, SERCOM5 PAD[2], SERCOM3 PAD[2], TC7 WO[0], TCC1 WO[4], TCC0 WO[0], SDHC1 SDCMD, I2S FS[0], PCC DATA[4] and GMAC GMDC. |
| 71 | PA21 | bidirectional | General-purpose I/O PA21 with EIC EXTINT[5], PTC X15/Y15, SERCOM5 PAD[3], SERCOM3 PAD[3], TC7 WO[1], TCC1 WO[5], TCC0 WO[1], SDHC1 SDCK, I2S SDO, PCC DATA[5] and GMAC GMDIO. |
| 72 | PA22 | bidirectional | High-sink I/O PA22 with EIC EXTINT[6], PTC X16/Y16, SERCOM3 PAD[0], SERCOM5 PAD[1], TC4 WO[0], TCC1 WO[6], TCC0 WO[2], CAN0 TX, I2S SDI, PCC DATA[6] and CCL IN[6]; it supports SERCOM I2C on VDDIO. |
| 73 | PA23 | bidirectional | High-sink I/O PA23 with EIC EXTINT[7], PTC X17/Y17, SERCOM3 PAD[1], SERCOM5 PAD[0], TC4 WO[1], TCC1 WO[7], TCC0 WO[3], USB SOF 1 kHz, CAN0 RX, I2S FS[1], PCC DATA[7] and CCL IN[7]; it supports SERCOM I2C on VDDIO. |
| 74 | PA24 | bidirectional | General-purpose I/O PA24 with EIC EXTINT[8], SERCOM3 PAD[2], SERCOM5 PAD[2], TC5 WO[0], TCC2 WO[2], PDEC PDEC[0], USB DM, CAN0 TX and CCL IN[8]. |
| 75 | PA25 | bidirectional | General-purpose I/O PA25 with EIC EXTINT[9], SERCOM3 PAD[3], SERCOM5 PAD[3], TC5 WO[1], PDEC PDEC[1], USB DP, CAN0 RX and CCL OUT[2]. |
| 76 | GND | power_in | Digital ground reference. |
| 77 | VDDIO | power_in | Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V. |
| 78 | PB22 | bidirectional | General-purpose I/O PB22 with EIC EXTINT[6], SERCOM1 PAD[2], SERCOM5 PAD[2], TC7 WO[0], PDEC PDEC[2], USB SOF 1 kHz, GCLK IO[0] and CCL IN[0]; it is also XIN of XOSC1. |
| 79 | PB23 | bidirectional | General-purpose I/O PB23 with EIC EXTINT[7], SERCOM1 PAD[3], SERCOM5 PAD[3], TC7 WO[1], PDEC PDEC[0], GCLK IO[1] and CCL OUT[0]; it is also XOUT of XOSC1. |
| 80 | PB24 | bidirectional | General-purpose I/O PB24 with EIC EXTINT[8], SERCOM0 PAD[0], SERCOM2 PAD[1], PDEC PDEC[1] and AC CMP[0]. |
| 81 | PB25 | bidirectional | General-purpose I/O PB25 with EIC EXTINT[9], SERCOM0 PAD[1], SERCOM2 PAD[0], PDEC PDEC[2] and AC CMP[1]. |
| 82 | PC24 | bidirectional | General-purpose I/O PC24 with EIC EXTINT[8], SERCOM0 PAD[2], SERCOM2 PAD[2] and trace output TRACEDATA[3]. |
| 83 | PC25 | bidirectional | General-purpose I/O PC25 with EIC EXTINT[9], SERCOM0 PAD[3], SERCOM2 PAD[3] and trace output TRACEDATA[2]. |
| 84 | PC26 | bidirectional | General-purpose I/O PC26 with EIC EXTINT[10] and trace output TRACEDATA[1]. |
| 85 | PC27 | bidirectional | General-purpose I/O PC27 with EIC EXTINT[11], SERCOM1 PAD[0], trace clock TRACECLK and CCL IN[4]; it takes the SWO role when trace is used in single-wire debug mode. |
| 86 | PC28 | bidirectional | General-purpose I/O PC28 with EIC EXTINT[12], SERCOM1 PAD[1], trace output TRACEDATA[0] and CCL IN[5]. |
| 87 | PA27 | bidirectional | General-purpose I/O PA27 with EIC EXTINT[11], PTC X18/Y18 and GCLK IO[1]. |
| 88 | RESETN | input | Active-low external reset input. |
| 89 | VDDCORE | power_in | Core voltage pin for the device's internal logic. |
| 90 | GND | power_in | Digital ground reference. |
| 91 | VSW | power_out | Switching-node pin associated with the embedded Buck/LDO regulator; its external connection is not described in the provided text. |
| 92 | VDDIO | power_in | Digital I/O supply for its pin group; the device operating range is 1.71 V to 3.63 V. |
| 93 | PA30 | bidirectional | I/O PA30 that is the SWCLK Serial Wire Debug clock, also with EIC EXTINT[14], PTC X19/Y19, SERCOM1/SERCOM7 PAD[2], TC6 WO[0], TCC2 WO[0], GCLK IO[0] and CCL IN[3]. |
| 94 | PA31 | bidirectional | I/O PA31 that is the SWDIO Serial Wire Debug data pin, also with EIC EXTINT[15], SERCOM1/SERCOM7 PAD[3], TC6 WO[1], TCC2 WO[1] and CCL OUT[1]. |
| 95 | PB30 | bidirectional | General-purpose I/O PB30 with EIC EXTINT[14], SERCOM7 PAD[0], SERCOM5 PAD[1], TC0 WO[0], TCC4 WO[0] and TCC0 WO[6]; it carries SWO in debug modes other than single-wire trace. |
| 96 | PB31 | bidirectional | General-purpose I/O PB31 with EIC EXTINT[15], SERCOM7 PAD[1], SERCOM5 PAD[0], TC0 WO[1], TCC4 WO[1] and TCC0 WO[7]. |
| 97 | PB00 | bidirectional | General-purpose I/O PB00 with EIC EXTINT[0], ADC0 AIN[12], PTC X30/Y30, SERCOM5 PAD[2], TC7 WO[0] and CCL IN[1]; it is also RTC tamper input IN0 and part of the XOSC32K jitter-minimisation set. |
| 98 | PB01 | bidirectional | General-purpose I/O PB01 with EIC EXTINT[1], ADC0 AIN[13], PTC X31/Y31, SERCOM5 PAD[3], TC7 WO[1] and CCL IN[2]; it is also RTC tamper output OUT and SUPC OUT0, with RTC priority if both are enabled. |
| 99 | PB02 | bidirectional | General-purpose I/O PB02 with EIC EXTINT[2], ADC0 AIN[14], PTC X20/Y20, SERCOM5 PAD[0], TC6 WO[0], TCC2 WO[2] and CCL OUT[0]; it is also RTC tamper input IN1 and SUPC OUT1. |
| 100 | PB03 | bidirectional | General-purpose I/O PB03 with EIC EXTINT[3], ADC0 AIN[15], PTC X21/Y21, SERCOM5 PAD[1] and TC6 WO[1]; it is part of the XOSC32K jitter-minimisation set. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-100(14x14) |
| Category | Embedded Processors & Controllers |
| 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 VDDIO (I/O, XOSCn, VDDCORE regulator input) | VDDIO | 1.71 | 3.63 | V | 46 | ||
| Supply voltage VDDIOB (I/O B lines) | VDDIOB | 1.71 | 3.63 | V | 46 | ||
| Supply voltage VDDANA (analog, ADC, AC, DAC, PTC) | VDDANA | 1.71 | 3.63 | V | 46 | ||
| Supply voltage VBAT (Automatic Power Switch) | VBAT | 1.71 | 3.63 | V | 46 | ||
| Operating temperature range (grade U, Industrial) | -40 | 85 | °C | Operating at up to 120 MHz | 1 | ||
| Maximum operating frequency (DC to) | 120 | MHz | -40°C to +85°C | 1 | |||
| VDDCORE internal regulator output voltage | VDDCORE | 1.2 | V | 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-AUT - Footprint:
Package_QFP:TQFP-100_14x14mm_P0.5mm - 3D model: TQFP-100(14x14) (KiCad packages3D, STEP)
- 3D model files:
atsame51n20a-aut-etched.step/atsame51n20a-aut-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atsame51n20a-aut.step/atsame51n20a-aut.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (1934 pp, sha256
6f02ccc3e69325ab, retrieved 2026-10-30, 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).