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ATSAMD51J18A-AU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, TQFP-64(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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Datasheet
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Contents
README
markdownATSAMD51J18A-AU
Microchip Tech · Pre-ordered MCUs · TQFP-64(10x10)
ATSAMD51J18A-AU 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 PA00 (EXTINT[0]); also XIN32 for XOSC32K, SERCOM1/PAD[0], TC2/WO[0]. |
| 2 | PA01 | bidirectional | General-purpose I/O PA01 (EXTINT[1]); also XOUT32 for XOSC32K, SERCOM1/PAD[1], TC2/WO[1]. |
| 3 | PA02 | bidirectional | General-purpose I/O PA02 (EXTINT[2]) with ADC0/AIN[0] and DAC/VOUT[0]; RTC tamper IN2. |
| 4 | PA03 | bidirectional | General-purpose I/O PA03 (EXTINT[3]) with ADC0/AIN[1], ANAREF/VREFA and PTC X0/Y0. |
| 5 | PB04 | bidirectional | General-purpose I/O PB04 (EXTINT[4]) with ADC1/AIN[6] and PTC X22/Y22. |
| 6 | PB05 | bidirectional | General-purpose I/O PB05 (EXTINT[5]) with ADC1/AIN[7] and PTC X23/Y23. |
| 7 | GNDANA | power_in | Ground for the analog supply (VDDANA). |
| 8 | VDDANA | power_in | Analog supply input. |
| 9 | PB06 | bidirectional | General-purpose I/O PB06 (EXTINT[6]) with ADC1/AIN[8], PTC X24/Y24, CCL/IN[6]. |
| 10 | PB07 | bidirectional | General-purpose I/O PB07 (EXTINT[7]) with ADC1/AIN[9], PTC X25/Y25, CCL/IN[7]. |
| 11 | PB08 | bidirectional | General-purpose I/O PB08 (EXTINT[8]) with ADC0/AIN[2], ADC1/AIN[0], SERCOM4/PAD[0], TC4/WO[0]. |
| 12 | PB09 | bidirectional | General-purpose I/O PB09 (EXTINT[9]) with ADC0/AIN[3], ADC1/AIN[1], SERCOM4/PAD[1], TC4/WO[1]. |
| 13 | PA04 | bidirectional | General-purpose I/O PA04 (EXTINT[4]) with ADC0/AIN[4], ANAREF/VREFB, AC/AIN[0], SERCOM0/PAD[0]. |
| 14 | PA05 | bidirectional | General-purpose I/O PA05 (EXTINT[5]) with ADC0/AIN[5], AC/AIN[1], DAC/VOUT[1], SERCOM0/PAD[1]. |
| 15 | PA06 | bidirectional | General-purpose I/O PA06 (EXTINT[6]) with ADC0/AIN[6], ANAREF/VREFC, AC/AIN[2], SERCOM0/PAD[2]. |
| 16 | PA07 | bidirectional | General-purpose I/O PA07 (EXTINT[7]) with ADC0/AIN[7], AC/AIN[3], SERCOM0/PAD[3]. |
| 17 | PA08 | bidirectional | General-purpose I/O PA08 (NMI), high-sink pin with I2C support, supplied by VDDIOB; ADC0/AIN[8], SERCOM0/PAD[0], QSPI/DATA[0]. |
| 18 | PA09 | bidirectional | General-purpose I/O PA09 (EXTINT[9]), high-sink pin with I2C support, supplied by VDDIOB; ADC0/AIN[9], SERCOM0/PAD[1], QSPI/DATA[1]. |
| 19 | PA10 | bidirectional | General-purpose I/O PA10 (EXTINT[10]) with ADC0/AIN[10], SERCOM0/PAD[2], QSPI/DATA[2], GCLK/IO[4]. |
| 20 | PA11 | bidirectional | General-purpose I/O PA11 (EXTINT[11]) with ADC0/AIN[11], SERCOM0/PAD[3], QSPI/DATA[3], GCLK/IO[5]. |
| 21 | VDDIOB | power_in | I/O supply for the PA08-PA11 cluster (VDDIOB). |
| 22 | GND | power_in | Ground. |
| 23 | PB10 | bidirectional | General-purpose I/O PB10 (EXTINT[10]) with SERCOM4/PAD[2], QSPI/SCK, GCLK/IO[4]. |
| 24 | PB11 | bidirectional | General-purpose I/O PB11 (EXTINT[11]) with SERCOM4/PAD[3], QSPI/CS, GCLK/IO[5]. |
| 25 | PB12 | bidirectional | General-purpose I/O PB12 (EXTINT[12]) with PTC X26/Y26, SERCOM4/PAD[0], CAN1/TX. |
| 26 | PB13 | bidirectional | General-purpose I/O PB13 (EXTINT[13]) with PTC X27/Y27, SERCOM4/PAD[1], CAN1/RX. |
| 27 | PB14 | bidirectional | General-purpose I/O PB14 (EXTINT[14]) with PTC X28/Y28, SERCOM4/PAD[2], GCLK/IO[0]. |
| 28 | PB15 | bidirectional | General-purpose I/O PB15 (EXTINT[15]) with PTC X29/Y29, SERCOM4/PAD[3], GCLK/IO[1]. |
| 29 | PA12 | bidirectional | General-purpose I/O PA12, high-sink pin with I2C support (supplied by VDDIO); multiplexed peripheral functions A-N. |
| 30 | PA13 | bidirectional | General-purpose I/O PA13, high-sink pin with I2C support (supplied by VDDIO); multiplexed peripheral functions A-N. |
| 31 | PA14 | bidirectional | General-purpose I/O PA14; also XIN for XOSC0 (VDDIO supply). |
| 32 | PA15 | bidirectional | General-purpose I/O PA15; also XOUT for XOSC0 (VDDIO supply). |
| 33 | GND | power_in | Ground. |
| 34 | VDDIO | power_in | Digital I/O supply. |
| 35 | PA16 | bidirectional | General-purpose I/O PA16, high-sink pin with I2C support; GRXDV is available on this pin in the 64-pin package. |
| 36 | PA17 | bidirectional | General-purpose I/O PA17, high-sink pin with I2C support (supplied by VDDIO); multiplexed peripheral functions A-N. |
| 37 | PA18 | bidirectional | General-purpose I/O PA18; multiplexed peripheral functions A-N. |
| 38 | PA19 | bidirectional | General-purpose I/O PA19; multiplexed peripheral functions A-N. |
| 39 | PB16 | bidirectional | General-purpose I/O PB16; multiplexed peripheral functions A-N. |
| 40 | PB17 | bidirectional | General-purpose I/O PB17; multiplexed peripheral functions A-N. |
| 41 | PA20 | bidirectional | General-purpose I/O PA20 (EXTINT[4]) with PTC X14/Y14, SERCOM5/PAD[2], TC7/WO[0]. |
| 42 | PA21 | bidirectional | General-purpose I/O PA21 (EXTINT[5]) with PTC X15/Y15, SERCOM5/PAD[3], TC7/WO[1]. |
| 43 | PA22 | bidirectional | General-purpose I/O PA22 (EXTINT[6]), high-sink pin with I2C support; PTC X16/Y16, SERCOM3/PAD[0], TC4/WO[0]. |
| 44 | PA23 | bidirectional | General-purpose I/O PA23 (EXTINT[7]), high-sink pin with I2C support; PTC X17/Y17, SERCOM3/PAD[1], USB/SOF_1KHZ. |
| 45 | PA24 | bidirectional | General-purpose I/O PA24 (EXTINT[8]) with USB/DM, SERCOM3/PAD[2], CAN0/TX. |
| 46 | PA25 | bidirectional | General-purpose I/O PA25 (EXTINT[9]) with USB/DP, SERCOM3/PAD[3], CAN0/RX. |
| 47 | GND | power_in | Ground. |
| 48 | VDDIO | power_in | Digital I/O supply. |
| 49 | PB22 | bidirectional | General-purpose I/O PB22 (EXTINT[6]); also XIN for XOSC1, SERCOM1/PAD[2], GCLK/IO[0]. |
| 50 | PB23 | bidirectional | General-purpose I/O PB23 (EXTINT[7]); also XOUT for XOSC1, SERCOM1/PAD[3], GCLK/IO[1]. |
| 51 | PA27 | bidirectional | General-purpose I/O PA27 (EXTINT[11]) with PTC X18/Y18 and GCLK/IO[1]. |
| 52 | RESETN | input | Active-low external reset input. |
| 53 | VDDCORE | power_in | Regulated core supply input/output (decoupling pin). |
| 54 | GND | power_in | Ground. |
| 55 | VSW | power_out | Switching output of the embedded buck regulator. |
| 56 | VDDIO | power_in | Digital I/O supply. |
| 57 | PA30 | bidirectional | General-purpose I/O PA30 (EXTINT[14]); SWCLK serial wire debug clock, SERCOM7/PAD[2], GCLK/IO[0]. |
| 58 | PA31 | bidirectional | General-purpose I/O PA31 (EXTINT[15]); SWDIO serial wire debug data, SERCOM7/PAD[3]. |
| 59 | PB30 | bidirectional | General-purpose I/O PB30 (EXTINT[14]); SWO output in non-single-wire debug modes, SERCOM7/PAD[0]. |
| 60 | PB31 | bidirectional | General-purpose I/O PB31 (EXTINT[15]) with SERCOM7/PAD[1], TC0/WO[1], TCC4/WO[1]. |
| 61 | PB00 | bidirectional | General-purpose I/O PB00 (EXTINT[0]) with ADC0/AIN[12], PTC X30/Y30, RTC tamper IN0. |
| 62 | PB01 | bidirectional | General-purpose I/O PB01 (EXTINT[1]) with ADC0/AIN[13], PTC X31/Y31, RTC tamper OUT / SUPC OUT0. |
| 63 | PB02 | bidirectional | General-purpose I/O PB02 (EXTINT[2]) with ADC0/AIN[14], PTC X20/Y20, RTC tamper IN1 / SUPC OUT1. |
| 64 | PB03 | bidirectional | General-purpose I/O PB03 (EXTINT[3]) with ADC0/AIN[15], PTC X21/Y21, SERCOM5/PAD[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 |
|---|---|---|---|---|---|---|---|
| Operating supply voltage | VDD | 1.71 | 3.63 | V | -40°C to +85°C, DC to 120 MHz | 1 | |
| Operating temperature | -40 | 85 | °C | Package grade U (Industrial) | 19 | ||
| VDDIOB supply voltage | VDDIOB | 1.71 | 3.63 | V | VDDIOB must be equal to or lower than VDDIO | 46 | |
| VBAT supply voltage | VBAT | 1.71 | 3.63 | V | 46 | ||
| VDDCORE voltage (internal regulator output) | VDDCORE | 1.2 | V | Typical; output for monitoring, not an 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:
ATSAMD51J18A-AU - Footprint:
Package_QFP:TQFP-64_10x10mm_P0.5mm - 3D model: TQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files:
atsamd51j18a-au-etched.step/atsamd51j18a-au-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atsamd51j18a-au.step/atsamd51j18a-au.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 2026-11-13, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).