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

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ATSAME51G19A-MU

Microchip Tech · Pre-ordered MCUs · QFN-48-EP(7x7)

ATSAME51G19A-MU 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 pin PA00 (VDDIO group) that can also be used as EXTINT[0], SERCOM1 PAD[0], TC2 WO[0], or XIN32 of the 32 kHz crystal oscillator (XOSC32K).
2	PA01	bidirectional	General-purpose I/O pin PA01 that can also be used as EXTINT[1], SERCOM1 PAD[1], TC2 WO[1], or XOUT32 of the 32 kHz crystal oscillator (XOSC32K).
3	PA02	bidirectional	General-purpose I/O pin PA02 that can also be used as EXTINT[2], ADC0 AIN[0], DAC VOUT[0], or RTC tamper input IN2.
4	PA03	bidirectional	General-purpose I/O pin PA03 that can also be used as EXTINT[3], ADC0 AIN[1], ANAREF VREFA, or PTC X0/Y0.
5	GNDANA	power_in	Analog ground pin for the analog peripherals (ADC, DAC, AC, PTC).
6	VDDANA	power_in	Analog supply pin for the analog peripherals; device operating range is 1.71 V to 3.63 V.
7	PB08	bidirectional	General-purpose I/O pin PB08 that can also be used as EXTINT[8], ADC0 AIN[2], ADC1 AIN[0], PTC X1/Y1, SERCOM4 PAD[0], TC4 WO[0], or CCL IN[8].
8	PB09	bidirectional	General-purpose I/O pin PB09 that can also be used as EXTINT[9], ADC0 AIN[3], ADC1 AIN[1], PTC X2/Y2, SERCOM4 PAD[1], TC4 WO[1], or CCL OUT[2].
9	PA04	bidirectional	General-purpose I/O pin PA04 that can also be used as EXTINT[4], ANAREF VREFB, ADC0 AIN[4], AC AIN[0], PTC X3/Y3, SERCOM0 PAD[0], TC0 WO[0], or CCL IN[0].
10	PA05	bidirectional	General-purpose I/O pin PA05 that can also be used as EXTINT[5], ADC0 AIN[5], AC AIN[1], DAC VOUT[1], SERCOM0 PAD[1], TC0 WO[1], or CCL IN[1].
11	PA06	bidirectional	General-purpose I/O pin PA06 that can also be used as EXTINT[6], ANAREF VREFC, ADC0 AIN[6], AC AIN[2], PTC X4/Y4, SERCOM0 PAD[2], TC1 WO[0], SDHC0 SDCD, or CCL IN[2].
12	PA07	bidirectional	General-purpose I/O pin PA07 that can also be used as EXTINT[7], ADC0 AIN[7], AC AIN[3], PTC X5/Y5, SERCOM0 PAD[3], TC1 WO[1], SDHC0 SDWP, or CCL OUT[0].
13	PA08	bidirectional	High-sink I/O pin PA08 (VDDIOB group, I2C capable) that can also be used as NMI, ADC0 AIN[8], ADC1 AIN[2], PTC X6/Y6, SERCOM0 PAD[0], SERCOM2 PAD[1], TCC0/TCC1 WO, QSPI DATA[0], SDHC0 SDCMD, I2S MCK[0], or CCL IN[3].
14	PA09	bidirectional	High-sink-capable I/O pin PA09 (VDDIOB group, I2C capable) that can also be used as EXTINT[9], ADC0 AIN[9], ADC1 AIN[3], PTC X7/Y7, SERCOM0 PAD[1], SERCOM2 PAD[0], TC0/TCC0/TCC1 WO, QSPI DATA[1], SDHC0 SDDAT[0], I2S FS[0], or CCL IN[4].
15	PA10	bidirectional	General-purpose I/O pin PA10 that can also be used as EXTINT[10], ADC0 AIN[10], PTC X8/Y8, SERCOM0 PAD[2], SERCOM2 PAD[2], TC1/TCC0/TCC1 WO, QSPI DATA[2], SDHC0 SDDAT[1], I2S SCK[0], GCLK IO[4], or CCL IN[5].
16	PA11	bidirectional	General-purpose I/O pin PA11 that can also be used as EXTINT[11], ADC0 AIN[11], PTC X9/Y9, SERCOM0 PAD[3], SERCOM2 PAD[3], TC1/TCC0/TCC1 WO, QSPI DATA[3], SDHC0 SDDAT[2], I2S SDO, GCLK IO[5], or CCL OUT[1].
17	VDDIO	power_in	Digital I/O supply for the GPIO pin cluster; device operating range is 1.71 V to 3.63 V.
18	GND	power_in	Digital ground pin.
19	PB10	bidirectional	General-purpose I/O pin PB10 that can also be used as EXTINT[10], SERCOM4 PAD[2], TC5/TCC0/TCC1 WO, QSPI SCK, SDHC0 SDDAT[3], I2S SDI, GCLK IO[4], or CCL IN[11].
20	PB11	bidirectional	General-purpose I/O pin PB11 that can also be used as EXTINT[11], SERCOM4 PAD[3], TC5/TCC0/TCC1 WO, QSPI CS, SDHC0 SDCK, I2S FS[1], GCLK IO[5], or CCL OUT[1].
21	PA12	bidirectional	High-sink-capable I/O pin PA12 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text.
22	PA13	bidirectional	High-sink-capable I/O pin PA13 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text.
23	PA14	bidirectional	General-purpose I/O pin PA14, which is the XIN pin of crystal oscillator XOSC0 when that oscillator is used.
24	PA15	bidirectional	General-purpose I/O pin PA15, which is the XOUT pin of crystal oscillator XOSC0 when that oscillator is used.
25	PA16	bidirectional	High-sink-capable I/O pin PA16 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text.
26	PA17	bidirectional	High-sink-capable I/O pin PA17 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text.
27	PA18	bidirectional	General-purpose I/O pin PA18; its multiplexing list is on a page not included in the provided text.
28	PA19	bidirectional	General-purpose I/O pin PA19; its multiplexing list is on a page not included in the provided text.
29	PA20	bidirectional	General-purpose I/O pin PA20 that can also be used as EXTINT[4], PTC X14/Y14, SERCOM5/SERCOM3 PAD[2], TC7/TCC0/TCC1 WO, SDHC1 SDCMD, I2S FS[0], PCC DATA[4], or GMAC GMDC.
30	PA21	bidirectional	General-purpose I/O pin PA21 that can also be used as EXTINT[5], PTC X15/Y15, SERCOM5/SERCOM3 PAD[3], TC7/TCC0/TCC1 WO, SDHC1 SDCK, I2S SDO, PCC DATA[5], or GMAC GMDIO.
31	PA22	bidirectional	High-sink-capable I/O pin PA22 (VDDIO group, I2C capable) that can also be used as EXTINT[6], PTC X16/Y16, SERCOM3 PAD[0], SERCOM5 PAD[1], TC4/TCC0/TCC1 WO, CAN0 TX, I2S SDI, PCC DATA[6], or CCL IN[6].
32	PA23	bidirectional	High-sink-capable I/O pin PA23 (VDDIO group, I2C capable) that can also be used as EXTINT[7], PTC X17/Y17, SERCOM3 PAD[1], SERCOM5 PAD[0], TC4/TCC0/TCC1 WO, USB SOF_1KHZ, CAN0 RX, I2S FS[1], PCC DATA[7], or CCL IN[7].
33	PA24	bidirectional	General-purpose I/O pin PA24 that can also be used as EXTINT[8], SERCOM3/SERCOM5 PAD[2], TC5 WO[0], TCC2 WO[2], PDEC PDEC[0], USB DM, CAN0 TX, or CCL IN[8].
34	PA25	bidirectional	General-purpose I/O pin PA25 that can also be used as EXTINT[9], SERCOM3/SERCOM5 PAD[3], TC5 WO[1], PDEC PDEC[1], USB DP, CAN0 RX, or CCL OUT[2].
35	GND	power_in	Digital ground pin.
36	VDDIO	power_in	Digital I/O supply for the GPIO pin cluster; device operating range is 1.71 V to 3.63 V.
37	PB22	bidirectional	General-purpose I/O pin PB22 that can also be used as XIN of crystal oscillator XOSC1, EXTINT[6], SERCOM1/SERCOM5 PAD[2], TC7 WO[0], PDEC PDEC[2], USB SOF_1KHZ, GCLK IO[0], or CCL IN[0].
38	PB23	bidirectional	General-purpose I/O pin PB23 that can also be used as XOUT of crystal oscillator XOSC1, EXTINT[7], SERCOM1/SERCOM5 PAD[3], TC7 WO[1], PDEC PDEC[0], GCLK IO[1], or CCL OUT[0].
39	PA27	bidirectional	General-purpose I/O pin PA27 that can also be used as EXTINT[11], PTC X18/Y18, or GCLK IO[1].
40	RESETN	input	External active-low reset input for the device.
41	VDDCORE	power_in	Core supply pin for the device; the provided text does not give its limits or whether it is regulator-driven.
42	GND	power_in	Digital ground pin.
43	VSW	passive	Regulator switching pin of the embedded Buck/LDO regulator; the provided text does not give its electrical limits.
44	VDDIO	power_in	Digital I/O supply for the GPIO pin cluster; device operating range is 1.71 V to 3.63 V.
45	PA30	bidirectional	General-purpose I/O pin PA30 that is the SWCLK serial-wire debug clock pin by default; it can also be used as EXTINT[14], PTC X19/Y19, SERCOM1/SERCOM7 PAD[2], TC6/TCC2 WO[0], GCLK IO[0], or CCL IN[3].
46	PA31	bidirectional	General-purpose I/O pin PA31 that is the SWDIO serial-wire debug data pin; it can also be used as EXTINT[15], SERCOM1/SERCOM7 PAD[3], TC6/TCC2 WO[1], or CCL OUT[1].
47	PB02	bidirectional	General-purpose I/O pin PB02 that can also be used as EXTINT[2], ADC0 AIN[14], PTC X20/Y20, SERCOM5 PAD[0], TC6/TCC2 WO, CCL OUT[0], and is an RTC tamper input (IN1) and SUPC output (OUT1).
48	PB03	bidirectional	General-purpose I/O pin PB03 that can also be used as EXTINT[3], ADC0 AIN[15], PTC X21/Y21, SERCOM5 PAD[1], or TC6 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	Embedded Processors & Controllers
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 VDD (VDDIO and VDDANA)	VDD	1.71		3.63	V	Same voltage applied to VDDIO and VDDANA	46
I/O B supply voltage	VDDIOB	1.71		3.63	V	Must be equal to or lower than VDDIO	46
Battery backup supply voltage	VBAT	1.71		3.63	V	Supplies the Automatic Power Switch	46
Operating frequency (DC to fmax)				120	MHz	1.71V to 3.63V, -40°C to +85°C, DC to 120 MHz	1
Operating temperature range (grade U, industrial)		-40		85	°C	Ordering grade U: -40°C to +85°C Matte Sn (Industrial)	19
Internal regulator output voltage VDDCORE	VDDCORE		1.2		V	Internal voltage regulator output in linear mode	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: ATSAME51G19A-MU
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: atsame51g19a-mu-etched.step / atsame51g19a-mu-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atsame51g19a-mu.step / atsame51g19a-mu.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-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

# ATSAME51G19A-MU

**Microchip Tech** · Pre-ordered MCUs · QFN-48-EP(7x7)

ATSAME51G19A-MU 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 pin PA00 (VDDIO group) that can also be used as EXTINT[0], SERCOM1 PAD[0], TC2 WO[0], or XIN32 of the 32 kHz crystal oscillator (XOSC32K). |
| 2 | PA01 | bidirectional | General-purpose I/O pin PA01 that can also be used as EXTINT[1], SERCOM1 PAD[1], TC2 WO[1], or XOUT32 of the 32 kHz crystal oscillator (XOSC32K). |
| 3 | PA02 | bidirectional | General-purpose I/O pin PA02 that can also be used as EXTINT[2], ADC0 AIN[0], DAC VOUT[0], or RTC tamper input IN2. |
| 4 | PA03 | bidirectional | General-purpose I/O pin PA03 that can also be used as EXTINT[3], ADC0 AIN[1], ANAREF VREFA, or PTC X0/Y0. |
| 5 | GNDANA | power_in | Analog ground pin for the analog peripherals (ADC, DAC, AC, PTC). |
| 6 | VDDANA | power_in | Analog supply pin for the analog peripherals; device operating range is 1.71 V to 3.63 V. |
| 7 | PB08 | bidirectional | General-purpose I/O pin PB08 that can also be used as EXTINT[8], ADC0 AIN[2], ADC1 AIN[0], PTC X1/Y1, SERCOM4 PAD[0], TC4 WO[0], or CCL IN[8]. |
| 8 | PB09 | bidirectional | General-purpose I/O pin PB09 that can also be used as EXTINT[9], ADC0 AIN[3], ADC1 AIN[1], PTC X2/Y2, SERCOM4 PAD[1], TC4 WO[1], or CCL OUT[2]. |
| 9 | PA04 | bidirectional | General-purpose I/O pin PA04 that can also be used as EXTINT[4], ANAREF VREFB, ADC0 AIN[4], AC AIN[0], PTC X3/Y3, SERCOM0 PAD[0], TC0 WO[0], or CCL IN[0]. |
| 10 | PA05 | bidirectional | General-purpose I/O pin PA05 that can also be used as EXTINT[5], ADC0 AIN[5], AC AIN[1], DAC VOUT[1], SERCOM0 PAD[1], TC0 WO[1], or CCL IN[1]. |
| 11 | PA06 | bidirectional | General-purpose I/O pin PA06 that can also be used as EXTINT[6], ANAREF VREFC, ADC0 AIN[6], AC AIN[2], PTC X4/Y4, SERCOM0 PAD[2], TC1 WO[0], SDHC0 SDCD, or CCL IN[2]. |
| 12 | PA07 | bidirectional | General-purpose I/O pin PA07 that can also be used as EXTINT[7], ADC0 AIN[7], AC AIN[3], PTC X5/Y5, SERCOM0 PAD[3], TC1 WO[1], SDHC0 SDWP, or CCL OUT[0]. |
| 13 | PA08 | bidirectional | High-sink I/O pin PA08 (VDDIOB group, I2C capable) that can also be used as NMI, ADC0 AIN[8], ADC1 AIN[2], PTC X6/Y6, SERCOM0 PAD[0], SERCOM2 PAD[1], TCC0/TCC1 WO, QSPI DATA[0], SDHC0 SDCMD, I2S MCK[0], or CCL IN[3]. |
| 14 | PA09 | bidirectional | High-sink-capable I/O pin PA09 (VDDIOB group, I2C capable) that can also be used as EXTINT[9], ADC0 AIN[9], ADC1 AIN[3], PTC X7/Y7, SERCOM0 PAD[1], SERCOM2 PAD[0], TC0/TCC0/TCC1 WO, QSPI DATA[1], SDHC0 SDDAT[0], I2S FS[0], or CCL IN[4]. |
| 15 | PA10 | bidirectional | General-purpose I/O pin PA10 that can also be used as EXTINT[10], ADC0 AIN[10], PTC X8/Y8, SERCOM0 PAD[2], SERCOM2 PAD[2], TC1/TCC0/TCC1 WO, QSPI DATA[2], SDHC0 SDDAT[1], I2S SCK[0], GCLK IO[4], or CCL IN[5]. |
| 16 | PA11 | bidirectional | General-purpose I/O pin PA11 that can also be used as EXTINT[11], ADC0 AIN[11], PTC X9/Y9, SERCOM0 PAD[3], SERCOM2 PAD[3], TC1/TCC0/TCC1 WO, QSPI DATA[3], SDHC0 SDDAT[2], I2S SDO, GCLK IO[5], or CCL OUT[1]. |
| 17 | VDDIO | power_in | Digital I/O supply for the GPIO pin cluster; device operating range is 1.71 V to 3.63 V. |
| 18 | GND | power_in | Digital ground pin. |
| 19 | PB10 | bidirectional | General-purpose I/O pin PB10 that can also be used as EXTINT[10], SERCOM4 PAD[2], TC5/TCC0/TCC1 WO, QSPI SCK, SDHC0 SDDAT[3], I2S SDI, GCLK IO[4], or CCL IN[11]. |
| 20 | PB11 | bidirectional | General-purpose I/O pin PB11 that can also be used as EXTINT[11], SERCOM4 PAD[3], TC5/TCC0/TCC1 WO, QSPI CS, SDHC0 SDCK, I2S FS[1], GCLK IO[5], or CCL OUT[1]. |
| 21 | PA12 | bidirectional | High-sink-capable I/O pin PA12 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text. |
| 22 | PA13 | bidirectional | High-sink-capable I/O pin PA13 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text. |
| 23 | PA14 | bidirectional | General-purpose I/O pin PA14, which is the XIN pin of crystal oscillator XOSC0 when that oscillator is used. |
| 24 | PA15 | bidirectional | General-purpose I/O pin PA15, which is the XOUT pin of crystal oscillator XOSC0 when that oscillator is used. |
| 25 | PA16 | bidirectional | High-sink-capable I/O pin PA16 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text. |
| 26 | PA17 | bidirectional | High-sink-capable I/O pin PA17 (VDDIO group, I2C capable); its full multiplexing list is on a page not included in the provided text. |
| 27 | PA18 | bidirectional | General-purpose I/O pin PA18; its multiplexing list is on a page not included in the provided text. |
| 28 | PA19 | bidirectional | General-purpose I/O pin PA19; its multiplexing list is on a page not included in the provided text. |
| 29 | PA20 | bidirectional | General-purpose I/O pin PA20 that can also be used as EXTINT[4], PTC X14/Y14, SERCOM5/SERCOM3 PAD[2], TC7/TCC0/TCC1 WO, SDHC1 SDCMD, I2S FS[0], PCC DATA[4], or GMAC GMDC. |
| 30 | PA21 | bidirectional | General-purpose I/O pin PA21 that can also be used as EXTINT[5], PTC X15/Y15, SERCOM5/SERCOM3 PAD[3], TC7/TCC0/TCC1 WO, SDHC1 SDCK, I2S SDO, PCC DATA[5], or GMAC GMDIO. |
| 31 | PA22 | bidirectional | High-sink-capable I/O pin PA22 (VDDIO group, I2C capable) that can also be used as EXTINT[6], PTC X16/Y16, SERCOM3 PAD[0], SERCOM5 PAD[1], TC4/TCC0/TCC1 WO, CAN0 TX, I2S SDI, PCC DATA[6], or CCL IN[6]. |
| 32 | PA23 | bidirectional | High-sink-capable I/O pin PA23 (VDDIO group, I2C capable) that can also be used as EXTINT[7], PTC X17/Y17, SERCOM3 PAD[1], SERCOM5 PAD[0], TC4/TCC0/TCC1 WO, USB SOF_1KHZ, CAN0 RX, I2S FS[1], PCC DATA[7], or CCL IN[7]. |
| 33 | PA24 | bidirectional | General-purpose I/O pin PA24 that can also be used as EXTINT[8], SERCOM3/SERCOM5 PAD[2], TC5 WO[0], TCC2 WO[2], PDEC PDEC[0], USB DM, CAN0 TX, or CCL IN[8]. |
| 34 | PA25 | bidirectional | General-purpose I/O pin PA25 that can also be used as EXTINT[9], SERCOM3/SERCOM5 PAD[3], TC5 WO[1], PDEC PDEC[1], USB DP, CAN0 RX, or CCL OUT[2]. |
| 35 | GND | power_in | Digital ground pin. |
| 36 | VDDIO | power_in | Digital I/O supply for the GPIO pin cluster; device operating range is 1.71 V to 3.63 V. |
| 37 | PB22 | bidirectional | General-purpose I/O pin PB22 that can also be used as XIN of crystal oscillator XOSC1, EXTINT[6], SERCOM1/SERCOM5 PAD[2], TC7 WO[0], PDEC PDEC[2], USB SOF_1KHZ, GCLK IO[0], or CCL IN[0]. |
| 38 | PB23 | bidirectional | General-purpose I/O pin PB23 that can also be used as XOUT of crystal oscillator XOSC1, EXTINT[7], SERCOM1/SERCOM5 PAD[3], TC7 WO[1], PDEC PDEC[0], GCLK IO[1], or CCL OUT[0]. |
| 39 | PA27 | bidirectional | General-purpose I/O pin PA27 that can also be used as EXTINT[11], PTC X18/Y18, or GCLK IO[1]. |
| 40 | RESETN | input | External active-low reset input for the device. |
| 41 | VDDCORE | power_in | Core supply pin for the device; the provided text does not give its limits or whether it is regulator-driven. |
| 42 | GND | power_in | Digital ground pin. |
| 43 | VSW | passive | Regulator switching pin of the embedded Buck/LDO regulator; the provided text does not give its electrical limits. |
| 44 | VDDIO | power_in | Digital I/O supply for the GPIO pin cluster; device operating range is 1.71 V to 3.63 V. |
| 45 | PA30 | bidirectional | General-purpose I/O pin PA30 that is the SWCLK serial-wire debug clock pin by default; it can also be used as EXTINT[14], PTC X19/Y19, SERCOM1/SERCOM7 PAD[2], TC6/TCC2 WO[0], GCLK IO[0], or CCL IN[3]. |
| 46 | PA31 | bidirectional | General-purpose I/O pin PA31 that is the SWDIO serial-wire debug data pin; it can also be used as EXTINT[15], SERCOM1/SERCOM7 PAD[3], TC6/TCC2 WO[1], or CCL OUT[1]. |
| 47 | PB02 | bidirectional | General-purpose I/O pin PB02 that can also be used as EXTINT[2], ADC0 AIN[14], PTC X20/Y20, SERCOM5 PAD[0], TC6/TCC2 WO, CCL OUT[0], and is an RTC tamper input (IN1) and SUPC output (OUT1). |
| 48 | PB03 | bidirectional | General-purpose I/O pin PB03 that can also be used as EXTINT[3], ADC0 AIN[15], PTC X21/Y21, SERCOM5 PAD[1], or TC6 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 | Embedded Processors & Controllers |
| 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 VDD (VDDIO and VDDANA) | VDD | 1.71 |  | 3.63 | V | Same voltage applied to VDDIO and VDDANA | 46 |
| I/O B supply voltage | VDDIOB | 1.71 |  | 3.63 | V | Must be equal to or lower than VDDIO | 46 |
| Battery backup supply voltage | VBAT | 1.71 |  | 3.63 | V | Supplies the Automatic Power Switch | 46 |
| Operating frequency (DC to fmax) |  |  |  | 120 | MHz | 1.71V to 3.63V, -40°C to +85°C, DC to 120 MHz | 1 |
| Operating temperature range (grade U, industrial) |  | -40 |  | 85 | °C | Ordering grade U: -40°C to +85°C Matte Sn (Industrial) | 19 |
| Internal regulator output voltage VDDCORE | VDDCORE |  | 1.2 |  | V | Internal voltage regulator output in linear mode | 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: `ATSAME51G19A-MU`
- 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: `atsame51g19a-mu-etched.step` / `atsame51g19a-mu-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `atsame51g19a-mu.step` / `atsame51g19a-mu.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Microchip Tech datasheet](docs/atsame51g19a-mu-datasheet.pdf) (1934 pp, sha256 `6f02ccc3e69325ab`, retrieved 2026-10-31, 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](docs/atsame51g19a-mu-datasheet.pdf)

ATSAME51G19A-MU

Verified ATSAME51G19A-MU

Verification log 1 record

ATSAME51G19A-MU

Pinout

Key specifications

Electrical characteristics

Materials and finish

CAD (KiCad official)

Provenance