component
ATSAMD21E18A-AU
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"description": "Port A general-purpose I/O on the VDDANA analog domain, with EXTINT[0] and the XIN32 32kHz crystal input multiplexed onto it."
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{
"number": "4",
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"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDANA analog domain, with EXTINT[3], ADC/DAC VREFA and analog input AIN[1] multiplexed onto it."
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"description": "Port A general-purpose I/O on the VDDANA analog domain, with EXTINT[4], ADC VREFB and analog input AIN[4] multiplexed onto it."
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{
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"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDANA analog domain, with EXTINT[6] and analog input AIN[6] multiplexed onto it."
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{
"number": "8",
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"type": "bidirectional",
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"number": "10",
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"description": "Ground reference pin for the device."
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{
"number": "11",
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"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with NMI and analog input AIN[16] multiplexed onto it."
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{
"number": "12",
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"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[9] and analog input AIN[17] multiplexed onto it."
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{
"number": "13",
"name": "PA10",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[10] and analog input AIN[18] multiplexed onto it."
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{
"number": "14",
"name": "PA11",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[11] and analog input AIN[19] multiplexed onto it."
},
{
"number": "15",
"name": "PA14",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[14] and the XIN crystal input multiplexed onto it."
},
{
"number": "16",
"name": "PA15",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[15] and the XOUT crystal output multiplexed onto it."
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{
"number": "17",
"name": "PA16",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[0] multiplexed onto it."
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{
"number": "18",
"name": "PA17",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[1] multiplexed onto it."
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{
"number": "19",
"name": "PA18",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[2] multiplexed onto it."
},
{
"number": "20",
"name": "PA19",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[3] multiplexed onto it."
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{
"number": "21",
"name": "PA22",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[6] multiplexed onto it."
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{
"number": "22",
"name": "PA23",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[7] and the USB SOF 1kHz output multiplexed onto it."
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{
"number": "23",
"name": "PA24",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain with USB DM multiplexed onto it; a pull-up is recommended if unconnected."
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{
"number": "24",
"name": "PA25",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain with USB DP multiplexed onto it; a pull-up is recommended if unconnected."
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{
"number": "25",
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"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[15] multiplexed onto it."
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"number": "26",
"name": "RESET",
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"description": "Active-low external reset input."
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{
"number": "27",
"name": "PA28",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[8] multiplexed onto it."
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{
"number": "28",
"name": "GND",
"type": "power_in",
"description": "Ground reference pin for the device."
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{
"number": "29",
"name": "VDDCORE",
"type": "power_out",
"description": "Regulated output of the internal voltage regulator supplying the core logic."
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"number": "30",
"name": "VDDIN",
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"description": "Input supply pin for the device and internal voltage regulator."
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{
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"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[10] and the SWCLK debug clock multiplexed onto it."
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{
"number": "32",
"name": "PA31",
"type": "bidirectional",
"description": "Port A general-purpose I/O on the VDDIO domain, with EXTINT[11] and the SWDIO debug data multiplexed onto it, activated only with a debugger present."
}
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"contacts": {
"quote": "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.",
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