component
AVR128DA28-I
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "AVR128DA28-I",
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"manufacturer": "Microchip Tech",
"package": "SOIC-28-300mil",
"pin_count": 28,
"category": "Embedded Processors & Controllers",
"subcategory": "Pre-ordered MCUs",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6ecfb11014d9bf6fd8b1ed63e0a75bf8.pdf",
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"source": "Component Ocean /api/assign-pns",
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{
"number": "1",
"name": "PA7",
"type": "bidirectional",
"description": "General-purpose I/O pin PA7 with alternate functions including CLKOUT clock output, USART0 XDIR, SPI0 SS, and TCD0 WOD."
},
{
"number": "2",
"name": "PC0",
"type": "bidirectional",
"description": "General-purpose I/O pin PC0 with alternate functions including USART1 TxD, SPI1 MOSI, TCA0 WO0 and CCL LUT1 input IN0."
},
{
"number": "3",
"name": "PC1",
"type": "bidirectional",
"description": "General-purpose I/O pin PC1 with alternate functions including USART1 RxD, SPI1 MISO, TCA0 WO1 and CCL LUT1 input IN1."
},
{
"number": "4",
"name": "PC2",
"type": "bidirectional",
"description": "General-purpose I/O pin PC2 with alternate functions including USART1 XCK, SPI1 SCK, master TWI SDA, and EVSYS output EVOUTC."
},
{
"number": "5",
"name": "PC3",
"type": "bidirectional",
"description": "General-purpose I/O pin PC3 with alternate functions including USART1 XDIR, SPI1 SS, master TWI SCL, and TCA0 WO3."
},
{
"number": "6",
"name": "PD0",
"type": "bidirectional",
"description": "General-purpose I/O pin PD0 that is also ADC0 analog input AIN0, with PTC X16/Y16 and an analog comparator negative input option."
},
{
"number": "7",
"name": "PD1",
"type": "bidirectional",
"description": "General-purpose I/O pin PD1 that is also ADC0 analog input AIN1, and can serve as the ZCD0 zero-cross input (ZCIN)."
},
{
"number": "8",
"name": "PD2",
"type": "bidirectional",
"description": "General-purpose I/O pin PD2 that is also ADC0 analog input AIN2, with analog comparator positive input option and EVSYS output EVOUTD."
},
{
"number": "9",
"name": "PD3",
"type": "bidirectional",
"description": "General-purpose I/O pin PD3 that is also ADC0 analog input AIN3, with analog comparator input options and CCL LUT2 output."
},
{
"number": "10",
"name": "PD4",
"type": "bidirectional",
"description": "General-purpose I/O pin PD4 that is also ADC0 analog input AIN4, with analog comparator positive input option and PTC X20/Y20."
},
{
"number": "11",
"name": "PD5",
"type": "bidirectional",
"description": "General-purpose I/O pin PD5 that is also ADC0 analog input AIN5, with PTC X21/Y21 and analog comparator negative input option."
},
{
"number": "12",
"name": "PD6",
"type": "bidirectional",
"description": "General-purpose I/O pin PD6 that is also ADC0 analog input AIN6 and the DAC0 voltage output VOUT."
},
{
"number": "13",
"name": "PD7",
"type": "bidirectional",
"description": "General-purpose I/O pin PD7 that is also ADC0 analog input AIN7 and the external voltage reference input VREFA."
},
{
"number": "14",
"name": "AVDD",
"type": "power_in",
"description": "Analog supply pin; AVDD and VDD are internally connected and there are no separate power domains on the AVR DA family."
},
{
"number": "15",
"name": "GND",
"type": "power_in",
"description": "Ground pin, which must be connected to the same ground as the other GND pins."
},
{
"number": "16",
"name": "PF0 (XTAL32K1)",
"type": "bidirectional",
"description": "General-purpose I/O pin PF0 that is also the 32 kHz crystal oscillator pin XTAL32K1 and ADC0 positive input-only AIN16."
},
{
"number": "17",
"name": "PF1 (XTAL32K2)",
"type": "bidirectional",
"description": "General-purpose I/O pin PF1 that is also the 32 kHz crystal oscillator pin XTAL32K2 and ADC0 positive input-only AIN17."
},
{
"number": "18",
"name": "PF6 (RESET)",
"type": "input",
"description": "Input-only pin PF6 that becomes the active-low external RESET input when the RSTPINCFG fuse selects RESET, otherwise it is a general input."
},
{
"number": "19",
"name": "UPDI",
"type": "bidirectional",
"description": "Dedicated Unified Program and Debug Interface pin used for one-wire UART programming and debugging, with no other function."
},
{
"number": "20",
"name": "VDD",
"type": "power_in",
"description": "Digital supply pin for 1.8-5.5 V operation; all VDD pins are internally connected and must be at the same voltage."
},
{
"number": "21",
"name": "GND",
"type": "power_in",
"description": "Ground pin for the digital supply, which must be connected to the same ground as the other GND pins."
},
{
"number": "22",
"name": "PA0 (EXTCLK)",
"type": "bidirectional",
"description": "General-purpose I/O pin PA0 that can serve as the external clock input EXTCLK, with alternate functions including USART0 TxD and TCA0 WO0."
},
{
"number": "23",
"name": "PA1",
"type": "bidirectional",
"description": "General-purpose I/O pin PA1 with alternate functions including USART0 RxD, TCA0 WO1, and CCL LUT0 input IN1."
},
{
"number": "24",
"name": "PA2",
"type": "bidirectional",
"description": "General-purpose I/O pin PA2 with alternate functions including USART0 XCK, master TWI SDA, TCA0 WO2, and EVSYS output EVOUTA."
},
{
"number": "25",
"name": "PA3",
"type": "bidirectional",
"description": "General-purpose I/O pin PA3 with alternate functions including USART0 XDIR, master TWI SCL, TCA1 WO3, and CCL LUT0 output."
},
{
"number": "26",
"name": "PA4",
"type": "bidirectional",
"description": "General-purpose I/O pin PA4 with alternate functions including USART0 TxD, SPI0 MOSI, TCA0 WO4 and TCB0 WOA."
},
{
"number": "27",
"name": "PA5",
"type": "bidirectional",
"description": "General-purpose I/O pin PA5 with alternate functions including USART0 RxD, SPI0 MISO, TCA0 WO5 and TCB0 WOB."
},
{
"number": "28",
"name": "PA6",
"type": "bidirectional",
"description": "General-purpose I/O pin PA6 with alternate functions including USART0 XCK, SPI0 SCK, TCB0 WOC and CCL output."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
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"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The I/O multiplexing and reset sections describe UPDI as a 'Digital input' (page 110), but the UPDI ; PF6 is input-only per note 5 on page 19, and it becomes RESET only when the RSTPINCFG fuse is set to; Alternate-function lists are condensed from the multiplexing table (page 18-19), which the text extr"
],
"pages_sent": 106,
"cost_usd": 0.3629,
"at": "2026-10-30T22:04:06"
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"metadata": {
"specs": {
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"Package": "SOIC-28-300mil",
"Category": "Embedded Processors & Controllers",
"Pins": "28"
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"characteristics": {
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{
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