component
ATTINY1634-SU
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "ATTINY1634-SU",
"brief": "Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
"mpn": "ATTINY1634-SU",
"manufacturer": "Microchip Tech",
"package": "SOIC-20-300mil",
"pin_count": 20,
"category": "Single Chip Microcomputer/Microcontroller",
"subcategory": "Microcontroller Units (MCUs/MPUs/SOCs)",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/adfad32847abf774d6e0e69f5410b4d5.pdf",
"parts": {
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"lbr": "attiny1634-su.lbr"
},
"distributor_links": {
"lcsc": "C220787",
"digikey": "ATTINY1634-SU-ND",
"mouser": "556-ATTINY1634-SU"
},
"distributor_check": {
"checked_at": "2026-10-27T00:59:22Z",
"source": "Component Ocean /api/assign-pns",
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},
"pins": [
{
"number": "1",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT8, TXD0, ADC5."
},
{
"number": "2",
"name": "PA7",
"type": "bidirectional",
"description": "Port A bit 7, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT7, RXD0, ADC4."
},
{
"number": "3",
"name": "PA6",
"type": "bidirectional",
"description": "Port A bit 6, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions PCINT6, OC1B, ADC3."
},
{
"number": "4",
"name": "PA5",
"type": "bidirectional",
"description": "Port A bit 5, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions PCINT5, OC0B, ADC2."
},
{
"number": "5",
"name": "PA4",
"type": "bidirectional",
"description": "Port A bit 4, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT4, T0, ADC1."
},
{
"number": "6",
"name": "PA3",
"type": "bidirectional",
"description": "Port A bit 3, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT3, T1, SNS, ADC0."
},
{
"number": "7",
"name": "PA2",
"type": "bidirectional",
"description": "Port A bit 2, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT2, AIN1."
},
{
"number": "8",
"name": "PA1",
"type": "bidirectional",
"description": "Port A bit 1, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT1, AIN0."
},
{
"number": "9",
"name": "PA0",
"type": "bidirectional",
"description": "Port A bit 0, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions PCINT0, AREF."
},
{
"number": "10",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "11",
"name": "VCC",
"type": "power_in",
"description": "Supply voltage."
},
{
"number": "12",
"name": "PC5",
"type": "bidirectional",
"description": "Port C bit 5, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions XTAL1 (input to the inverting oscillator amplifier and internal clock circuit), CLKI, PCINT17."
},
{
"number": "13",
"name": "PC4",
"type": "bidirectional",
"description": "Port C bit 4, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions XTAL2 (output from the inverting oscillator amplifier), PCINT16."
},
{
"number": "14",
"name": "PC3",
"type": "bidirectional",
"description": "Port C bit 3 / RESET: a low level longer than the minimum pulse length generates a reset even if the clock is not running, and the pin can also be used as a weak I/O pin; also dW, PCINT15."
},
{
"number": "15",
"name": "PC2",
"type": "bidirectional",
"description": "Port C bit 2, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC11, CLKO, INT0, PCINT14."
},
{
"number": "16",
"name": "PC1",
"type": "bidirectional",
"description": "Port C bit 1, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC10, ICP1, SCL, USCK, XCK1, PCINT13."
},
{
"number": "17",
"name": "PC0",
"type": "bidirectional",
"description": "Port C bit 0, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions ADC9, OC0A, XCK0, PCINT12."
},
{
"number": "18",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3, bidirectional I/O with selectable pull-up and asymmetrical drive (high sink, standard source); alternate functions ADC8, OC1A, PCINT11."
},
{
"number": "19",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC7, DO, TXD1, PCINT10."
},
{
"number": "20",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1, bidirectional I/O with selectable pull-up and symmetrical drive; alternate functions ADC6, DI, SDA, RXD1, PCINT9."
}
],
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"guards": "pin_guards 0.1: passed",
"guard_notes": [
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],
"pages_sent": 44,
"cost_usd": 0.3526,
"at": "2026-10-27T00:58:47"
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"name": "Operating Temperature (industrial)",
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"name": "Input Low Voltage",
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"name": "Input Low Voltage",
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{
"name": "Input Low Voltage, RESET Pin as Reset",
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"source_page": 228,
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{
"name": "Input High-voltage, except RESET pin",
"symbol": "VIH",
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"unit": "VCC",
"min": 0.7,
"typ": null,
"max": null,
"conditions": "VCC = 1.8 - 2.4V; min as multiple of VCC; max is VCC+0.5V",
"source_page": 228,
"source": "datasheet"
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{
"name": "Input High-voltage, except RESET pin",
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"source": "datasheet"
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{
"name": "Input High-voltage, RESET pin as Reset",
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{
"name": "Output Low Voltage",
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"conditions": "Standard I/O: IOL = 10 mA, VCC = 5V; High-sink I/O: IOL = 20 mA, VCC = 5V",
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"source": "datasheet"
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{
"name": "Output Low Voltage",
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{
"name": "Output High-voltage",
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"source": "datasheet"
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{
"name": "Output High-voltage",
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{
"name": "Input Leakage Current I/O Pin (low)",
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"source": "datasheet"
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{
"name": "Input Leakage Current I/O Pin (high)",
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"min": null,
"typ": 0.05,
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"conditions": "Vcc = 5.5V, pin high (absolute value); typ printed <0.05",
"source_page": 228,
"source": "datasheet"
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{
"name": "Pull-up Resistor, I/O Pin",
"symbol": "RPU",
"kind": "electrical",
"unit": "kΩ",
"min": 20,
"typ": null,
"max": 50,
"conditions": "VCC = 5.5V, input low",
"source_page": 228,
"source": "datasheet"
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{
"name": "Pull-up Resistor, Reset Pin",
"symbol": "RPU",
"kind": "electrical",
"unit": "kΩ",
"min": 30,
"typ": null,
"max": 60,
"conditions": "VCC = 5.5V, input low",
"source_page": 228,
"source": "datasheet"
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"name": "Supply Current, Active Mode",
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"typ": 0.23,
"max": 0.4,
"conditions": "f = 1MHz, VCC = 2V",
"source_page": 229,
"source": "datasheet"
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{
"name": "Supply Current, Active Mode",
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"max": 1.7,
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"source_page": 229,
"source": "datasheet"
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{
"name": "Supply Current, Active Mode",
"symbol": "ICC",
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"unit": "mA",
"min": null,
"typ": 4.3,
"max": 6,
"conditions": "f = 8MHz, VCC = 5V",
"source_page": 229,
"source": "datasheet"
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{
"name": "Supply Current, Idle Mode",
"symbol": "ICC",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.04,
"max": 0.1,
"conditions": "f = 1MHz, VCC = 2V",
"source_page": 229,
"source": "datasheet"
},
{
"name": "Supply Current, Idle Mode",
"symbol": "ICC",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 0.26,
"max": 0.4,
"conditions": "f = 4MHz, VCC = 3V",
"source_page": 229,
"source": "datasheet"
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{
"name": "Supply Current, Idle Mode",
"symbol": "ICC",
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"min": null,
"typ": 1.1,
"max": 1.7,
"conditions": "f = 8MHz, VCC = 5V",
"source_page": 229,
"source": "datasheet"
},
{
"name": "Supply Current, Power-Down Mode",
"symbol": "ICC",
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"min": null,
"typ": 1.7,
"max": 4,
"conditions": "WDT enabled, VCC = 3V",
"source_page": 229,
"source": "datasheet"
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{
"name": "Supply Current, Power-Down Mode",
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"typ": 0.1,
"max": 2,
"conditions": "WDT disabled, VCC = 3V",
"source_page": 229,
"source": "datasheet"
},
{
"name": "Factory-calibrated 8MHz oscillator accuracy",
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"min": -10,
"typ": null,
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"conditions": "Factory calibration, 8.0MHz, VCC 2.7 - 4V, 25C to +85C",
"source_page": 230,
"source": "datasheet"
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{
"name": "User-calibrated 8MHz oscillator accuracy",
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"source": "datasheet"
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{
"name": "Factory-calibrated 32kHz oscillator accuracy",
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{
"name": "Clock Frequency",
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"conditions": "VCC = 1.8 - 5.5V",
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{
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