component
ATTINY88-MUR
Public Made by Adomby adom
Microchip Tech ATMEL & AVR, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "attiny88-mur",
"title": "ATTINY88-MUR",
"brief": "Microchip Tech ATMEL & AVR, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"embedded processors & controllers",
"attiny88-mur",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATTINY88-MUR",
"manufacturer": "Microchip Tech",
"package": "QFN-32-EP(5x5)",
"pin_count": 33,
"category": "Embedded Processors & Controllers",
"subcategory": "ATMEL & AVR",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/2de19331d45b463d91079422b8f91310.pdf",
"parts": {
"symbol": "attiny88-mur.kicad_sym",
"footprint": "attiny88-mur.kicad_mod",
"model_3d": "attiny88-mur-hero.glb",
"model_3d_plain": "attiny88-mur-etched.glb",
"model_3d_step": "attiny88-mur-etched.step",
"model_3d_step_plain": "attiny88-mur.step",
"lbr": "attiny88-mur.lbr"
},
"distributor_links": {
"lcsc": "C219105",
"digikey": "ATTINY88-MURTR-ND",
"mouser": "556-ATTINY88-MUR"
},
"distributor_check": {
"checked_at": "2026-10-30T15:50:24Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "ATTINY88-MURTR-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "556-ATTINY88-MUR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "PD3",
"type": "bidirectional",
"description": "Port D bit 3 with INT1 external interrupt source and PCINT19; PD[3:0] output buffers have high sink capability."
},
{
"number": "2",
"name": "PD4",
"type": "bidirectional",
"description": "Port D bit 4 with T0 Timer/Counter0 external counter input and PCINT20; PD[7:4] output buffers have symmetrical sink and source drive."
},
{
"number": "3",
"name": "PA2",
"type": "bidirectional",
"description": "Port A bit 2 with PCINT26 pin change interrupt source; Port A is available only in 32-lead packages and is tri-stated when reset is active."
},
{
"number": "4",
"name": "VCC",
"type": "power_in",
"description": "Digital supply voltage."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "PA3",
"type": "bidirectional",
"description": "Port A bit 3 with PCINT27 pin change interrupt source; Port A is a 4-bit bidirectional I/O port with selectable internal pull-ups."
},
{
"number": "7",
"name": "PB6",
"type": "bidirectional",
"description": "Port B bit 6 that serves as CLKI external clock input (when used as clock pin it cannot be used as I/O) and PCINT6 pin change interrupt source."
},
{
"number": "8",
"name": "PB7",
"type": "bidirectional",
"description": "Port B bit 7 with PCINT7 pin change interrupt source; Port B is an 8-bit bidirectional I/O port with selectable internal pull-ups."
},
{
"number": "9",
"name": "PD5",
"type": "bidirectional",
"description": "Port D bit 5 with T1 Timer/Counter1 external counter input and PCINT21 pin change interrupt source."
},
{
"number": "10",
"name": "PD6",
"type": "bidirectional",
"description": "Port D bit 6 with AIN0 analog comparator positive input (configure as input with pull-up off) and PCINT22 pin change interrupt source."
},
{
"number": "11",
"name": "PD7",
"type": "bidirectional",
"description": "Port D bit 7 with AIN1 analog comparator negative input (configure as input with pull-up off) and PCINT23 pin change interrupt source."
},
{
"number": "12",
"name": "PB0",
"type": "bidirectional",
"description": "Port B bit 0 with ICP1 Timer/Counter1 input capture pin, CLKO divided system clock output when the CKOUT fuse is programmed, and PCINT0 pin change interrupt source."
},
{
"number": "13",
"name": "PB1",
"type": "bidirectional",
"description": "Port B bit 1 with OC1A Timer/Counter1 compare match A output, which requires the pin to be configured as an output, and PCINT1 pin change interrupt source."
},
{
"number": "14",
"name": "PB2",
"type": "bidirectional",
"description": "Port B bit 2 with SS SPI slave select input, OC1B Timer/Counter1 compare match B output (requires output configuration), and PCINT2 pin change interrupt source."
},
{
"number": "15",
"name": "PB3",
"type": "bidirectional",
"description": "Port B bit 3 with MOSI SPI master output / slave input and PCINT3 pin change interrupt source."
},
{
"number": "16",
"name": "PB4",
"type": "bidirectional",
"description": "Port B bit 4 with MISO SPI master input / slave output and PCINT4 pin change interrupt source."
},
{
"number": "17",
"name": "PB5",
"type": "bidirectional",
"description": "Port B bit 5 with SCK SPI master clock output / slave clock input and PCINT5 pin change interrupt source; this pin takes its supply from VCC."
},
{
"number": "18",
"name": "AVCC",
"type": "power_in",
"description": "Supply voltage pin for the A/D converter and PC7, PC[5:0] and PA[1:0]; it should be connected to VCC even if the ADC is not used, and through a low-pass filter if the ADC is used."
},
{
"number": "19",
"name": "PA0",
"type": "bidirectional",
"description": "Port A bit 0 with ADC6 ADC input channel 6 and PCINT24 pin change interrupt source; in 32-lead packages PA0 takes its supply from AVCC."
},
{
"number": "20",
"name": "PC7",
"type": "bidirectional",
"description": "Port C bit 7 with PCINT15 pin change interrupt source; this pin takes its supply from AVCC."
},
{
"number": "21",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "22",
"name": "PA1",
"type": "bidirectional",
"description": "Port A bit 1 with ADC7 ADC input channel 7 and PCINT25 pin change interrupt source; in 32-lead packages PA1 takes its supply from AVCC."
},
{
"number": "23",
"name": "PC0",
"type": "bidirectional",
"description": "Port C bit 0 with ADC0 ADC input channel 0 (uses analog power) and PCINT8 pin change interrupt source."
},
{
"number": "24",
"name": "PC1",
"type": "bidirectional",
"description": "Port C bit 1 with ADC1 ADC input channel 1 (uses analog power) and PCINT9 pin change interrupt source."
},
{
"number": "25",
"name": "PC2",
"type": "bidirectional",
"description": "Port C bit 2 with ADC2 ADC input channel 2 (uses analog power) and PCINT10 pin change interrupt source."
},
{
"number": "26",
"name": "PC3",
"type": "bidirectional",
"description": "Port C bit 3 with ADC3 ADC input channel 3 (uses analog power) and PCINT11 pin change interrupt source."
},
{
"number": "27",
"name": "PC4",
"type": "bidirectional",
"description": "Port C bit 4 with SDA 2-wire serial data I/O (open-drain with spike filter when TWEN is set), ADC4 input channel 4 (uses digital power) and PCINT12 pin change interrupt source."
},
{
"number": "28",
"name": "PC5",
"type": "bidirectional",
"description": "Port C bit 5 with SCL 2-wire serial clock I/O (open-drain with spike filter when TWEN is set), ADC5 input channel 5 (uses digital power) and PCINT13 pin change interrupt source."
},
{
"number": "29",
"name": "PC6",
"type": "bidirectional",
"description": "PC6/RESET: a low level longer than the minimum pulse width generates a reset when the RSTDISBL fuse is unprogrammed, otherwise it is an I/O pin; it also provides PCINT14 and its electrical characteristics differ from the other Port C pins."
},
{
"number": "30",
"name": "PD0",
"type": "bidirectional",
"description": "Port D bit 0 with PCINT16 pin change interrupt source; PD[3:0] output buffers have high sink capability."
},
{
"number": "31",
"name": "PD1",
"type": "bidirectional",
"description": "Port D bit 1 with PCINT17 pin change interrupt source; PD[3:0] output buffers have high sink capability."
},
{
"number": "32",
"name": "PD2",
"type": "bidirectional",
"description": "Port D bit 2 with INT0 external interrupt source 0 and PCINT18 pin change interrupt source; PD[3:0] output buffers have high sink capability."
},
{
"number": "33",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The 32 QFN top-view text in the extracted datasheet is column-scrambled, so the pin-to-number mappin; The exposed bottom pad (thermal/ground pad) has no pin number in the datasheet text; the datasheet o; PC6 is listed as bidirectional because it is a port pin when RSTDISBL is programmed; when used as RE",
"exposed pad 33 added from the footprint",
"15/33 pins cited to the wrong page (name found elsewhere): ['8:PB7@p69', '16:PB4@p69', '17:PB5@p69', '19:PA0@p68']"
],
"pages_sent": 70,
"cost_usd": 0.2444,
"at": "2026-10-30T15:49:34"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/2de19331d45b463d91079422b8f91310.pdf",
"pages": 302,
"sha256": "c4c6c01b2bda5d04",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "attiny88-mur.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "5fa713ea46b36980895812ed853577889b7cb06d275041a39b99bc0be305dc79",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "attiny88-mur-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
5,
5,
0.875
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "0d58cbcce7e3c84d97fd07b44b02f0069cdfe49379b34f2b8687e5d6d3354c8b",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "32M1-A",
"source_page": 289,
"D": {
"nom_mm": 5,
"range_mm": [
4.9,
5.1
]
},
"E1": {
"nom_mm": 5,
"range_mm": [
4.9,
5.1
]
},
"e": {
"nom_mm": 0.5,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 0.9,
"range_mm": [
0.8,
1
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "attiny88-mur.step",
"verdict": "PASS",
"reasons": [
"height within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
},
"metadata": {
"specs": {
"Manufacturer": "Microchip Tech",
"Package": "QFN-32-EP(5x5)",
"Category": "Embedded Processors & Controllers",
"Pins": "33"
},
"appearance": {
"contacts": {
"quote": "– H: NiPdAu lead finish – U: matte tin",
"page": 283,
"doc": "ds.pdf",
"plating": "tin"
},
"version": 1,
"datasheet_sha256": "c4c6c01b2bda5d047694236d8ebcb59dd940317226d30eec27f15b3e0316b06f"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "c4c6c01b2bda5d047694236d8ebcb59dd940317226d30eec27f15b3e0316b06f",
"rows": [
{
"name": "Operating Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -55,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Storage Temperature",
"symbol": "",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Voltage on any pin except RESET with respect to Ground",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.5,
"typ": null,
"max": null,
"conditions": "Upper limit printed as VCC+0.5V",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Voltage on RESET with respect to Ground",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.5,
"typ": null,
"max": 13,
"conditions": "",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Maximum Operating Voltage",
"symbol": "",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 6,
"conditions": "",
"source_page": 206,
"source": "datasheet"
},
{
"name": "DC Current per I/O Pin",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 206,
"source": "datasheet"
},
{
"name": "DC Current VCC and GND Pins",
"symbol": "",
"kind": "absolute_maximum",
"unit": "mA",
"min": null,
"typ": null,
"max": 200,
"conditions": "",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Supply voltage VCC (operating)",
"symbol": "VCC",
"kind": "recommended_operating",
"unit": "V",
"min": 1.8,
"typ": null,
"max": 5.5,
"conditions": "TA = -40°C to +85°C",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Operating temperature (industrial range)",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 85,
"conditions": "",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Speed grade maximum frequency",
"symbol": "",
"kind": "recommended_operating",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 4,
"conditions": "VCC = 1.8 – 5.5V",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Speed grade maximum frequency",
"symbol": "",
"kind": "recommended_operating",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 8,
"conditions": "VCC = 2.7 – 5.5V",
"source_page": 1,
"source": "datasheet"
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{
"name": "Speed grade maximum frequency",
"symbol": "",
"kind": "recommended_operating",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 12,
"conditions": "VCC = 4.5 – 5.5V",
"source_page": 1,
"source": "datasheet"
},
{
"name": "Oscillator Frequency",
"symbol": "1/tCLCL",
"kind": "timing",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 2,
"conditions": "VCC = 1.8-5.5V",
"source_page": 209,
"source": "datasheet"
},
{
"name": "Oscillator Frequency",
"symbol": "1/tCLCL",
"kind": "timing",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 6,
"conditions": "VCC = 2.7-5.5V",
"source_page": 209,
"source": "datasheet"
},
{
"name": "Oscillator Frequency",
"symbol": "1/tCLCL",
"kind": "timing",
"unit": "MHz",
"min": 0,
"typ": null,
"max": 12,
"conditions": "VCC = 4.5-5.5V",
"source_page": 209,
"source": "datasheet"
},
{
"name": "Input Low Voltage, Except RESET pin",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": -0.5,
"typ": null,
"max": null,
"conditions": "VCC = 1.8V – 2.4V; max printed as 0.2VCC",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Input Low Voltage, RESET pin as reset",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": -0.5,
"typ": null,
"max": null,
"conditions": "VCC = 1.8V – 5.5V; max printed as 0.2VCC",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Output Low Voltage (except high sink I/O pins and RESET as I/O)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.7,
"conditions": "IOL = 10 mA, VCC = 5V",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Output Low Voltage (except high sink I/O pins and RESET as I/O)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "IOL = 5 mA, VCC = 3V",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Output Low Voltage (except high sink I/O pins and RESET as I/O)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.4,
"conditions": "IOL = 2 mA, VCC = 1.8V",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Output Low Voltage (high sink I/O pins PD0-PD3)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.7,
"conditions": "IOL = 20 mA, VCC = 5V",
"source_page": 206,
"source": "datasheet"
},
{
"name": "Output Low Voltage (high sink I/O pins PD0-PD3)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "IOL = 10 mA, VCC = 3V",
"source_page": 206,
"source": "datasheet"
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