component

ATTINY461A-MU

Public Made by Adom

by adom

Microchip Tech Pre-ordered MCUs, QFN-32-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersattiny461a-mufactory-2.0.0extractor-text

Verified ATTINY461A-MU

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier lcsc, 33 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATTINY461A-MU · QFN-32-EP(5x5) · 33 pins
  • ✓copper: 33 copper pads, none touching another net
  • ✓datasheet: all 33 pin names found in the 296-page datasheet
  • ✓distributor: lcsc C614253, digikey ATTINY461A-MU-ND, mouser 556-ATTINY461A-MU
  • ✓family: QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-d1xnfkla/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): the datasheet dimensions give no height or body size to compare (datasheet p.281)
  • ✓pads: 33 pins = 33 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 33 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ attiny461a-mu.kicad_sym✓ attiny461a-mu.kicad_mod✓ attiny461a-mu.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 5d ago
viewers attiny461a-mu: viewers · Ray 5d ago
attiny461a-mu-etched.glb Publish 0.1.0 · Ray 5d ago
attiny461a-mu-etched.step attiny461a-mu: factory component page (tier=lcsc) · Ray 5d ago
attiny461a-mu-hero.glb attiny461a-mu: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
attiny461a-mu-hero.overlay.json Publish 0.1.0 · Ray 5d ago
attiny461a-mu.glb Publish 0.1.0 · Ray 5d ago
attiny461a-mu.kicad_mod Publish 0.1.0 · Ray 5d ago
attiny461a-mu.kicad_sym Publish 0.1.0 · Ray 5d ago
attiny461a-mu.lbr Publish 0.1.0 · Ray 5d ago
attiny461a-mu.step Publish 0.1.0 · Ray 5d ago
package.json Publish 0.1.0 · Ray 5d ago
page.json Set visibility: public · Ray 5d ago
README.md Publish 0.1.0 · Ray 5d ago
verification.json Verified: Published by the parts factory: tier lcsc, 33 pins · Ray 5d ago

ATTINY461A-MU

Microchip Tech · Pre-ordered MCUs · QFN-32-EP(5x5)

ATTINY461A-MU from Microchip Tech, in a QFN-32-EP(5x5). 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 NC unconnected No connect.
2 PB3 bidirectional Port B bit 3 with internal pull-up; alternate functions OC1B (Timer/Counter1 Compare Match B output) and PCINT11.
3 NC unconnected No connect.
4 VCC power_in Supply voltage (1.8 - 5.5V operating range).
5 GND power_in Ground.
6 NC unconnected No connect.
7 PB4 bidirectional Port B bit 4 with internal pull-up; alternate functions ADC7, OC1D (inverted), CLKI/XTAL1 (clock or crystal oscillator input) and PCINT12.
8 PB5 bidirectional Port B bit 5 with internal pull-up; alternate functions ADC8, OC1D, CLKO/XTAL2 (crystal oscillator output, divided system clock output) and PCINT13.
9 NC unconnected No connect.
10 PB6 bidirectional Port B bit 6 with internal pull-up; alternate functions ADC9, INT0 external interrupt, T0 Timer/Counter0 clock source and PCINT14.
11 PB7 bidirectional Port B bit 7; RESET input (low level longer than minimum pulse length generates a reset) or weak I/O if reset disabled, also debugWIRE I/O, ADC10 and PCINT15.
12 NC unconnected No connect.
13 PA7 bidirectional Port A bit 7 with internal pull-up; alternate functions ADC6, AIN1 and PCINT7.
14 PA6 bidirectional Port A bit 6 with internal pull-up; alternate functions ADC5, AIN0 and PCINT6.
15 PA5 bidirectional Port A bit 5 with internal pull-up; alternate functions ADC4, AIN2 and PCINT5.
16 NC unconnected No connect.
17 PA4 bidirectional Port A bit 4 with internal pull-up; alternate functions ADC3, ICP0 and PCINT4.
18 AVCC power_in Analog supply for the ADC, analog comparator, BOD, internal voltage reference and Port A; must be connected to VCC (through a low-pass filter if the ADC is used).
19 NC unconnected No connect.
20 NC unconnected No connect.
21 AGND power_in Analog ground.
22 PA3 bidirectional Port A bit 3 with internal pull-up; alternate functions AREF (ADC reference) and PCINT3.
23 PA2 bidirectional Port A bit 2 with internal pull-up; alternate functions ADC2, INT1, USCK/SCL (USI clock, with USIPOS set) and PCINT2.
24 NC unconnected No connect.
25 PA1 bidirectional Port A bit 1 with internal pull-up; alternate functions ADC1, DO (USI data output, with USIPOS set) and PCINT1.
26 PA0 bidirectional Port A bit 0 with internal pull-up; alternate functions ADC0, DI/SDA (USI data, with USIPOS set) and PCINT0.
27 NC unconnected No connect.
28 NC unconnected No connect.
29 NC unconnected No connect.
30 PB0 bidirectional Port B bit 0 with internal pull-up; alternate functions MOSI/DI/SDA (USI data input), OC1A and PCINT8.
31 PB1 bidirectional Port B bit 1 with internal pull-up; alternate functions MISO/DO (USI data output), OC1A and PCINT9.
32 PB2 bidirectional Port B bit 2 with internal pull-up; alternate functions SCK/USCK/SCL (USI clock), OC1B (inverted) and PCINT10.
33 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package QFN-32-EP(5x5)
Category Embedded Processors & Controllers
Pins 33

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Voltage VCC 1.8 5.5 V 1
Operating Temperature (DC characteristics) TA -40 85 °C Industrial range 185
Clock Frequency 1.8-5.5V 1/tCLCL 0 4 MHz VCC = 1.8 - 5.5V 188
Clock Frequency 2.7-5.5V 1/tCLCL 0 10 MHz VCC = 2.7 - 5.5V 188
Clock Frequency 4.5-5.5V 1/tCLCL 0 20 MHz VCC = 4.5 - 5.5V 188
Operating Temperature (absolute max) -55 125 °C 185
Storage Temperature -65 150 °C 185
Voltage on any Pin except RESET -0.5 V with respect to Ground; max VCC +0.5V 185
Voltage on RESET -0.5 13 V with respect to Ground 185
Maximum Operating Voltage 6 V 185
DC Current per I/O Pin 40 mA 185
DC Current VCC and GND Pins 200 mA 185
Input Low-voltage, except XTAL1 and RESET VIL -0.5 V Except XTAL1 and RESET pins; max 0.2VCC 185
Input Low-voltage, XTAL1 VIL -0.5 V XTAL1 pin, External Clock Selected; max 0.1VCC 185
Input Low-voltage, RESET VIL -0.5 V RESET pin; max 0.2VCC 185
Output Low Voltage 5V VOL 0.6 V IOL = 10 mA, VCC = 5V 185
Output Low Voltage 3V VOL 0.5 V IOL = 5 mA, VCC = 3V 185
Output Low Voltage 1.8V VOL 0.4 V IOL = 2 mA, VCC = 1.8V 185
Output Low Voltage RESET as I/O 5V VOL 0.6 V RESET pin as I/O, IOL = 2 mA, VCC = 5V 185
Output Low Voltage RESET as I/O 3V VOL 0.5 V RESET pin as I/O, IOL = 1 mA, VCC = 3V 185
Output Low Voltage RESET as I/O 1.8V VOL 0.4 V RESET pin as I/O, IOL = 0.4 mA, VCC = 1.8V 185
Output High Voltage 5V VOH 4.3 V IOH = -10 mA, VCC = 5V 185
Output High Voltage 3V VOH 2.5 V IOH = -5 mA, VCC = 3V 185
Output High Voltage 1.8V VOH 1.4 V IOH = -2 mA, VCC = 1.8V 185
Input Leakage Current, pin low IIL 0.05 1 µA VCC = 5.5V, pin low (absolute value); typ printed as <0.05 185
Input Leakage Current, pin high IIH 0.05 1 µA VCC = 5.5V, pin high (absolute value); typ printed as <0.05 186
Reset Pull-up Resistor RRST 30 60 kΩ 186
I/O Pin Pull-up Resistor RPU 20 50 kΩ 186
Supply Current Active 1MHz ICC 0.2 0.5 mA Active 1MHz, VCC = 2V 186
Supply Current Active 4MHz ICC 1.2 2 mA Active 4MHz, VCC = 3V 186
Supply Current Active 8MHz ICC 3.6 7 mA Active 8MHz, VCC = 5V 186
Supply Current Idle 1MHz ICC 0.04 0.15 mA Idle 1MHz, VCC = 2V 186
Supply Current Idle 4MHz ICC 0.25 0.4 mA Idle 4MHz, VCC = 3V 186
Supply Current Idle 8MHz ICC 0.9 1.5 mA Idle 8MHz, VCC = 5V 186
Power-down Current WDT enabled ICC 4 10 µA WDT enabled, VCC = 3V 186
Power-down Current WDT disabled ICC 0.15 2 µA WDT disabled, VCC = 3V 186
Internal Oscillator Factory Calibration Accuracy -10 8 10 % 8.0 MHz, 3V, 25°C (typ is MHz target) 187
Internal Bandgap Voltage VBG 1 1.1 1.2 V VCC = 2.7V, TA = 25°C 188
Power-on Reset Release Threshold VPOR 1.1 1.4 1.6 V TA = -40 to +85°C 189
Power-on Reset Activation Threshold VPOA 0.6 1.3 1.6 V TA = -40 to +85°C 189
Brown-out Threshold BODLEVEL 110 VBOT 1.7 1.8 2 V BODLEVEL[2:0] = 110 189
Brown-out Threshold BODLEVEL 101 VBOT 2.5 2.7 2.9 V BODLEVEL[2:0] = 101 189
Brown-out Threshold BODLEVEL 100 VBOT 4.1 4.3 4.5 V BODLEVEL[2:0] = 100 189
ADC Internal 1.1V Reference VINT 1 1.1 1.2 V 190
ADC Internal 2.56V Reference VINT 2.3 2.56 2.8 V VCC > 3.0V 190
ADC External Reference Voltage AREF 2 V Single ended; max AVCC 190
ADC Clock Frequency, single ended 50 1000 kHz 190
ADC Absolute Accuracy, single ended 2 LSB VREF = 4V, VCC = 4V, ADC clock = 200 kHz 190
Analog Comparator Input Offset Voltage VAIO 10 40 mV VCC = 5V, VIN = VCC / 2 193
Analog Comparator Input Leakage Current ILAC -50 50 nA VCC = 5V, VIN = VCC / 2 193

CAD (KiCad official)

  • Symbol: ATTINY461A-MU
  • Footprint: Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.3x3.3mm
  • 3D model: QFN-32-EP(5x5) (KiCad packages3D, STEP)
  • 3D model files: attiny461a-mu-etched.step / attiny461a-mu-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny461a-mu.step / attiny461a-mu.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (296 pp, sha256 b805ae111d6b33c0, retrieved 2026-10-30, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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