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ATMEGA324A-AUR

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentsingle chip microcomputer-microcontrolleratmega324a-aurfactory-2.0.0extractor-text

Verified ATMEGA324A-AUR

by Ray · last 13 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

13 Nov 2026RayPublished by the parts factory: tier mfr, 44 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • •array (skip): not an array of element pairs
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATMEGA324A-AUR · TQFP-44(10x10) · 44 pins
  • ✓copper: 44 copper pads, none touching another net
  • ✓datasheet: all 44 pin names found in the 672-page datasheet
  • ✓distributor: lcsc C2052785, digikey ATMEGA324A-AURTR-ND, mouser 556-ATMEGA324A-AUR
  • ✓family: TQFP-44_10x10mm_P0.8mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-abgbx5p9/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.653)
  • ✓pads: 44 pins = 44 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 44 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 56 kB, viewers/symbol.html 30 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atmega324a-aur.kicad_sym✓ atmega324a-aur.kicad_mod✓ atmega324a-aur.step
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ATMEGA324A-AUR

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-44(10x10)

ATMEGA324A-AUR from Microchip Tech, in a TQFP-44(10x10). 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 PB5 bidirectional Port B bit 5 bi-directional I/O with internal pull-up; alternate functions MOSI, ICP3, PCINT13.
2 PB6 bidirectional Port B bit 6 bi-directional I/O with internal pull-up; alternate functions MISO, OC3A, PCINT14.
3 PB7 bidirectional Port B bit 7 bi-directional I/O with internal pull-up; alternate functions SCK, OC3B, PCINT15.
4 RESET input Reset input; a low level longer than the minimum pulse length generates a reset even if the clock is not running.
5 VCC power_in Digital supply voltage (1.8 - 5.5V operating range).
6 GND power_in Ground.
7 XTAL2 output Output from the inverting oscillator amplifier.
8 XTAL1 input Input to the inverting oscillator amplifier and input to the internal clock operating circuit.
9 PD0 bidirectional Port D bit 0 bi-directional I/O with internal pull-up; alternate functions RXD0, PCINT24 (T3 only on ATmega1284/1284P).
10 PD1 bidirectional Port D bit 1 bi-directional I/O with internal pull-up; alternate functions TXD0, PCINT25.
11 PD2 bidirectional Port D bit 2 bi-directional I/O with internal pull-up; alternate functions RXD1, INT0, PCINT26.
12 PD3 bidirectional Port D bit 3 bi-directional I/O with internal pull-up; alternate functions TXD1, INT1, PCINT27.
13 PD4 bidirectional Port D bit 4 bi-directional I/O with internal pull-up; alternate functions XCK1, OC1B, PCINT28.
14 PD5 bidirectional Port D bit 5 bi-directional I/O with internal pull-up; alternate functions OC1A, PCINT29.
15 PD6 bidirectional Port D bit 6 bi-directional I/O with internal pull-up; alternate functions OC2B, ICP1, PCINT30.
16 PD7 bidirectional Port D bit 7 bi-directional I/O with internal pull-up; alternate functions OC2A, PCINT31.
17 VCC power_in Digital supply voltage (1.8 - 5.5V operating range).
18 GND power_in Ground.
19 PC0 bidirectional Port C bit 0 bi-directional I/O with internal pull-up; alternate functions SCL (TWI), PCINT16.
20 PC1 bidirectional Port C bit 1 bi-directional I/O with internal pull-up; alternate functions SDA (TWI), PCINT17.
21 PC2 bidirectional Port C bit 2 bi-directional I/O with internal pull-up; alternate functions TCK (JTAG), PCINT18.
22 PC3 bidirectional Port C bit 3 bi-directional I/O with internal pull-up; alternate functions TMS (JTAG), PCINT19.
23 PC4 bidirectional Port C bit 4 bi-directional I/O with internal pull-up; alternate functions TDO (JTAG), PCINT20.
24 PC5 bidirectional Port C bit 5 bi-directional I/O with internal pull-up; alternate functions TDI (JTAG), PCINT21.
25 PC6 bidirectional Port C bit 6 bi-directional I/O with internal pull-up; alternate functions TOSC1 (Timer/Counter2 oscillator), PCINT22.
26 PC7 bidirectional Port C bit 7 bi-directional I/O with internal pull-up; alternate functions TOSC2 (Timer/Counter2 oscillator), PCINT23.
27 AVCC power_in Supply voltage pin for Port A and the ADC; must be connected to VCC even if the ADC is unused, through a low-pass filter if the ADC is used.
28 GND power_in Ground.
29 AREF input Analog reference pin for the analog-to-digital converter.
30 PA7 bidirectional Port A bit 7 bi-directional I/O with internal pull-up; ADC7 analog input, PCINT7.
31 PA6 bidirectional Port A bit 6 bi-directional I/O with internal pull-up; ADC6 analog input, PCINT6.
32 PA5 bidirectional Port A bit 5 bi-directional I/O with internal pull-up; ADC5 analog input, PCINT5.
33 PA4 bidirectional Port A bit 4 bi-directional I/O with internal pull-up; ADC4 analog input, PCINT4.
34 PA3 bidirectional Port A bit 3 bi-directional I/O with internal pull-up; ADC3 analog input, PCINT3.
35 PA2 bidirectional Port A bit 2 bi-directional I/O with internal pull-up; ADC2 analog input, PCINT2.
36 PA1 bidirectional Port A bit 1 bi-directional I/O with internal pull-up; ADC1 analog input, PCINT1.
37 PA0 bidirectional Port A bit 0 bi-directional I/O with internal pull-up; ADC0 analog input, PCINT0.
38 VCC power_in Digital supply voltage (1.8 - 5.5V operating range).
39 GND power_in Ground.
40 PB0 bidirectional Port B bit 0 bi-directional I/O with internal pull-up; alternate functions XCK0, T0, PCINT8.
41 PB1 bidirectional Port B bit 1 bi-directional I/O with internal pull-up; alternate functions T1, CLKO, PCINT9.
42 PB2 bidirectional Port B bit 2 bi-directional I/O with internal pull-up; alternate functions AIN0, INT2, PCINT10.
43 PB3 bidirectional Port B bit 3 bi-directional I/O with internal pull-up; alternate functions AIN1, OC0A, PCINT11.
44 PB4 bidirectional Port B bit 4 bi-directional I/O with internal pull-up; alternate functions SS, OC0B, PCINT12.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-44(10x10)
Category Single Chip Microcomputer/Microcontroller
Pins 44

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Output High Voltage (IOH = -20mA, VCC = 5V) VOH 4.2 V IOH = -20mA, VCC = 5V 326
Output High Voltage (IOH = -10mA, VCC = 3V) VOH 2.3 V IOH = -10mA, VCC = 3V 326
Output Low Voltage (IOL = 20mA, VCC = 5V) VOL 0.9 V IOL = 20mA, VCC = 5V 326
Output Low Voltage (IOL = 10mA, VCC = 3V) VOL 0.6 V IOL = 10mA, VCC = 3V 326
Input Leakage Current I/O Pin, pin low IIL 1 µA VCC = 5.5V, pin low (absolute value) 326
Input Leakage Current I/O Pin, pin high IIH 1 µA VCC = 5.5V, pin high (absolute value) 326
Reset Pull-up Resistor RRST 30 60 kΩ 326
I/O Pin Pull-up Resistor RPU 20 50 kΩ 326
Analog Comparator Input Offset Voltage VACIO 40 mV VCC = 5V, Vin = VCC/2 326
Analog Comparator Input Offset Voltage VACIO 60 mV VCC < 3.6V, Vin < 0.5V 327
Analog Comparator Input Offset Voltage VACIO 500 mV VCC > 3.6V, Vin < 0.5V 327
Analog Comparator Input Leakage Current IACLK -50 50 nA VCC = 5V, Vin = VCC/2 327
Analog Comparator Propagation Delay (VCC = 2.7V) tACID 750 ns VCC = 2.7V 327
Analog Comparator Propagation Delay (VCC = 4.0V) tACID 500 ns VCC = 4.0V 327
Power Supply Current, Active ICC 0.3 0.55 mA Active 1MHz, VCC = 2V 329
Power Supply Current, Active ICC 1.5 3.5 mA Active 4MHz, VCC = 3V 329
Power Supply Current, Active ICC 5.2 12 mA Active 8MHz, VCC = 5V 329
Power Supply Current, Idle ICC 0.06 0.5 mA Idle 1MHz, VCC = 2V 329
Power Supply Current, Idle ICC 0.35 1.5 mA Idle 4MHz, VCC = 3V 329
Power Supply Current, Idle ICC 1.3 5.5 mA Idle 8MHz, VCC = 5V 329
Power Supply Current, Power-save mode ICC 0.5 µA 32kHz TOSC enabled, VCC = 1.8V 329
Power Supply Current, Power-save mode ICC 0.6 µA 32kHz TOSC enabled, VCC = 3V 329
Power Supply Current, Power-down mode ICC 4.2 15 µA WDT enabled, VCC = 3V 329
Power Supply Current, Power-down mode ICC 0.15 3 µA WDT disabled, VCC = 3V 329
Operating Supply Voltage VCC 1.8 5.5 V TA = -40C to 85C 326
Operating Ambient Temperature (industrial) TA -40 85 °C Industrial operational range 326
Operating Temperature -55 125 °C 326
Storage Temperature -65 150 °C 326
Voltage on RESET with respect to ground -0.5 13 V 326
DC current per I/O pin 40 mA 326

CAD (KiCad official)

  • Symbol: ATMEGA324A-AUR
  • Footprint: Package_QFP:TQFP-44_10x10mm_P0.8mm
  • 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
  • 3D model files: atmega324a-aur-etched.step / atmega324a-aur-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atmega324a-aur.step / atmega324a-aur.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (672 pp, sha256 b5ee49362803dc70, retrieved 2026-11-13, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-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