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ATXMEGA32A4-AU

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

componentembedded processors & controllersatxmega32a4-aufactory-2.0.0extractor-text

Verified ATXMEGA32A4-AU

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 44 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATXMEGA32A4-AU · TQFP-44(10x10) · 44 pins
  • ✓copper: 44 copper pads, none touching another net
  • ✓datasheet: all 44 pin names found in the 108-page datasheet
  • ✓distributor: lcsc C1337691, digikey ATXMEGA32A4-AU-ND, mouser 556-ATXMEGA32A4-AU
  • ✓family: TQFP-44_10x10mm_P0.8mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-hf77kcos/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 44 pins = 44 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 44 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atxmega32a4-au.kicad_sym✓ atxmega32a4-au.kicad_mod✓ atxmega32a4-au.step
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ATXMEGA32A4-AU

Microchip Tech · Pre-ordered MCUs · TQFP-44(10x10)

ATXMEGA32A4-AU 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 PA5 bidirectional Port A bit 5 I/O with synchronous pin-change interrupt; alternate functions are ADC5 and AC5 analog inputs.
2 PA6 bidirectional Port A bit 6 I/O with synchronous pin-change interrupt; alternate functions are ADC6 and AC6 analog inputs.
3 PA7 bidirectional Port A bit 7 I/O with synchronous pin-change interrupt; alternate functions are ADC7 input and the AC0 output (AC0OUT).
4 PB0 bidirectional Port B bit 0 I/O with synchronous pin-change interrupt; alternate functions are ADC8 input and the AREF reference input.
5 PB1 bidirectional Port B bit 1 I/O with synchronous pin-change interrupt; alternate function is ADC9 analog input.
6 PB2 bidirectional Port B bit 2 I/O with synchronous/asynchronous pin-change interrupt; alternate functions are ADC10 input and DAC0 output.
7 PB3 bidirectional Port B bit 3 I/O with synchronous pin-change interrupt; alternate functions are ADC11 input and DAC1 output.
8 GND power_in Ground pin; the datasheet's absolute maximum DC current rating for the VCC and GND pins is 200.0 mA.
9 VCC power_in Digital supply voltage; the device operating range is 1.6 - 3.6 V with a maximum operating voltage of 3.6 V.
10 PC0 bidirectional Port C bit 0 I/O with synchronous pin-change interrupt; alternate functions are TCC0 OC0A, AWEXC OC0ALS and TWIC SDA.
11 PC1 bidirectional Port C bit 1 I/O with synchronous pin-change interrupt; alternate functions are TCC0 OC0B, AWEXC OC0AHS, USARTC0 XCK0 and TWIC SCL.
12 PC2 bidirectional Port C bit 2 I/O with synchronous/asynchronous pin-change interrupt; alternate functions are TCC0 OC0C, AWEXC OC0BLS and USARTC0 RXD0.
13 PC3 bidirectional Port C bit 3 I/O with synchronous pin-change interrupt; alternate functions are TCC0 OC0D, AWEXC OC0BHS and USARTC0 TXD0.
14 PC4 bidirectional Port C bit 4 I/O with synchronous pin-change interrupt; alternate functions are AWEXC OC0CLS, TCC1 OC1A and SPI SS.
15 PC5 bidirectional Port C bit 5 I/O with synchronous pin-change interrupt; alternate functions are AWEXC OC0CHS, TCC1 OC1B, USARTC1 XCK1 and SPI MOSI.
16 PC6 bidirectional Port C bit 6 I/O with synchronous pin-change interrupt; alternate functions are AWEXC OC0DLS, USARTC1 RXD1 and SPI MISO.
17 PC7 bidirectional Port C bit 7 I/O with synchronous pin-change interrupt; alternate functions are AWEXC OC0DHS, USARTC1 TXD1, SPI SCK, CLKOUT and EVENTOUT.
18 GND power_in Ground pin; the datasheet's absolute maximum DC current rating for the VCC and GND pins is 200.0 mA.
19 VCC power_in Digital supply voltage; the device operating range is 1.6 - 3.6 V with a maximum operating voltage of 3.6 V.
20 PD0 bidirectional Port D bit 0 I/O with synchronous pin-change interrupt; alternate function is TCD0 OC0A.
21 PD1 bidirectional Port D bit 1 I/O with synchronous pin-change interrupt; alternate functions are TCD0 OC0B and USARTD0 XCK0.
22 PD2 bidirectional Port D bit 2 I/O with synchronous/asynchronous pin-change interrupt; alternate functions are TCD0 OC0C and USARTD0 RXD0.
23 PD3 bidirectional Port D bit 3 I/O with synchronous pin-change interrupt; alternate functions are TCD0 OC0D and USARTD0 TXD0.
24 PD4 bidirectional Port D bit 4 I/O with synchronous pin-change interrupt; alternate functions are TCD1 OC1A and SPID SS.
25 PD5 bidirectional Port D bit 5 I/O with synchronous pin-change interrupt; alternate functions are TCD1 OC1B, USARTD1 XCK1 and SPID MOSI.
26 PD6 bidirectional Port D bit 6 I/O with synchronous pin-change interrupt; alternate functions are USARTD1 RXD1 and SPID MISO.
27 PD7 bidirectional Port D bit 7 I/O with synchronous pin-change interrupt; alternate functions are USARTD1 TXD1, SPID SCK, CLKOUT and EVENTOUT.
28 PE0 bidirectional Port E bit 0 I/O with synchronous pin-change interrupt; alternate functions are TCE0 OC0A and TWIE SDA.
29 PE1 bidirectional Port E bit 1 I/O with synchronous pin-change interrupt; alternate functions are TCE0 OC0B, USARTE0 XCK0 and TWIE SCL.
30 GND power_in Ground pin; the datasheet's absolute maximum DC current rating for the VCC and GND pins is 200.0 mA.
31 VCC power_in Digital supply voltage; the device operating range is 1.6 - 3.6 V with a maximum operating voltage of 3.6 V.
32 PE2 bidirectional Port E bit 2 I/O with synchronous/asynchronous pin-change interrupt; alternate functions are TCE0 OC0C and USARTE0 RXD0.
33 PE3 bidirectional Port E bit 3 I/O with synchronous pin-change interrupt; alternate functions are TCE0 OC0D and USARTE0 TXD0.
34 PDI bidirectional PDI_DATA pin of the 2-pin Atmel Program and Debug Interface, used for programming Flash, EEPROM, fuses and lock bits and for debugging.
35 RESET input Reset pin, which also serves as PDI_CLK for the Program and Debug Interface.
36 PR0 bidirectional Port R bit 0 with alternate functions XTAL2 (inverting oscillator pin) and TOSC2 (timer oscillator pin).
37 PR1 bidirectional Port R bit 1 with alternate functions XTAL1 (inverting oscillator pin) and TOSC1 (timer oscillator pin).
38 GND power_in Ground pin; the datasheet's absolute maximum DC current rating for the VCC and GND pins is 200.0 mA.
39 AVCC power_in Analog supply voltage pin; the device operating voltage range is 1.6 - 3.6 V.
40 PA0 bidirectional Port A bit 0 I/O with synchronous pin-change interrupt; alternate functions are ADC0 input, AC0 input and the AREF reference input.
41 PA1 bidirectional Port A bit 1 I/O with synchronous pin-change interrupt; alternate functions are ADC1 and AC1 analog inputs.
42 PA2 bidirectional Port A bit 2 I/O with synchronous/asynchronous pin-change interrupt; alternate functions are ADC2 and AC2 analog inputs.
43 PA3 bidirectional Port A bit 3 I/O with synchronous pin-change interrupt; alternate functions are ADC3 and AC3 analog inputs.
44 PA4 bidirectional Port A bit 4 I/O with synchronous pin-change interrupt; alternate functions are ADC4 and AC4 analog inputs.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-44(10x10)
Category Embedded Processors & Controllers
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
Power-save supply current, RTC 1 kHz from 32 kHz TOSC ICC 0.5 4 µA Power-save, RTC 1 kHz from Low Power 32 kHz TOSC, T = 25°C, VCC = 1.8V 62
Power-save supply current, RTC 1 kHz from 32 kHz TOSC ICC 0.7 4 µA Power-save, RTC 1 kHz from Low Power 32 kHz TOSC, T = 25°C, VCC = 3.0V 62
CPU clock frequency ClkCPU 0 12 MHz VCC = 1.6V 63
CPU clock frequency ClkCPU 0 32 MHz VCC = 2.7V 63
ADC integral non-linearity INL -5 2 5 LSB 500 ksps 65
ADC differential non-linearity DNL -1 1 500 ksps 65
ADC gain error -10 10 mV 65
ADC offset error -2 2 mV 65
ADC clock frequency ADCclk 2000 kHz Max is 1/4 of Peripheral Clock 65
ADC reference voltage VREF 1 V 65
ADC reference input resistance RAREF 10 M 65
ADC gain stage gain error -1 1 % 1 to 64 gain 65
ADC gain stage offset error -1 1 mV 65
DAC integral non-linearity INL -5 5 LSB VCC = 1.6-3.6V VREF = Ext. ref 66
DAC differential non-linearity DNL -1 1 LSB VCC = 1.6-3.6V VREF = Ext. ref 66
DAC minimum output voltage 0.03 V Rload = 100k 66
DAC external reference voltage AREF 1.1 V 66
DAC offset factory calibration accuracy -0.5 0.5 LSB Continues mode, VCC = 3.0V, VREF = Int 1.00V, T = 85°C 66
Analog comparator input offset voltage Voff -10 10 mV VCC = 1.6 - 3.6V 66
Analog comparator input leakage current Ilk 1000 pA VCC = 1.6 - 3.6V 66
Bandgap voltage, ADC/DAC reference 0.99 1 1.01 V T = 85°C, After calibration 66
Bandgap variation over voltage and temperature -2 2 % VCC = 1.6 - 3.6V, TA = -40C to 85C 66
Output low voltage GPIO VOL 0.4 0.76 V IOH = 15 mA, VCC = 3.3V 67
Output low voltage GPIO VOL 0.3 0.64 V IOH = 10 mA, VCC = 3.0V 67
Output low voltage GPIO VOL 0.2 0.46 V IOH = 5 mA, VCC = 1.8V 67
Output high voltage GPIO VOH 2.6 3 V IOH = -8 mA, VCC = 3.3V 67
Output high voltage GPIO VOH 2.1 2.7 V IOH = -6 mA, VCC = 3.0V 67
Output high voltage GPIO VOH 1.4 1.6 V IOH = -2 mA, VCC = 1.8V 67
Input leakage current, I/O pin (low) IIL 1 µA I/O pin 67
Input leakage current, I/O pin (high) IIH 1 µA I/O pin 67
Input low voltage VIL -0.5 V VCC = 2.4 - 3.6V 67
Power-on reset threshold voltage falling VPOT- 0.4 0.8 V VCC falls faster than 1V/ms 68
Power-on reset threshold voltage falling VPOT- 0.8 1.3 V VCC falls at 1V/ms or slower 68
Power-on reset threshold voltage rising VPOT+ 1.3 1.59 V 68
Minimum reset pulse width 90 ns 68
Accuracy, internal 32.768 kHz oscillator -0.5 0.5 % T = 85C, VCC = 3V, After production calibration 68
Accuracy, internal 2 MHz oscillator -1.5 1.5 % T = 85C, VCC = 3V, After production calibration 68
Accuracy, internal 32 MHz oscillator -1.5 1.5 % T = 85C, VCC = 3V, After production calibration 68
Operating temperature -55 125 °C 61
Storage temperature -65 150 °C 61
Voltage on any pin with respect to ground -0.5 V With respect to Ground; upper limit printed as VCC+0.5V 61
Maximum operating voltage 3.6 V 61
DC current per I/O pin 20 mA 61
DC current VCC and GND pins 200 mA 61
Power supply voltage 1.6 3.6 V 2
Operating temperature (ordering range, -AU package) -40 85 °C Ordering code ATxmega32A4-AU 2

CAD (KiCad official)

  • Symbol: ATXMEGA32A4-AU
  • Footprint: Package_QFP:TQFP-44_10x10mm_P0.8mm
  • 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
  • 3D model files: atxmega32a4-au-etched.step / atxmega32a4-au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atxmega32a4-au.step / atxmega32a4-au.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (108 pp, sha256 66fb108fb8aabefc, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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