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ATMEGA164P-20AUR

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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 & controllersatmega164p-20aurfactory-2.0.0extractor-text

Verified ATMEGA164P-20AUR

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier lcsc, 44 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATMEGA164P-20AUR · TQFP-44(10x10) · 44 pins
  • ✓copper: 44 copper pads, none touching another net
  • ✓datasheet: all 44 pin names found in the 496-page datasheet
  • ✓distributor: lcsc C1339362, digikey ATMEGA164P-20AURTR-ND, mouser 556-ATMEGA164P-20AUR
  • ✓family: TQFP-44_10x10mm_P0.8mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-b4t7wumt/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
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atmega164p-20aur.kicad_sym✓ atmega164p-20aur.kicad_mod✓ atmega164p-20aur.step
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ATMEGA164P-20AUR

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

ATMEGA164P-20AUR 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, 8-bit bi-directional I/O with internal pull-up; alternate functions MOSI (SPI master data out/slave data in) and PCINT13.
2 PB6 bidirectional Port B bit 6, bi-directional I/O with internal pull-up; alternate functions MISO (SPI master data in/slave data out) and PCINT14.
3 PB7 bidirectional Port B bit 7, bi-directional I/O with internal pull-up; alternate functions SCK (SPI clock) and 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.
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 (USART0 receive) and PCINT24.
10 PD1 bidirectional Port D bit 1, bi-directional I/O with internal pull-up; alternate functions TXD0 (USART0 transmit) and PCINT25.
11 PD2 bidirectional Port D bit 2, bi-directional I/O with internal pull-up; alternate functions INT0, RXD1 (USART1 receive) and PCINT26.
12 PD3 bidirectional Port D bit 3, bi-directional I/O with internal pull-up; alternate functions INT1, TXD1 (USART1 transmit) and PCINT27.
13 PD4 bidirectional Port D bit 4, bi-directional I/O with internal pull-up; alternate functions OC1B, XCK1 (USART1 external clock) and PCINT28.
14 PD5 bidirectional Port D bit 5, bi-directional I/O with internal pull-up; alternate functions OC1A and PCINT29.
15 PD6 bidirectional Port D bit 6, bi-directional I/O with internal pull-up; alternate functions ICP1 (Timer/Counter1 input capture), OC2B and PCINT30.
16 PD7 bidirectional Port D bit 7, bi-directional I/O with internal pull-up; alternate functions OC2A and PCINT31.
17 VCC power_in Digital supply voltage.
18 GND power_in Ground.
19 PC0 bidirectional Port C bit 0, bi-directional I/O with internal pull-up; alternate functions SCL (2-wire serial clock) and PCINT16.
20 PC1 bidirectional Port C bit 1, bi-directional I/O with internal pull-up; alternate functions SDA (2-wire serial data) and PCINT17.
21 PC2 bidirectional Port C bit 2, bi-directional I/O with internal pull-up; alternate functions TCK (JTAG) and PCINT18.
22 PC3 bidirectional Port C bit 3, bi-directional I/O with internal pull-up; alternate functions TMS (JTAG) and PCINT19.
23 PC4 bidirectional Port C bit 4, bi-directional I/O with internal pull-up; alternate functions TDO (JTAG) and PCINT20.
24 PC5 bidirectional Port C bit 5, bi-directional I/O with internal pull-up; alternate functions TDI (JTAG) and PCINT21.
25 PC6 bidirectional Port C bit 6, bi-directional I/O with internal pull-up; alternate functions TOSC1 and PCINT22.
26 PC7 bidirectional Port C bit 7, bi-directional I/O with internal pull-up; alternate functions TOSC2 and PCINT23.
27 AVCC power_in Supply voltage pin for Port A and the ADC; it must be connected to VCC even if the ADC is not used, 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 and ADC7 analog input; also PCINT7.
31 PA6 bidirectional Port A bit 6, bi-directional I/O with internal pull-up and ADC6 analog input; also PCINT6.
32 PA5 bidirectional Port A bit 5, bi-directional I/O with internal pull-up and ADC5 analog input; also PCINT5.
33 PA4 bidirectional Port A bit 4, bi-directional I/O with internal pull-up and ADC4 analog input; also PCINT4.
34 PA3 bidirectional Port A bit 3, bi-directional I/O with internal pull-up and ADC3 analog input; also PCINT3.
35 PA2 bidirectional Port A bit 2, bi-directional I/O with internal pull-up and ADC2 analog input; also PCINT2.
36 PA1 bidirectional Port A bit 1, bi-directional I/O with internal pull-up and ADC1 analog input; also PCINT1.
37 PA0 bidirectional Port A bit 0, bi-directional I/O with internal pull-up and ADC0 analog input; also PCINT0.
38 VCC power_in Digital supply voltage.
39 GND power_in Ground.
40 PB0 bidirectional Port B bit 0, bi-directional I/O with internal pull-up; alternate functions T0 (Timer/Counter0 external input), XCK0 (USART0 external clock) and PCINT8.
41 PB1 bidirectional Port B bit 1, bi-directional I/O with internal pull-up; alternate functions T1 (Timer/Counter1 external input), CLKO (divided system clock output) and PCINT9.
42 PB2 bidirectional Port B bit 2, bi-directional I/O with internal pull-up; alternate functions AIN0 (analog comparator positive input), INT2 and PCINT10.
43 PB3 bidirectional Port B bit 3, bi-directional I/O with internal pull-up; alternate functions AIN1 (analog comparator negative input), OC0A and PCINT11.
44 PB4 bidirectional Port B bit 4, bi-directional I/O with internal pull-up; alternate functions SS (SPI slave select input), OC0B and PCINT12.

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
Output Low Voltage VOL 0.9 V IOL = 20 mA, VCC = 5V 322
Output Low Voltage VOL 0.6 V IOL = 10 mA, VCC = 3V 322
Output High Voltage VOH 4.2 V IOH = -20 mA, VCC = 5V 322
Output High Voltage VOH 2.3 V IOH = -10 mA, VCC = 3V 322
Input Leakage Current I/O Pin (pin low) IIL 1 µA VCC = 5.5V, pin low (absolute value) 322
Input Leakage Current I/O Pin (pin high) IIH 1 µA VCC = 5.5V, pin high (absolute value) 322
Reset Pull-up Resistor RRST 30 60 kΩ 322
I/O Pin Pull-up Resistor RPU 20 50 kΩ 322
Analog Comparator Input Offset Voltage VACIO 40 mV VCC = 5V, Vin = VCC/2 323
Analog Comparator Input Leakage Current IACLK -50 50 nA VCC = 5V, Vin = VCC/2 323
Analog Comparator Propagation Delay tACID 750 ns VCC = 2.7V 323
Analog Comparator Propagation Delay tACID 500 ns VCC = 4.0V 323
Power Supply Current, Active ICC 0.4 0.5 mA Active 1 MHz, VCC = 2V 324
Power Supply Current, Active ICC 2.1 2.7 mA Active 4 MHz, VCC = 3V 324
Power Supply Current, Active ICC 7.4 9 mA Active 8 MHz, VCC = 5V 324
Power Supply Current, Idle ICC 0.1 0.15 mA Idle 1 MHz, VCC = 2V 324
Power Supply Current, Idle ICC 0.5 0.7 mA Idle 4 MHz, VCC = 3V 324
Power Supply Current, Idle ICC 1.9 5 mA Idle 8 MHz, VCC = 5V 324
Power Supply Current, Power-down mode ICC 4.3 8 µA WDT enabled, VCC = 3V 324
Power Supply Current, Power-down mode ICC 0.2 2 µA WDT disabled, VCC = 3V 324
Voltage on RESET with respect to Ground -0.5 13 V with respect to Ground 322
Operating Temperature -55 125 °C 322
Storage Temperature -65 150 °C 322
DC Current per I/O Pin 40 mA 322

CAD (KiCad official)

  • Symbol: ATMEGA164P-20AUR
  • Footprint: Package_QFP:TQFP-44_10x10mm_P0.8mm
  • 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
  • 3D model files: atmega164p-20aur-etched.step / atmega164p-20aur-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atmega164p-20aur.step / atmega164p-20aur.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (496 pp, sha256 5edda0efd505127f, retrieved 2026-11-05, tier: lcsc)
  • 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