component
ATmega32U4
Public Made by Adomby adom
Microchip 8-bit AVR MCU with native full-speed USB, TQFP-44. 32 KB flash, 16 MHz, the Arduino Leonardo chip. Datasheet-verified.
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page.json+341−8@@ -1,8 +1,11 @@ {+ "schema_version": 1,+ "type": "component", "slug": "atmega32u4",+ "title": "ATmega32U4",+ "brief": "Microchip 8-bit AVR MCU with native full-speed USB, TQFP-44. 32 KB flash, 16 MHz, the Arduino Leonardo chip. Datasheet-verified.", "version": "0.1.0",- "type": "component",- "description": "Microchip 8-bit AVR MCU with native full-speed USB, TQFP-44. 32 KB flash, 16 MHz, the Arduino Leonardo chip. Datasheet-verified.",+ "license": "CC-BY-SA-4.0", "tags": [ "component", "microcontroller",@@ -13,6 +16,341 @@ "tqfp-44", "microchip" ],+ "component": {+ "mpn": "ATmega32U4",+ "manufacturer": "Microchip Technology",+ "package": "TQFP-44",+ "pin_count": 44,+ "category": "Microcontroller",+ "subcategory": "8-bit AVR MCU with USB",+ "datasheet": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7766-8-bit-AVR-ATmega16U4-32U4_Datasheet.pdf",+ "parts": {+ "symbol": "atmega32u4.kicad_sym",+ "footprint": "atmega32u4.kicad_mod",+ "model_3d": "atmega32u4.glb"+ },+ "distributor_links": {},+ "pins": [+ {+ "number": "1",+ "name": "PE6/INT6/AIN0",+ "type": "bidirectional",+ "description": "Port E bit 6 GPIO with internal pull-up. Alternate: INT6 external interrupt input, AIN0 analog comparator positive input. Tri-stated on reset."+ },+ {+ "number": "2",+ "name": "UVCC",+ "type": "power_in",+ "description": "USB pads internal 3.3V regulator input supply voltage. Connect to VCC through a decoupling network per USB module requirements."+ },+ {+ "number": "3",+ "name": "D-",+ "type": "bidirectional",+ "description": "USB 2.0 Full-Speed/Low-Speed negative data upstream port. Connect to the USB connector D- pin through a 22\u03a9 series resistor."+ },+ {+ "number": "4",+ "name": "D+",+ "type": "bidirectional",+ "description": "USB 2.0 Full-Speed/Low-Speed positive data upstream port. Connect to the USB connector D+ pin through a 22\u03a9 series resistor."+ },+ {+ "number": "5",+ "name": "UGND",+ "type": "power_in",+ "description": "USB pads ground reference. Tie to system GND."+ },+ {+ "number": "6",+ "name": "UCAP",+ "type": "passive",+ "description": "USB pads internal 3.3V regulator output. Connect to an external 1\u00b5F ceramic bypass capacitor to GND."+ },+ {+ "number": "7",+ "name": "VBUS",+ "type": "input",+ "description": "USB VBUS monitor input used by firmware to detect host connection/disconnection. Sensed via internal comparator; may be connected to the USB VBUS rail (nominal 5V) directly or through a divider."+ },+ {+ "number": "8",+ "name": "PB0/SS/PCINT0",+ "type": "bidirectional",+ "description": "Port B bit 0 GPIO with internal pull-up. Alternate: SPI slave-select (SS), pin-change interrupt PCINT0."+ },+ {+ "number": "9",+ "name": "PB1/SCLK/PCINT1",+ "type": "bidirectional",+ "description": "Port B bit 1 GPIO with internal pull-up. Alternate: SPI serial clock (SCLK/SCK), pin-change interrupt PCINT1."+ },+ {+ "number": "10",+ "name": "PB2/PDI/MOSI/PCINT2",+ "type": "bidirectional",+ "description": "Port B bit 2 GPIO with internal pull-up. Alternate: SPI MOSI, ISP programming data input (PDI), pin-change interrupt PCINT2."+ },+ {+ "number": "11",+ "name": "PB3/PDO/MISO/PCINT3",+ "type": "bidirectional",+ "description": "Port B bit 3 GPIO with internal pull-up. Alternate: SPI MISO, ISP programming data output (PDO), pin-change interrupt PCINT3."+ },+ {+ "number": "12",+ "name": "PB7/OC0A/OC1C/RTS/PCINT7",+ "type": "bidirectional",+ "description": "Port B bit 7 GPIO with internal pull-up. Alternate: Timer/Counter 0 output compare A (OC0A), Timer/Counter 1 output compare C (OC1C), USART RTS flow-control, pin-change interrupt PCINT7."+ },+ {+ "number": "13",+ "name": "RESET",+ "type": "input",+ "description": "Active-low external reset input. A low level longer than the minimum pulse length triggers a reset even without the clock running. Has an internal pull-up; drive with an open-drain source or add an external pull-up + decoupling cap."+ },+ {+ "number": "14",+ "name": "VCC",+ "type": "power_in",+ "description": "Digital supply voltage (2.7-5.5V). Decouple to GND with a 100nF ceramic close to the pin."+ },+ {+ "number": "15",+ "name": "GND",+ "type": "power_in",+ "description": "Digital ground reference."+ },+ {+ "number": "16",+ "name": "XTAL2",+ "type": "output",+ "description": "Output from the inverting on-chip oscillator amplifier. Connect to the far side of the external crystal/resonator with the appropriate load capacitor. Leave open when driving XTAL1 from an external clock."+ },+ {+ "number": "17",+ "name": "XTAL1",+ "type": "input",+ "description": "Input to the inverting on-chip oscillator amplifier and the internal clock generator. Connect to the near side of the external crystal/resonator or to an external CMOS clock source."+ },+ {+ "number": "18",+ "name": "PD0/OC0B/SCL/INT0",+ "type": "bidirectional",+ "description": "Port D bit 0 GPIO with internal pull-up. Alternate: Timer/Counter 0 output compare B (OC0B), TWI (I\u00b2C) clock line SCL, external interrupt INT0."+ },+ {+ "number": "19",+ "name": "PD1/SDA/INT1",+ "type": "bidirectional",+ "description": "Port D bit 1 GPIO with internal pull-up. Alternate: TWI (I\u00b2C) data line SDA, external interrupt INT1."+ },+ {+ "number": "20",+ "name": "PD2/RXD1/INT2",+ "type": "bidirectional",+ "description": "Port D bit 2 GPIO with internal pull-up. Alternate: USART1 receive data (RXD1), external interrupt INT2."+ },+ {+ "number": "21",+ "name": "PD3/TXD1/INT3",+ "type": "bidirectional",+ "description": "Port D bit 3 GPIO with internal pull-up. Alternate: USART1 transmit data (TXD1), external interrupt INT3."+ },+ {+ "number": "22",+ "name": "PD5/XCK1/CTS",+ "type": "bidirectional",+ "description": "Port D bit 5 GPIO with internal pull-up. Alternate: USART1 synchronous clock (XCK1), USART CTS hardware flow-control."+ },+ {+ "number": "23",+ "name": "GND",+ "type": "power_in",+ "description": "Digital ground reference (second GND pin)."+ },+ {+ "number": "24",+ "name": "AVCC",+ "type": "power_in",+ "description": "Supply voltage for Port F and the A/D converter. If the ADC is unused, tie directly to VCC; if used, connect to VCC through a low-pass (typ. 10\u03a9 + 100nF)."+ },+ {+ "number": "25",+ "name": "PD4/ICP1/ADC8",+ "type": "bidirectional",+ "description": "Port D bit 4 GPIO with internal pull-up. Alternate: Timer/Counter 1 input capture (ICP1), ADC channel 8 analog input."+ },+ {+ "number": "26",+ "name": "PD6/T1/OC4D/ADC9",+ "type": "bidirectional",+ "description": "Port D bit 6 GPIO with internal pull-up. Alternate: Timer/Counter 1 external clock (T1), Timer/Counter 4 output compare D inverted (OC4D\u0305), ADC channel 9 analog input."+ },+ {+ "number": "27",+ "name": "PD7/T0/OC4D/ADC10",+ "type": "bidirectional",+ "description": "Port D bit 7 GPIO with internal pull-up. Alternate: Timer/Counter 0 external clock (T0), Timer/Counter 4 output compare D (OC4D), ADC channel 10 analog input."+ },+ {+ "number": "28",+ "name": "PB4/PCINT4/ADC11",+ "type": "bidirectional",+ "description": "Port B bit 4 GPIO with internal pull-up. Alternate: pin-change interrupt PCINT4, ADC channel 11 analog input."+ },+ {+ "number": "29",+ "name": "PB5/PCINT5/OC1A/OC4B/ADC12",+ "type": "bidirectional",+ "description": "Port B bit 5 GPIO with internal pull-up. Alternate: pin-change interrupt PCINT5, Timer/Counter 1 output compare A (OC1A), Timer/Counter 4 output compare B inverted (OC4B\u0305), ADC channel 12 analog input."+ },+ {+ "number": "30",+ "name": "PB6/PCINT6/OC1B/OC4B/ADC13",+ "type": "bidirectional",+ "description": "Port B bit 6 GPIO with internal pull-up. Alternate: pin-change interrupt PCINT6, Timer/Counter 1 output compare B (OC1B), Timer/Counter 4 output compare B (OC4B), ADC channel 13 analog input."+ },+ {+ "number": "31",+ "name": "PC6/OC3A/OC4A",+ "type": "bidirectional",+ "description": "Port C bit 6 GPIO with internal pull-up. Alternate: Timer/Counter 3 output compare A (OC3A), Timer/Counter 4 output compare A inverted (OC4A\u0305)."+ },+ {+ "number": "32",+ "name": "PC7/ICP3/CLK0/OC4A",+ "type": "bidirectional",+ "description": "Port C bit 7 GPIO with internal pull-up. Alternate: Timer/Counter 3 input capture (ICP3), system clock output (CLK0/CLKO), Timer/Counter 4 output compare A (OC4A)."+ },+ {+ "number": "33",+ "name": "PE2/HWB",+ "type": "bidirectional",+ "description": "Port E bit 2 GPIO with internal pull-up. Alternate: Hardware Bootloader (HWB) select input, latched at reset to force execution of the bootloader when pulled low. Often tied to a button + pull-up for USB DFU entry."+ },+ {+ "number": "34",+ "name": "VCC",+ "type": "power_in",+ "description": "Digital supply voltage (2.7-5.5V), second VCC pin. Decouple locally with a 100nF ceramic to GND."+ },+ {+ "number": "35",+ "name": "GND",+ "type": "power_in",+ "description": "Digital ground reference (third GND pin)."+ },+ {+ "number": "36",+ "name": "PF7/ADC7/TDI",+ "type": "bidirectional",+ "description": "Port F bit 7 GPIO with internal pull-up. Alternate: ADC channel 7 analog input, JTAG test data input (TDI). When JTAG is enabled the internal pull-up is forced active even in reset."+ },+ {+ "number": "37",+ "name": "PF6/ADC6/TDO",+ "type": "bidirectional",+ "description": "Port F bit 6 GPIO with internal pull-up. Alternate: ADC channel 6 analog input, JTAG test data output (TDO)."+ },+ {+ "number": "38",+ "name": "PF5/ADC5/TMS",+ "type": "bidirectional",+ "description": "Port F bit 5 GPIO with internal pull-up. Alternate: ADC channel 5 analog input, JTAG test mode select (TMS). When JTAG is enabled the internal pull-up is forced active even in reset."+ },+ {+ "number": "39",+ "name": "PF4/ADC4/TCK",+ "type": "bidirectional",+ "description": "Port F bit 4 GPIO with internal pull-up. Alternate: ADC channel 4 analog input, JTAG test clock (TCK). When JTAG is enabled the internal pull-up is forced active even in reset."+ },+ {+ "number": "40",+ "name": "PF1/ADC1",+ "type": "bidirectional",+ "description": "Port F bit 1 GPIO with internal pull-up. Alternate: ADC channel 1 analog input."+ },+ {+ "number": "41",+ "name": "PF0/ADC0",+ "type": "bidirectional",+ "description": "Port F bit 0 GPIO with internal pull-up. Alternate: ADC channel 0 analog input."+ },+ {+ "number": "42",+ "name": "AREF",+ "type": "passive",+ "description": "Analog reference input for the A/D converter. Connect an external reference or decouple to GND with 100nF when using AVCC/internal 2.56V reference. Must not exceed AVCC."+ },+ {+ "number": "43",+ "name": "GND",+ "type": "power_in",+ "description": "Analog ground reference; tie to GND star point near AVCC decoupling."+ },+ {+ "number": "44",+ "name": "AVCC",+ "type": "power_in",+ "description": "Analog supply voltage for Port F and the A/D converter (second AVCC pin). If the ADC is unused, tie directly to VCC; if used, connect to VCC through a low-pass filter."+ }+ ],+ "provenance": {+ "extractor": "ds2sf",+ "datasheet": {+ "url": "https://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-7766-8-bit-AVR-ATmega16U4-32U4_Datasheet.pdf",+ "pages": 12,+ "sha256": "8ead4c44bcf240ef",+ "source_tier": "mfr"+ },+ "cad": "KiCad official (CC-BY-SA 4.0)",+ "pins": {+ "total": 44,+ "described": 44,+ "cites_pages": true,+ "refuses_to_fabricate": true+ }+ },+ "viewers": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "metadata": {+ "specs": {+ "Core": "8-bit AVR RISC",+ "Flash": "32 KB",+ "SRAM": "2.5 KB",+ "EEPROM": "1 KB",+ "USB": "full-speed device (on-chip, no external PHY)",+ "Max clock": "16 MHz",+ "I/O": "26",+ "ADC": "12-channel 10-bit",+ "Supply voltage": "2.7-5.5 V",+ "Package": "TQFP-44"+ }+ },+ "sections": [+ "hero",+ "viewers",+ "readme",+ "breadcrumbs",+ "info"+ ],+ "discovery_triggers": [+ "atmega32u4",+ "32u4",+ "arduino leonardo chip",+ "pro micro",+ "avr with usb",+ "native usb avr"+ ],+ "discovery_pitch": "ATmega32U4 8-bit AVR microcontroller with native USB (TQFP-44, the Arduino Leonardo/Pro Micro chip) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }, "dependencies": {}, "hero": { "type": "image",@@ -28,10 +366,5 @@ "docs/atmega32u4-datasheet.pdf", "viewers/symbol.html", "viewers/footprint.html"- ],- "visibility": "public",- "author": {- "name": "Ray",- "email": "[email protected]"- }+ ] }