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ATMEGA48A-AU

Public Made by Adom

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Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), TQFP-32(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentsingle chip microcomputer-microcontrolleratmega48a-aufactory-2.0.0extractor-text

Verified ATMEGA48A-AU

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

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 32 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: ATMEGA48A-AU · TQFP-32(7x7) · 32 pins
  • ✓copper: 32 copper pads, none touching another net
  • ✓datasheet: all 32 pin names found in the 653-page datasheet
  • ✓distributor: lcsc C618734, digikey ATMEGA48A-AU-ND, mouser 556-ATMEGA48A-AU
  • ✓family: TQFP-32_7x7mm_P0.8mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-eu8nxox3/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: 32 pins = 32 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 32 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ atmega48a-au.kicad_sym✓ atmega48a-au.kicad_mod✓ atmega48a-au.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs atmega48a-au: hero re-rendered with the chip (after the 10-30 render outage) · Ray 5d ago
viewers atmega48a-au: viewers · Ray 5d ago
atmega48a-au-etched.glb Publish 0.1.0 · Ray 5d ago
atmega48a-au-etched.step atmega48a-au: factory component page (tier=mfr) · Ray 5d ago
atmega48a-au-hero.glb atmega48a-au: hero GLB from the etched model (keeps the MPN mark) · Ray 5d ago
atmega48a-au-hero.overlay.json Publish 0.1.0 · Ray 5d ago
atmega48a-au.glb Publish 0.1.0 · Ray 5d ago
atmega48a-au.kicad_mod Publish 0.1.0 · Ray 5d ago
atmega48a-au.kicad_sym Publish 0.1.0 · Ray 5d ago
atmega48a-au.lbr Publish 0.1.0 · Ray 5d ago
atmega48a-au.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 mfr, 32 pins · Ray 5d ago

ATMEGA48A-AU

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · TQFP-32(7x7)

ATMEGA48A-AU from Microchip Tech, in a TQFP-32(7x7). 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 PD3 bidirectional Port D bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions INT1 / OC2B / PCINT19.
2 PD4 bidirectional Port D bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions XCK / T0 / PCINT20.
3 GND power_in Ground.
4 VCC power_in Digital supply voltage.
5 GND power_in Ground.
6 VCC power_in Digital supply voltage.
7 PB6 bidirectional Port B bit 6 is a bi-directional I/O pin with internal pull-up; depending on the clock fuse settings it is the input to the inverting oscillator amplifier (XTAL1/TOSC1) and cannot be used as I/O when used as a clock pin.
8 PB7 bidirectional Port B bit 7 is a bi-directional I/O pin with internal pull-up; depending on the clock fuse settings it is the output of the inverting oscillator amplifier (XTAL2/TOSC2) and cannot be used as I/O when used as a clock pin.
9 PD5 bidirectional Port D bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions T1 / OC0B / PCINT21.
10 PD6 bidirectional Port D bit 6 is a bi-directional I/O pin with internal pull-up, alternate functions AIN0 (analog comparator positive input) / OC0A / PCINT22.
11 PD7 bidirectional Port D bit 7 is a bi-directional I/O pin with internal pull-up, alternate functions AIN1 (analog comparator negative input) / PCINT23.
12 PB0 bidirectional Port B bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions ICP1 / CLKO / PCINT0.
13 PB1 bidirectional Port B bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions OC1A / PCINT1.
14 PB2 bidirectional Port B bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions SS / OC1B / PCINT2.
15 PB3 bidirectional Port B bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions MOSI / OC2A / PCINT3.
16 PB4 bidirectional Port B bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions MISO / PCINT4.
17 PB5 bidirectional Port B bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions SCK / PCINT5.
18 AVCC power_in Supply voltage pin for the A/D converter, PC3:0 and ADC7:6; it should be connected to VCC even if the ADC is not used, and through a low-pass filter if the ADC is used.
19 ADC6 input Analog input channel 6 of the 10-bit A/D converter (TQFP and VQFN package only), powered from the analog supply.
20 AREF power_in Analog reference pin for the A/D Converter.
21 GND power_in Ground.
22 ADC7 input Analog input channel 7 of the 10-bit A/D converter (TQFP and VQFN package only), powered from the analog supply.
23 PC0 bidirectional Port C bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions ADC0 / PCINT8; ADC input channel 0 uses analog power.
24 PC1 bidirectional Port C bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions ADC1 / PCINT9; ADC input channel 1 uses analog power.
25 PC2 bidirectional Port C bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions ADC2 / PCINT10; ADC input channel 2 uses analog power.
26 PC3 bidirectional Port C bit 3 is a bi-directional I/O pin with internal pull-up, alternate functions ADC3 / PCINT11; ADC input channel 3 uses analog power.
27 PC4 bidirectional Port C bit 4 is a bi-directional I/O pin with internal pull-up, alternate functions SDA (2-wire serial data) / ADC4 / PCINT12; ADC input channel 4 uses digital power.
28 PC5 bidirectional Port C bit 5 is a bi-directional I/O pin with internal pull-up, alternate functions SCL (2-wire serial clock) / ADC5 / PCINT13; ADC input channel 5 uses digital power.
29 PC6 bidirectional Port C bit 6 is the RESET input when the RSTDISBL fuse is unprogrammed (a low level longer than the minimum pulse length generates a reset) and a normal I/O pin when RSTDISBL is programmed; alternate function PCINT14.
30 PD0 bidirectional Port D bit 0 is a bi-directional I/O pin with internal pull-up, alternate functions RXD (USART receive data input) / PCINT16.
31 PD1 bidirectional Port D bit 1 is a bi-directional I/O pin with internal pull-up, alternate functions TXD (USART transmit data output) / PCINT17.
32 PD2 bidirectional Port D bit 2 is a bi-directional I/O pin with internal pull-up, alternate functions INT0 (external interrupt 0 input) / PCINT18.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TQFP-32(7x7)
Category Single Chip Microcomputer/Microcontroller
Pins 32

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Storage temperature -65 150 °C 308
Operating temperature -55 125 °C 308
Voltage on any pin except RESET with respect to ground (lower limit) -0.5 V 308
Voltage on RESET with respect to ground -0.5 13 V 308
DC current per I/O pin 40 mA 308
DC current VCC and GND pins 200 mA 308
Power supply current, active mode ICC 0.2 0.55 mA Active 1MHz, VCC = 2V 308
Power supply current, active mode ICC 1.2 3.5 mA Active 4MHz, VCC = 3V 308
Power supply current, active mode ICC 4 12 mA Active 8MHz, VCC = 5V 308
Power supply current, idle mode ICC 0.03 0.5 mA Idle 1MHz, VCC = 2V 308
Power supply current, idle mode ICC 0.21 1.5 mA Idle 4MHz, VCC = 3V 308
Power supply current, idle mode ICC 0.9 5.5 mA Idle 8MHz, VCC = 5V 308
Power supply current, power-down mode ICC 3.9 15 µA Power-down mode, WDT enabled, VCC = 3V 308
Power supply current, power-down mode ICC 0.1 2 µA Power-down mode, WDT disabled, VCC = 3V 308
Supply voltage VCC (industrial) VCC 1.8 5.5 V ATmega48A-AU ordering information; Industrial -40°C to 85°C 628
Maximum speed grade 20 MHz ATmega48A-AU speed grade; see Speed Grades 628

CAD (KiCad official)

  • Symbol: ATMEGA48A-AU
  • Footprint: Package_QFP:TQFP-32_7x7mm_P0.8mm
  • 3D model: TQFP-32(7x7) (KiCad packages3D, STEP)
  • 3D model files: atmega48a-au-etched.step / atmega48a-au-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); atmega48a-au.step / atmega48a-au.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (653 pp, sha256 b9b9d83cda56a95d, retrieved 2026-10-30, 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