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ATMEGA8535-16AU
Public Made by Adomby adom
Microchip Tech ATMEL & AVR, TQFP-44(10x10). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownATMEGA8535-16AU
Microchip Tech · ATMEL & AVR · TQFP-44(10x10)
ATMEGA8535-16AU 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 selectable internal pull-up; alternate function MOSI (SPI). |
| 2 | PB6 | bidirectional | Port B bit 6, bi-directional I/O with selectable internal pull-up; alternate function MISO (SPI). |
| 3 | PB7 | bidirectional | Port B bit 7, bi-directional I/O with selectable internal pull-up; alternate function SCK (SPI). |
| 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 selectable internal pull-up; alternate function RXD (USART). |
| 10 | PD1 | bidirectional | Port D bit 1, bi-directional I/O with selectable internal pull-up; alternate function TXD (USART). |
| 11 | PD2 | bidirectional | Port D bit 2, bi-directional I/O with selectable internal pull-up; alternate function INT0. |
| 12 | PD3 | bidirectional | Port D bit 3, bi-directional I/O with selectable internal pull-up; alternate function INT1. |
| 13 | PD4 | bidirectional | Port D bit 4, bi-directional I/O with selectable internal pull-up; alternate function OC1B. |
| 14 | PD5 | bidirectional | Port D bit 5, bi-directional I/O with selectable internal pull-up; alternate function OC1A. |
| 15 | PD6 | bidirectional | Port D bit 6, bi-directional I/O with selectable internal pull-up; alternate function ICP1. |
| 16 | PD7 | bidirectional | Port D bit 7, bi-directional I/O with selectable internal pull-up; alternate function OC2. |
| 17 | VCC | power_in | Digital supply voltage. |
| 18 | GND | power_in | Ground. |
| 19 | PC0 | bidirectional | Port C bit 0, bi-directional I/O with selectable internal pull-up; alternate function SCL (two-wire interface). |
| 20 | PC1 | bidirectional | Port C bit 1, bi-directional I/O with selectable internal pull-up; alternate function SDA (two-wire interface). |
| 21 | PC2 | bidirectional | Port C bit 2, bi-directional I/O with selectable internal pull-up. |
| 22 | PC3 | bidirectional | Port C bit 3, bi-directional I/O with selectable internal pull-up. |
| 23 | PC4 | bidirectional | Port C bit 4, bi-directional I/O with selectable internal pull-up. |
| 24 | PC5 | bidirectional | Port C bit 5, bi-directional I/O with selectable internal pull-up. |
| 25 | PC6 | bidirectional | Port C bit 6, bi-directional I/O with selectable internal pull-up; alternate function TOSC1. |
| 26 | PC7 | bidirectional | Port C bit 7, bi-directional I/O with selectable internal pull-up; alternate function TOSC2. |
| 27 | AVCC | power_in | Supply voltage pin for Port A and the A/D Converter; 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 A/D Converter. |
| 30 | PA7 | bidirectional | Port A bit 7, analog input ADC7 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 31 | PA6 | bidirectional | Port A bit 6, analog input ADC6 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 32 | PA5 | bidirectional | Port A bit 5, analog input ADC5 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 33 | PA4 | bidirectional | Port A bit 4, analog input ADC4 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 34 | PA3 | bidirectional | Port A bit 3, analog input ADC3 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 35 | PA2 | bidirectional | Port A bit 2, analog input ADC2 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 36 | PA1 | bidirectional | Port A bit 1, analog input ADC1 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 37 | PA0 | bidirectional | Port A bit 0, analog input ADC0 to the A/D Converter or bi-directional I/O with selectable pull-up. |
| 38 | VCC | power_in | Digital supply voltage. |
| 39 | GND | power_in | Ground. |
| 40 | PB0 | bidirectional | Port B bit 0, bi-directional I/O with selectable internal pull-up; alternate functions XCK/T0. |
| 41 | PB1 | bidirectional | Port B bit 1, bi-directional I/O with selectable internal pull-up; alternate function T1. |
| 42 | PB2 | bidirectional | Port B bit 2, bi-directional I/O with selectable internal pull-up; alternate functions AIN0/INT2. |
| 43 | PB3 | bidirectional | Port B bit 3, bi-directional I/O with selectable internal pull-up; alternate functions AIN1/OC0. |
| 44 | PB4 | bidirectional | Port B bit 4, bi-directional I/O with selectable internal pull-up; alternate function SS (SPI). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TQFP-44(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 44 |
CAD (KiCad official)
- Symbol:
ATMEGA8535-16AU - Footprint:
Package_QFP:TQFP-44_10x10mm_P0.8mm - 3D model: TQFP-44(10x10) (KiCad packages3D, STEP)
- 3D model files:
atmega8535-16au-etched.step/atmega8535-16au-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);atmega8535-16au.step/atmega8535-16au.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (22 pp, sha256
c38c5b38530fba75, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).