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ATTINY817-MN

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Microchip Tech Pre-ordered MCUs, QFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATTINY817-MN

Microchip Tech · Pre-ordered MCUs · QFN-24-EP(4x4)

ATTINY817-MN from Microchip Tech, in a QFN-24-EP(4x4). 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 PA2 bidirectional PORTA pin 2 general-purpose I/O with EVOUT0, AIN2, LUT0-IN2 and alternate RxD/MISO/SCL functions.
2 PA3 bidirectional PORTA pin 3 general-purpose I/O with EXTCLK external clock input, AIN3, WO3 and alternate XCK/SCK functions.
3 GND power_in Ground.
4 VDD power_in Power supply, operating range 1.8 V to 5.5 V.
5 PA4 bidirectional PORTA pin 4 general-purpose I/O with AIN4, PTC X0/Y0, SS, WO4, WOA, LUT0-OUT and alternate XDIR.
6 PA5 bidirectional PORTA pin 5 general-purpose I/O with AIN5, PTC X1/Y1, OUT, WO5, WO and WOB.
7 PA6 bidirectional PORTA pin 6 general-purpose I/O with AIN6, PTC X2/Y2, AINN0 and OUT (DAC0 OUT is on PA6).
8 PA7 bidirectional PORTA pin 7 general-purpose I/O with AIN7, PTC X3/Y3, AINP0 and LUT1-OUT.
9 PB7 bidirectional PORTB pin 7 general-purpose I/O with no other function listed in the multiplexing table.
10 PB6 bidirectional PORTB pin 6 general-purpose I/O with no other function listed in the multiplexing table.
11 PB5 bidirectional PORTB pin 5 general-purpose I/O with CLKOUT, AIN8, AINP1 and alternate WO2.
12 PB4 bidirectional PORTB pin 4 general-purpose I/O with AIN9, AINN1 and alternate WO1/LUT0-OUT.
13 PB3 bidirectional PORTB pin 3 general-purpose I/O with TOSC1 crystal oscillator pin, RxD and alternate WO0.
14 PB2 bidirectional PORTB pin 2 general-purpose I/O with TOSC2 crystal oscillator pin, EVOUT1, TxD and WO2.
15 PB1 bidirectional PORTB pin 1 general-purpose I/O with AIN10, PTC X4/Y4, XCK, SDA and WO1.
16 PB0 bidirectional PORTB pin 0 general-purpose I/O with AIN11, PTC X5/Y5, XDIR, SCL and WO0.
17 PC0 bidirectional PORTC pin 0 general-purpose I/O with WOC and alternate SCK/WO.
18 PC1 bidirectional PORTC pin 1 general-purpose I/O with WOD and alternate MISO/LUT1-OUT.
19 PC2 bidirectional PORTC pin 2 general-purpose I/O with EVOUT2 and alternate MOSI.
20 PC3 bidirectional PORTC pin 3 general-purpose I/O with LUT1-IN0 and alternate SS/WO3.
21 PC4 bidirectional PORTC pin 4 general-purpose I/O with LUT1-IN1 and alternate WO4.
22 PC5 bidirectional PORTC pin 5 general-purpose I/O with LUT1-IN2 and alternate WO5.
23 PA0 bidirectional PORTA pin 0, configurable by fuse as RESET, UPDI programming/debug or GPIO, with AIN0 and LUT0-IN0.
24 PA1 bidirectional PORTA pin 1 general-purpose I/O with AIN1, LUT0-IN1 and alternate TxD/MOSI/SDA.
25 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package QFN-24-EP(4x4)
Category Embedded Processors & Controllers
Pins 25

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VDD 1.8 5.5 V ATtiny817-MN ordering table: Supply Voltage 1.8V-5.5V 560
Operating Temperature Range -40 105 °C ATtiny817-MN ordering table: Temperature Range -40°C to +105°C 560
Max. CPU Speed 20 MHz ATtiny817-MN ordering table: Max. CPU Speed 20 MHz 560

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. In the Self Capacitance mode, the PTC requires only one pin (Y-line) for each touch sensor. 461

CAD (KiCad official)

  • Symbol: ATTINY817-MN
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • 3D model: QFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: attiny817-mn-etched.step / attiny817-mn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny817-mn.step / attiny817-mn.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (596 pp, sha256 c2392fe1c4c9666a, retrieved 2026-10-27, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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