component

ATTINY3217-MFR

Public Made by Adom

by adom

Microchip Tech Microcontrollers (MCU/MPU/SOC), WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentembedded processors & controllersattiny3217-mfrfactory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
attiny3217-mfr / README.md
History Download
Ray Publish 0.1.0 7c1059f 9d ago

ATTINY3217-MFR

Microchip Tech · Microcontrollers (MCU/MPU/SOC) · WQFN-24-EP(4x4)

ATTINY3217-MFR from Microchip Tech, in a WQFN-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 bit 2 general-purpose I/O, also usable as EVOUT0, AIN2, USART0 RxD, SPI0 MISO, TWI0 SCL and LUT0-IN2; PA2 has full asynchronous pin-change detection.
2 PA3 bidirectional PORTA bit 3 general-purpose I/O, also usable as the EXTCLK external clock input, AIN3, USART0 XCK, SPI0 SCK, TCA0 WO3 and TCB1.
3 GND power_in Ground reference for the device; the exposed pad should also be soldered to ground.
4 VDD power_in Input supply voltage, operating range 2.7 V to 5.5 V.
5 PA4 bidirectional PORTA bit 4 general-purpose I/O, also usable as AIN4, ADC1 AIN0, PTC X0/Y0, USART0 XDIR, SPI0 SS, TCA0 WO4, TCD0 WOA and LUT0-OUT.
6 PA5 bidirectional PORTA bit 5 general-purpose I/O, also usable as the VREFA external voltage reference input, AIN5, ADC1 AIN1, PTC X1/Y1, AC0 AINN0, TCA0 WO5, TCB0 and CCL WOB.
7 PA6 bidirectional PORTA bit 6 general-purpose I/O, also usable as AIN6, DAC0 OUT (analog output) and LUT1-OUT on the analog-capable pin set.
8 PA7 bidirectional PORTA bit 7 general-purpose I/O, also usable as AIN7, ADC1 AIN3, PTC X3/Y3 and LUT1-OUT.
9 PB7 bidirectional PORTB bit 7 general-purpose I/O, also usable as analog input AIN4 and AC inputs AINN1 and AINP3 (VQFN-only pin).
10 PB6 bidirectional PORTB bit 6 general-purpose I/O, also usable as analog input AIN5 and AC inputs AINP3 and AINN1 (VQFN-only pin).
11 PB5 bidirectional PORTB bit 5 general-purpose I/O, also usable as CLKOUT, AIN8, PTC X12/Y12, AC inputs AINP1 and AINP2, and TCA0 WO2.
12 PB4 bidirectional PORTB bit 4 general-purpose I/O, also usable as AIN9, PTC X13/Y13, AINN1, AINP3, TCA0 WO1 and LUT0-OUT.
13 PB3 bidirectional PORTB bit 3 general-purpose I/O, also usable as TOSC1, the crystal oscillator input for the 32.768 kHz oscillator, plus OUT, USART0 RxD and TCA0 WO0.
14 PB2 bidirectional PORTB bit 2 general-purpose I/O, also usable as TOSC2, the crystal oscillator output for the 32.768 kHz oscillator, plus EVOUT1, OUT, USART0 TxD and TCA0 WO2.
15 PB1 bidirectional PORTB bit 1 general-purpose I/O, also usable as AIN10, PTC X4/Y4, AC input AINP2, USART0 XCK, TWI0 SDA and TCA0 WO1.
16 PB0 bidirectional PORTB bit 0 general-purpose I/O, also usable as AIN11, PTC X5/Y5, AC inputs AINP2 and AINP1, USART0 XDIR, TWI0 SCL and TCA0 WO0.
17 PC0 bidirectional PORTC bit 0 general-purpose I/O, also usable as ADC0 AIN6, PTC X6/Y6, SPI0 SCK, TCB0 and TCA0 WOC.
18 PC1 bidirectional PORTC bit 1 general-purpose I/O, also usable as ADC0 AIN7, PTC X7/Y7, SPI0 MISO, TCA0 WOD and LUT1-OUT.
19 PC2 bidirectional PORTC bit 2 general-purpose I/O, also usable as EVOUT2, ADC0 AIN8, PTC X8/Y8 and SPI0 MOSI.
20 PC3 bidirectional PORTC bit 3 general-purpose I/O, also usable as ADC0 AIN9, PTC X9/Y9, SPI0 SS, TCA0 WO3 and LUT1-IN0.
21 PC4 bidirectional PORTC bit 4 general-purpose I/O, also usable as ADC0 AIN10, PTC X10/Y10, TCA0 WO4, TCB1 and LUT1-IN1.
22 PC5 bidirectional PORTC bit 5 general-purpose I/O, also usable as ADC0 AIN11, PTC X11/Y11, TCA0 WO5 and LUT1-IN2.
23 PA0/RESET/UPDI bidirectional Multiplexed pin: RESET or the one-wire UPDI programming/debug interface, selected by the RSTPINCFG fuse (GPIO, UPDI or RESET), otherwise PORTA bit 0 with ADC0 AIN0 and LUT0-IN0.
24 PA1 bidirectional PORTA bit 1 general-purpose I/O, also usable as AIN1, USART0 TxD, SPI0 MOSI, TWI0 SDA and LUT0-IN1.
25 EP passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package WQFN-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 (ATtiny3217 VQFN ordering row) VDD 2.7 5.5 V 558
Max CPU speed (ATtiny3217 VQFN ordering row) fCPU 16 MHz 558

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. 458

CAD (KiCad official)

  • Symbol: ATTINY3217-MFR
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.7x2.7mm
  • 3D model: WQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: attiny3217-mfr-etched.step / attiny3217-mfr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny3217-mfr.step / attiny3217-mfr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (572 pp, sha256 97cb689010a2d3b4, retrieved 2026-10-18, tier: lcsc)
  • 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