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ATTINY3217-MNR

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

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ATTINY3217-MNR

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

ATTINY3217-MNR 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 General-purpose I/O PA2; alternate functions include EVOUT0, ADC0 AIN2, USART0 RxD, SPI0 MISO, TWI0 SCL and CCL LUT0-IN2 (Table 5-1).
2 PA3 bidirectional General-purpose I/O PA3; alternate functions include EXTCLK external clock input, ADC0 AIN3, USART0 XCK, SPI0 SCK, TCA0 WO3 and TCB1 (Table 5-1).
3 GND power_in Ground reference for the device.
4 VDD power_in Supply voltage; operating supply voltage is 2.7 V to 5.5 V (Table 37-2).
5 PA4 bidirectional General-purpose I/O PA4 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
6 PA5 bidirectional General-purpose I/O PA5; alternate functions include VREFA external voltage reference input, ADC0 AIN5 and TCB0 output (Table 5-1).
7 PA6 bidirectional General-purpose I/O PA6; also the DAC0 analog output OUT (Table 32-2) and ADC0 AIN6 input (Table 5-1).
8 PA7 bidirectional General-purpose I/O PA7 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
9 PB7 bidirectional General-purpose I/O PB7 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
10 PB6 bidirectional General-purpose I/O PB6 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
11 PB5 bidirectional General-purpose I/O PB5; alternate functions include CLKOUT clock output, ADC0 AIN8 and WO2 (Table 5-1).
12 PB4 bidirectional General-purpose I/O PB4 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
13 PB3 passive Port B bit 3 shared with the 32.768 kHz crystal oscillator connection TOSC1 (XOSC32K) and ADC/AC/CCL functions per Table 5-1.
14 PB2 passive Port B bit 2 shared with the 32.768 kHz crystal oscillator connection TOSC2 (XOSC32K) and EVOUT1 event output (Table 5-1).
15 PB1 bidirectional General-purpose I/O PB1 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
16 PB0 bidirectional General-purpose I/O PB0 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
17 PC0 bidirectional General-purpose I/O PC0 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
18 PC1 bidirectional General-purpose I/O PC1 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
19 PC2 bidirectional General-purpose I/O PC2; alternate functions include EVOUT2 event output, ADC0 AIN8 and SPI0 MOSI (Table 5-1).
20 PC3 bidirectional General-purpose I/O PC3 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
21 PC4 bidirectional General-purpose I/O PC4 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
22 PC5 bidirectional General-purpose I/O PC5 with analog and digital alternate functions as listed for this pin in Table 5-1; PORTMUX selects alternate positions.
23 PA0/RESET/UPDI bidirectional Multiplexed pin: RESET, UPDI single-pin programming/debug interface, or GPIO, selected by FUSE.SYSCFG0 RSTPINCFG (Section 7.10.4.5).
24 PA1 bidirectional General-purpose I/O PA1; alternate functions include ADC0 AIN1, USART0 TxD, SPI0 MOSI, TWI0 SDA and CCL LUT0-IN1 (Table 5-1).
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 2.7 5.5 V Ordering table row for 24-pin VQFN ATtiny3217 (-MBT-VAO, -MZT-VAO); the MNR code is not listed 558
Max CPU Speed 16 MHz Ordering table row for 24-pin VQFN ATtiny3217 (-MBT-VAO, -MZT-VAO); the MNR code is not listed 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-MNR
  • Footprint: Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm
  • 3D model: WQFN-24-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: attiny3217-mnr-etched.step / attiny3217-mnr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny3217-mnr.step / attiny3217-mnr.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 2026-10-28, 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