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ATTINY1616-SNR

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Microchip Tech Pre-ordered MCUs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATTINY1616-SNR

Microchip Tech · Pre-ordered MCUs · SOIC-20-300mil

ATTINY1616-SNR from Microchip Tech, in a SOIC-20-300mil. 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 VDD power_in Input supply pin for the GPIO VDD power domain; operating supply voltage is 1.8V to 5.5V.
2 PA4 bidirectional General purpose I/O pin with analog inputs AIN4/AIN0, USART0 XDIR, SPI0 SS, TCA0 WO4 and TCB0 WOA alternate functions.
3 PA5 bidirectional General purpose I/O pin that can serve as external voltage reference VREFA, with analog input AIN5 and TCA0 WO5 and TCB0 WO functions.
4 PA6 bidirectional General purpose I/O pin with analog input AIN6 and the DAC0 analog output OUT, which must be configured in the port before use.
5 PA7 bidirectional General purpose I/O pin with analog input AIN7 and LUT1-OUT alternate function.
6 PB5 bidirectional General purpose I/O pin with CLKOUT, analog input AIN8 and TCB0 WO alternate functions.
7 PB4 bidirectional General purpose I/O pin with analog input AIN9 and LUT0-OUT alternate function.
8 PB3 bidirectional General purpose I/O pin that also serves as TOSC1 crystal oscillator input for the 32.768 kHz external crystal.
9 PB2 bidirectional General purpose I/O pin that also serves as TOSC2 crystal oscillator output and EVOUT1 event output.
10 PB1 bidirectional General purpose I/O pin with analog input AIN10 and USART0 XCK, TWI0 SDA and TCA0 WO1 alternate functions.
11 PB0 bidirectional General purpose I/O pin with analog input AIN11 and USART0 XDIR, TWI0 SCL and TCA0 WO0 alternate functions.
12 PC0 bidirectional General purpose I/O pin with analog input AIN6 and SPI0 SCK, TCB0 and TCA0 WOC alternate functions.
13 PC1 bidirectional General purpose I/O pin with analog input AIN7 and SPI0 MISO, TCA0 WOD and LUT1-OUT alternate functions.
14 PC2 bidirectional General purpose I/O pin with analog input AIN8, EVOUT2 event output and SPI0 MOSI alternate function.
15 PC3 bidirectional General purpose I/O pin with analog input AIN9 and SPI0 SS, TCA0 WO3 and LUT1-IN0 alternate functions.
16 PA0/RESET/UPDI bidirectional General purpose I/O pin that can be configured as the RESET pin or the single-pin UPDI programming and debug interface via RSTPINCFG.
17 PA1 bidirectional General purpose I/O pin with analog input AIN1 and USART0 TXD, SPI0 MOSI, TWI0 SDA and LUT0-IN1 alternate functions.
18 PA2 bidirectional General purpose I/O pin with analog input AIN2, EVOUT0 event output and USART0 RXD, SPI0 MISO, TWI0 SCL alternate functions.
19 PA3 bidirectional General purpose I/O pin that also serves as EXTCLK external clock input with analog input AIN3 and SPI0 SCK and TCA0 WO3 alternate functions.
20 GND power_in Ground reference pin for the device.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-20-300mil
Category Embedded Processors & Controllers
Pins 20

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 (ATtiny1616-SNR, 20 MHz grade) 1.8 5.5 V 566
Operating temperature range (ATtiny1616-SNR) -40 105 °C 566

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: ATTINY1616-SNR
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: attiny1616-snr-etched.step / attiny1616-snr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny1616-snr.step / attiny1616-snr.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (598 pp, sha256 382df42b05acd53e, 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