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ATTINY1616-SNR
Public Made by Adomby adom
Microchip Tech Pre-ordered MCUs, SOIC-20-300mil. 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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Contents
README
markdownATTINY1616-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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny1616-snr.step/attiny1616-snr.glbare 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, primaryclaude-haiku-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).