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ATTINY1616-SN

Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · SOIC-20-300mil

ATTINY1616-SN 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 Positive supply input, operating range 1.8 V to 5.5 V.
2 PA4 bidirectional PORTA pin 4 GPIO; ADC0 AIN4, ADC1 AIN0, PTC X0/Y0, TCA0 WO4, TCD0 WOA, CCL LUT0-OUT, SPI SS, alternate USART XDIR.
3 PA5 bidirectional PORTA pin 5 GPIO; VREFA external reference input, ADC0 AIN5, ADC1 AIN1, PTC X1/Y1, AC0 OUT, AC0 AINN0, TCA0 WO5, TCB0 WO, TCD0 WOB.
4 PA6 bidirectional PORTA pin 6 GPIO; ADC0 AIN6, ADC1 AIN2, PTC X2/Y2, DAC0 OUT, AC0 AINN0, AC1 AINP1, AC2 AINP0; fully asynchronous pin-change sensing.
5 PA7 bidirectional PORTA pin 7 GPIO; ADC0 AIN7, ADC1 AIN3, PTC X3/Y3, AC0 AINP0, AC1 AINP0, AC2 AINN0, CCL LUT1-OUT.
6 PB5 bidirectional PORTB pin 5 GPIO; CLKOUT, ADC1 AIN8, PTC X12/Y12, AC0 AINP1, AC2 AINP2, alternate TCA0 WO2.
7 PB4 bidirectional PORTB pin 4 GPIO; ADC1 AIN9, PTC X13/Y13, AC0 AINN1, AC1 AINP3, alternate TCA0 WO1 and CCL LUT0-OUT.
8 PB3 bidirectional PORTB pin 3 GPIO; TOSC1 32.768 kHz crystal pin, USART0 RxD, alternate TCA0 WO0.
9 PB2 bidirectional PORTB pin 2 GPIO; TOSC2 32.768 kHz crystal pin, EVOUT1, USART0 TxD, TCA0 WO2.
10 PB1 bidirectional PORTB pin 1 GPIO; ADC1 AIN10, PTC X4/Y4, AC2 AINP2, USART0 XCK, TWI SDA, TCA0 WO1.
11 PB0 bidirectional PORTB pin 0 GPIO; ADC1 AIN11, PTC X5/Y5, AC2 AINP2, AC1 AINP1, USART0 XDIR, TWI SCL, TCA0 WO0.
12 PC0 bidirectional PORTC pin 0 GPIO; ADC1 AIN6, PTC X6/Y6, TCD0 WOC, alternate SPI SCK and TCB0 WO.
13 PC1 bidirectional PORTC pin 1 GPIO; ADC1 AIN7, PTC X7/Y7, TCD0 WOD, alternate SPI MISO and CCL LUT1-OUT.
14 PC2 bidirectional PORTC pin 2 GPIO; EVOUT2, ADC1 AIN8, PTC X8/Y8, alternate SPI MOSI; fully asynchronous pin-change sensing.
15 PC3 bidirectional PORTC pin 3 GPIO; ADC1 AIN9, PTC X9/Y9, CCL LUT1-IN0, alternate SPI SS and TCA0 WO3.
16 PA0/RESET/UPDI bidirectional PORTA pin 0 GPIO, or RESET input, or single-pin UPDI programming/debug interface, selected by the RSTPINCFG fuse; also ADC0 AIN0 and CCL LUT0-IN0.
17 PA1 bidirectional PORTA pin 1 GPIO; ADC0 AIN1, SPI MOSI, CCL LUT0-IN1, alternate USART0 TxD and TWI SDA.
18 PA2 bidirectional PORTA pin 2 GPIO; EVOUT0, ADC0 AIN2, SPI MISO, CCL LUT0-IN2, alternate USART0 RxD and TWI SCL; fully asynchronous pin-change sensing.
19 PA3/EXTCLK bidirectional PORTA pin 3 GPIO or external clock input EXTCLK; ADC0 AIN3, SPI SCK, TCA0 WO3, TCB1 WO, alternate USART0 XCK.
20 GND power_in Ground.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-20-300mil
Category Single Chip Microcomputer/Microcontroller
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 VDD 1.8 5.5 V ATtiny1616-SN ordering table 566
Operating temperature range -40 105 °C Temperature range N 566
Maximum CPU speed 20 MHz Ordering table, Max. CPU Speed 566
Flash write/erase endurance 10000 cycles 1
EEPROM write/erase endurance 100000 cycles 1
Data retention 40 years at 55°C 1
BOD level 0 threshold BODLEVEL0 1.8 V Typical value; min/max in BOD and POR Characteristics 36
BOD level 2 threshold BODLEVEL2 2.6 V Typical value; min/max in BOD and POR Characteristics 36
BOD level 7 threshold BODLEVEL7 4.2 V Typical value; min/max in BOD and POR Characteristics 36

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-SN
  • Footprint: Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm
  • 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
  • 3D model files: attiny1616-sn-etched.step / attiny1616-sn-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); attiny1616-sn.step / attiny1616-sn.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 2026-10-26, 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