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ATTINY1616-SFR

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Microchip Tech Microcontrollers (MCU/MPU/SOC), SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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ATTINY1616-SFR

Microchip Tech · Microcontrollers (MCU/MPU/SOC) · SOIC-20-300mil

ATTINY1616-SFR 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 Supply pin; the datasheet gives an operating supply range of 1.8 V to 5.5 V (absolute maximum -0.5 V to 6 V).
2 PA4 bidirectional Port A bit 4 I/O, multiplexed with AIN4, AIN0, PTC X0/Y0, USART0 XDIR, SPI0 SS, TCA0 WO4, TCD0 WOA and CCL LUT0-OUT; I/O sink/source current is limited to ±40 mA.
3 PA5 bidirectional Port A bit 5 I/O, multiplexed with VREFA, AIN5, AIN1, PTC X1/Y1, AINN0, TCA0 WO5 and TCB0/TCD0 WOB outputs; I/O sink/source current is limited to ±40 mA.
4 PA6 bidirectional Port A bit 6 I/O, multiplexed with AIN6, AIN2, PTC X2/Y2, AINN0, AINP0 and AINP1 and the analog comparator output; I/O sink/source current is limited to ±40 mA.
5 PA7 bidirectional Port A bit 7 I/O, multiplexed with AIN7, AIN3, PTC X3/Y3, AINP0, AINN0 and CCL LUT1-OUT; I/O sink/source current is limited to ±40 mA.
6 PB5 bidirectional Port B bit 5 I/O, multiplexed with CLKOUT, AIN8, PTC X12/Y12, AINP1, AINP2 and TCA0 WO2; I/O sink/source current is limited to ±40 mA.
7 PB4 bidirectional Port B bit 4 I/O, multiplexed with AIN9, PTC X13/Y13, AINN1, AINP3, TCA0 WO1 and CCL LUT0-OUT; I/O sink/source current is limited to ±40 mA.
8 PB3 bidirectional Port B bit 3 I/O, which is also the 32.768 kHz crystal oscillator input TOSC1 and is multiplexed with USART0 RxD and TCA0 WO0; I/O sink/source current is limited to ±40 mA.
9 PB2 bidirectional Port B bit 2 I/O, which is also the 32.768 kHz crystal oscillator output TOSC2 and is multiplexed with EVOUT1, USART0 TxD and TCA0 WO2; I/O sink/source current is limited to ±40 mA.
10 PB1 bidirectional Port B bit 1 I/O, multiplexed with AIN10, PTC X4/Y4, AINP2, USART0 XCK, TWI0 SDA and TCA0 WO1; I/O sink/source current is limited to ±40 mA.
11 PB0 bidirectional Port B bit 0 I/O, multiplexed with AIN11, PTC X5/Y5, AINP1, AINP2, USART0 XDIR, TWI0 SCL and TCA0 WO0; I/O sink/source current is limited to ±40 mA.
12 PC0 bidirectional Port C bit 0 I/O, multiplexed with AIN6, PTC X6/Y6, SPI0 SCK, TCB0 WO and TCD0 WOC; I/O sink/source current is limited to ±40 mA.
13 PC1 bidirectional Port C bit 1 I/O, multiplexed with AIN7, PTC X7/Y7, SPI0 MISO, TCD0 WOD and CCL LUT1-OUT; I/O sink/source current is limited to ±40 mA.
14 PC2 bidirectional Port C bit 2 I/O, multiplexed with EVOUT2, AIN8, PTC X9/Y8 and SPI0 MOSI; I/O sink/source current is limited to ±40 mA.
15 PC3 bidirectional Port C bit 3 I/O, multiplexed with AIN9, PTC X9/Y9, SPI0 SS, TCA0 WO3 and CCL LUT1-IN0; I/O sink/source current is limited to ±40 mA.
16 PA0/RESET/UPDI bidirectional Port A bit 0 I/O shared with RESET and UPDI, where the function is selected by the RSTPINCFG fuse (GPIO, RESET or UPDI; 0x3 is reserved for lower pin counts), and it is also multiplexed with AIN0 and CCL LUT0-IN0.
17 PA1 bidirectional Port A bit 1 I/O, multiplexed with BREAK, AIN1, USART0 TxD, SPI0 MOSI, TWI0 SDA and CCL LUT0-IN1; I/O sink/source current is limited to ±40 mA.
18 PA2 bidirectional Port A bit 2 I/O, multiplexed with EVOUT0, AIN2, USART0 RxD, SPI0 MISO, TWI0 SCL and CCL LUT0-IN2; I/O sink/source current is limited to ±40 mA.
19 PA3/EXTCLK bidirectional Port A bit 3 I/O, which is also the external clock input EXTCLK and is multiplexed with AIN3, USART0 XCK, SPI0 SCK, TCA0 WO3 and TCB1 WO; I/O sink/source current is limited to ±40 mA.
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
Power supply voltage (operational range, ATtiny1616-SFR) 1.8 5.5 V Industrial -40°C to +125°C (ATtiny1616-SFR ordering code) 12
Speed grade: maximum frequency at 1.8V-5.5V 0 5 MHz VDD 1.8V - 5.5V 2
Speed grade: maximum frequency at 2.7V-5.5V 0 10 MHz VDD 2.7V - 5.5V 2
Speed grade: maximum frequency at 4.5V-5.5V 0 20 MHz VDD 4.5V - 5.5V 2
Operating temperature range (SFR, Industrial) -40 125 °C Industrial grade, ATtiny1616-SFR (-40°C to +125°C) 12

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 configurations, including indium tin oxide (ITO) sensor grids. The PTC requires one pin per X-line and one pin per Y-line. 383

CAD (KiCad official)

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

Provenance

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

  • Datasheet: Microchip Tech datasheet (493 pp, sha256 06e23fa8222e1a74, 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