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ATTINY3216-SF
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
markdownATTINY3216-SF
Microchip Tech · Pre-ordered MCUs · SOIC-20-300mil
ATTINY3216-SF 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; the device operates from 1.8V to 5.5V (2.7V to 5.5V for the -F 125°C grade). |
| 2 | PA4 | bidirectional | PORTA pin 4 with ADC0 AIN4, ADC1 AIN0, PTC X0/Y0, USART0 XDIR (alt), SPI0 SS, TCA0 WO4, TCD0 WOA and CCL LUT0-OUT. |
| 3 | PA5 | bidirectional | PORTA pin 5 with external reference VREFA, ADC0 AIN5, ADC1 AIN1, PTC X1/Y1, TCA0 WO5, TCB0 WO and TCD0 WOB. |
| 4 | PA6 | bidirectional | PORTA pin 6 with ADC0 AIN6, ADC1 AIN2, PTC X2/Y2, analog comparator inputs and DAC0 OUT. |
| 5 | PA7 | bidirectional | PORTA pin 7 with ADC0 AIN7, ADC1 AIN3, PTC X3/Y3, analog comparator inputs and CCL LUT1-OUT. |
| 6 | PB5 | bidirectional | PORTB pin 5 with CLKOUT, ADC1 AIN8, PTC X12/Y12, analog comparator inputs and TCA0 WO2 (alt). |
| 7 | PB4 | bidirectional | PORTB pin 4 with ADC1 AIN9, PTC X13/Y13, analog comparator inputs, TCA0 WO1 (alt) and LUT0-OUT (alt). |
| 8 | PB3 | bidirectional | PORTB pin 3 / TOSC1 crystal oscillator pin, with USART0 RxD and TCA0 WO0 (alt). |
| 9 | PB2 | bidirectional | PORTB pin 2 / TOSC2 crystal oscillator pin, with EVOUT1, USART0 TxD and TCA0 WO2. |
| 10 | PB1 | bidirectional | PORTB pin 1 with ADC1 AIN10, PTC X4/Y4, USART0 XCK, TWI0 SDA and TCA0 WO1. |
| 11 | PB0 | bidirectional | PORTB pin 0 with ADC1 AIN11, PTC X5/Y5, USART0 XDIR, TWI0 SCL and TCA0 WO0. |
| 12 | PC0 | bidirectional | PORTC pin 0 with ADC1 AIN6, PTC X6/Y6, SPI0 SCK (alt), TCB0 WO (alt) and TCD0 WOC. |
| 13 | PC1 | bidirectional | PORTC pin 1 with ADC1 AIN7, PTC X7/Y7, SPI0 MISO (alt), TCD0 WOD and LUT1-OUT (alt). |
| 14 | PC2 | bidirectional | PORTC pin 2 with EVOUT2, ADC1 AIN8, PTC X8/Y8 and SPI0 MOSI (alt). |
| 15 | PC3 | bidirectional | PORTC pin 3 with ADC1 AIN9, PTC X9/Y9, SPI0 SS (alt), TCA0 WO3 (alt) and CCL LUT1-IN0. |
| 16 | PA0/RESET/UPDI | bidirectional | PORTA pin 0 configurable as GPIO, RESET or the single-pin UPDI programming/debug interface, with ADC0 AIN0 and CCL LUT0-IN0. |
| 17 | PA1 | bidirectional | PORTA pin 1 with ADC0 AIN1, USART0 TxD (alt), SPI0 MOSI, TWI0 SDA (alt) and CCL LUT0-IN1. |
| 18 | PA2 | bidirectional | PORTA pin 2 with EVOUT0, ADC0 AIN2, USART0 RxD (alt), SPI0 MISO, TWI0 SCL (alt) and CCL LUT0-IN2. |
| 19 | PA3/EXTCLK | bidirectional | PORTA pin 3 / external clock input, with ADC0 AIN3, USART0 XCK (alt), SPI0 SCK, TCA0 WO3 and TCB1 WO. |
| 20 | GND | power_in | Ground. |
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 | VDD | 2.7 | 5.5 | V | ATtiny3216-SF ordering option | 565 | |
| Max. CPU speed | 16 | MHz | ATtiny3216-SF ordering option | 565 | |||
| Operating temperature range | -40 | 125 | °C | F = -40°C to +125°C | 565 |
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. | 460 |
CAD (KiCad official)
- Symbol:
ATTINY3216-SF - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
attiny3216-sf-etched.step/attiny3216-sf-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny3216-sf.step/attiny3216-sf.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (588 pp, sha256
552d725ac87bb1f3, retrieved 2026-10-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).