component
ATTINY816-MFR
Public Made by Adomby adom
Microchip Tech MICROCHIP, WQFN-20-EP(3x3). 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
markdownATTINY816-MFR
Microchip Tech · MICROCHIP · WQFN-20-EP(3x3)
ATTINY816-MFR from Microchip Tech, in a WQFN-20-EP(3x3). 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 | PA2 | bidirectional | GPIO PA2 with EVOUT0, ADC input AIN2, USART0 RxD, SPI0 MISO, TWI0 SCL and LUT0-IN2 functions. |
| 2 | PA3 | bidirectional | GPIO PA3 with EXTCLK external clock input, ADC input AIN3, USART0 XCK, SPI0 SCK and TCA0 WO3 functions. |
| 3 | GND | power_in | Ground. |
| 4 | VDD | power_in | Power supply input, 1.8V to 5.5V operating range. |
| 5 | PA4 | bidirectional | GPIO PA4 with ADC input AIN4, PTC X0/Y0, USART0 XDIR, SPI0 SS, TCA0 WO4, TCD0 WOA and LUT0-OUT functions. |
| 6 | PA5 | bidirectional | GPIO PA5 with ADC input AIN5, PTC X1/Y1, OUT, TCA0 WO5, TCB0 WO and TCD0 WOB functions. |
| 7 | PA6 | bidirectional | GPIO PA6 with ADC input AIN6, PTC X2/Y2, analog comparator input AINN0 and DAC0 OUT analog output functions. |
| 8 | PA7 | bidirectional | GPIO PA7 with ADC input AIN7, PTC X3/Y3, analog comparator input AINP0 and LUT1-OUT functions. |
| 9 | PB5 | bidirectional | GPIO PB5 with CLKOUT, ADC input AIN8, analog comparator input AINP1 and TCA0 WO2 functions. |
| 10 | PB4 | bidirectional | GPIO PB4 with ADC input AIN9, analog comparator input AINN1, TCA0 WO1 and LUT0-OUT functions. |
| 11 | PB3 | bidirectional | GPIO PB3 with TOSC1 32.768kHz crystal pin, USART0 RxD and TCA0 WO0 functions. |
| 12 | PB2 | bidirectional | GPIO PB2 with TOSC2 32.768kHz crystal pin, EVOUT1, USART0 TxD and TCA0 WO2 functions. |
| 13 | PB1 | bidirectional | GPIO PB1 with ADC input AIN10, PTC X4/Y4, USART0 XCK, TWI0 SDA and TCA0 WO1 functions. |
| 14 | PB0 | bidirectional | GPIO PB0 with ADC input AIN11, PTC X5/Y5, USART0 XDIR, TWI0 SCL and TCA0 WO0 functions. |
| 15 | PC0 | bidirectional | GPIO PC0 with SPI0 SCK, TCB0 WO and TCD0 WOC functions. |
| 16 | PC1 | bidirectional | GPIO PC1 with SPI0 MISO, TCD0 WOD and LUT1-OUT functions. |
| 17 | PC2 | bidirectional | GPIO PC2 with EVOUT2 and SPI0 MOSI functions. |
| 18 | PC3 | bidirectional | GPIO PC3 with SPI0 SS, TCA0 WO3 and LUT1-IN0 functions. |
| 19 | PA0/RESET/UPDI | bidirectional | GPIO PA0 that is configurable via the RSTPINCFG fuse as RESET or the single-pin UPDI programming/debug interface, also ADC input AIN0 and LUT0-IN0. |
| 20 | PA1 | bidirectional | GPIO PA1 with BREAK, ADC input AIN1, USART0 TXD, SPI0 MOSI, TWI0 SDA and LUT0-IN1 functions. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | WQFN-20-EP(3x3) |
| Category | Embedded Processors & Controllers |
| Pins | 21 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Operating supply voltage | VDD | 1.8 | 5.5 | V | Power supply, ATtiny816-MFR ordering table | 12 | |
| Operating temperature | -40 | 125 | °C | Industrial, ATtiny816-MFR | 12 | ||
| Operating frequency at 1.8V-5.5V | 0 | 5 | MHz | 1.8V - 5.5V | 2 | ||
| Operating frequency at 2.7V-5.5V | 0 | 10 | MHz | 2.7V - 5.5V | 2 | ||
| Operating frequency at 4.5V-5.5V | 0 | 20 | MHz | 4.5V - 5.5V | 2 | ||
| Page Write time | Page Write | 2 | ms | Typ. programming time | 438 | ||
| Page Erase time | Page Erase | 2 | ms | Typ. programming time | 438 | ||
| Page Erase-Write time | Page Erase-Write | 4 | ms | Typ. programming time | 438 | ||
| Chip Erase time | Chip Erase | 4 | ms | Typ. programming time | 438 | ||
| EEPROM Erase time | EEPROM Erase | 4 | ms | Typ. programming time | 438 |
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. | 384 |
CAD (KiCad official)
- Symbol:
ATTINY816-MFR - Footprint:
Package_DFN_QFN:UQFN-20-1EP_3x3mm_P0.4mm_EP1.85x1.85mm - 3D model: WQFN-20-EP(3x3) (KiCad packages3D, STEP)
- 3D model files:
attiny816-mfr-etched.step/attiny816-mfr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny816-mfr.step/attiny816-mfr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (500 pp, sha256
8c098cfa6cb00a08, retrieved 2026-10-22, 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).