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ATTINY816-MN
Public Made by Adomby adom
Microchip Tech Microcontroller Units (MCUs/MPUs/SOCs), QFN-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-MN
Microchip Tech · Microcontroller Units (MCUs/MPUs/SOCs) · QFN-20-EP(3x3)
ATTINY816-MN from Microchip Tech, in a QFN-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 | PA2 is a PORTA I/O pin with alternate functions EVOUT0, AIN2, RxD, MISO, SCL and LUT0-IN2, and can be used as an event input and external interrupt source. |
| 2 | PA3 | bidirectional | PA3 is a PORTA I/O pin with alternate functions EXTCLK (external clock input), AIN3, XCK, SCK and WO3. |
| 3 | GND | power_in | Ground reference pin for the device. |
| 4 | VDD | power_in | Power supply pin; operating supply voltage is 1.8 V to 5.5 V (Table 36-2). |
| 5 | PA4 | bidirectional | PA4 is a PORTA I/O pin with alternate functions AIN4, PTC X0/Y0, XDIR, SS, WO4, WOA and LUT0-OUT. |
| 6 | PA5 | bidirectional | PA5 is a PORTA I/O pin with alternate functions AIN5, PTC X1/Y1, OUT, WO5, WO and WOB. |
| 7 | PA6 | bidirectional | PA6 is a PORTA I/O pin with alternate functions AIN6, PTC X2/Y2, AINN0, OUT and the DAC0 output. |
| 8 | PA7 | bidirectional | PA7 is a PORTA I/O pin with alternate functions AIN7, PTC X3/Y3, AINP0 and LUT1-OUT. |
| 9 | PB5 | bidirectional | PB5 is a PORTB I/O pin with alternate functions CLKOUT, AIN8, AINP1 and WO2 (alternate position). |
| 10 | PB4 | bidirectional | PB4 is a PORTB I/O pin with alternate functions AIN9, AINN1, WO1 (alternate position) and LUT0-OUT (alternate position). |
| 11 | PB3 | bidirectional | PB3 is a PORTB I/O pin with alternate functions TOSC1 (32.768 kHz crystal oscillator input), RxD and WO0 (alternate position). |
| 12 | PB2 | bidirectional | PB2 is a PORTB I/O pin with alternate functions TOSC2 (32.768 kHz crystal oscillator output), EVOUT1, TxD and WO2. |
| 13 | PB1 | bidirectional | PB1 is a PORTB I/O pin with alternate functions AIN10, PTC X4/Y4, XCK, SDA and WO1. |
| 14 | PB0 | bidirectional | PB0 is a PORTB I/O pin with alternate functions AIN11, PTC X5/Y5, XDIR, SCL and WO0. |
| 15 | PC0 | bidirectional | PC0 is a PORTC I/O pin with alternate functions SCK, WO and WOC (alternate positions). |
| 16 | PC1 | bidirectional | PC1 is a PORTC I/O pin with alternate functions MISO, WOD and LUT1-OUT (alternate positions). |
| 17 | PC2 | bidirectional | PC2 is a PORTC I/O pin with alternate functions EVOUT2 and MOSI (alternate position). |
| 18 | PC3 | bidirectional | PC3 is a PORTC I/O pin with alternate functions SS, WO3 (alternate positions) and LUT1-IN0. |
| 19 | PA0 | bidirectional | PA0 is shared with the RESET/UPDI pin, whose function is selected by the RSTPINCFG fuse (GPIO, UPDI or RESET), and also carries AIN0 and LUT0-IN0. |
| 20 | PA1 | bidirectional | PA1 is a PORTA I/O pin with alternate functions AIN1, TxD (alternate position), MOSI, SDA (alternate position) and LUT0-IN1. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | QFN-20-EP(3x3) |
| Category | Single Chip Microcomputer/Microcontroller |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | 1.8 | 5.5 | V | ATtiny816-MN (VQFN, 20 MHz), ordering information table | 560 | ||
| Temperature range | -40 | 105 | °C | ATtiny816-MN (VQFN, 20 MHz), ordering information table | 560 | ||
| Max. CPU speed | 20 | MHz | ATtiny816-MN (VQFN, 1.8V-5.5V), ordering information table | 560 |
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:
ATTINY816-MN - Footprint:
Package_DFN_QFN:QFN-20-1EP_3x3mm_P0.4mm_EP1.65x1.65mm - 3D model: QFN-20-EP(3x3), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.9 mm nominal QFN height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
attiny816-mn-etched.step/attiny816-mn-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);attiny816-mn.step/attiny816-mn.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (596 pp, sha256
c2392fe1c4c9666a, retrieved 2026-11-05, 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).