ATTINY85V-10MU (QFN-20(4x4)) — Schematic Symbol, IPC-7351B Footprint & 3D STEP Model

Q: What is the Pinout and operating voltage specification of ATTINY85V-10MU (QFN-20(4x4))?

Manufactured by MICROCHIP, the ATTINY85V-10MU is housed in a QFN-20(4x4) package with 21 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 1.8V - 2.4V. Key pins include: 1 (IO1: General Purpose Digital I/O Pin IO1), 2 (IO2: General Purpose Digital I/O Pin IO2), 3 (DNC: Multiplexed I/O & Peripheral Pin DNC (General)), 4 (DNC: Multiplexed I/O & Peripheral Pin DNC (General)), 5 (IO2: GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1), 6 (DNC: Multiplexed I/O & Peripheral Pin DNC (General)).

Q: What are the IPC-7351B PCB Footprint dimensions for ATTINY85V-10MU?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ATTINY85V-10MU (QFN-20(4x4)) has a nominal body envelope of 4.00 × 4.00 mm, pitch e = 0.50 mm, and 21 copper pads plus a central exposed thermal pad (EPAD) of 2.50 × 2.50 mm with a 60% IPC-7525 windowed solder paste grid.

Q: Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ATTINY85V-10MU?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ATTINY85V-10MU (MICROCHIP, QFN-20(4x4)) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.

1. SYMBOL

2. 2D FOOTPRINT

3. 3D CAD MODEL

Package Body: 4.00mm × 4.00mm · Pitch: 0.50mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (21/21)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D

Pin	Symbol	Type	Function (EN)
1	IO1	I/O	General Purpose Digital I/O Pin IO1
2	IO2	I/O	General Purpose Digital I/O Pin IO2
3	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
4	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
5	IO2	I/O	GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1
6	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
7	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
8	GND	GND	Ground Reference Pin (GND)
9	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
10	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
11	IO6	I/O	GPIO6 / RTC_GPIO6 / TOUCH6 / ADC1_CH5
12	IO7	I/O	GPIO7 / RTC_GPIO7 / TOUCH7 / ADC1_CH6
13	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
14	IO16	I/O	GPIO16 / RTC_GPIO16 / U0CTS / ADC2_CH5 / XTAL_32K_N
15	VCC	Power	Power Supply Input (VCC — 1.8V - 2.4V)
16	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
17	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
18	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
19	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
20	DNC	I/O	Multiplexed I/O & Peripheral Pin DNC (General)
21	EP	GND	Exposed Thermal & Ground Pad (EP)

PIN 1 IO1

I/O

General Purpose Digital I/O Pin IO1

Design note: 3.3V logic domain (3.6V absolute max), 40mA max drive current.

IPC-7351B Solder Density & Span C/G/Z Tuner

Extracted Drawings Gallery (6 Standard Drawings + 11 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen

1. Realistic 3D PackageREPRESENTATIVE

ATTINY85V-10MU (QFN-20(4x4)) - 1. Realistic 3D Package

Detailed solid 3D bodyExpand ›

2. Standard Pinout (Top View)CLEANROOM PINOUT

ATTINY85V-10MU (QFN-20(4x4)) - 2. Standard Pinout (Top View)

True package pinout (21 pins)Expand ›

3. Original Datasheet PinoutPDF PINOUT

ATTINY85V-10MU (QFN-20(4x4)) - 3. Original Datasheet Pinout

Uncropped datasheet pin diagramExpand ›

4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS

ATTINY85V-10MU (QFN-20(4x4)) - 4. Package Dimensions (D×E×A)

QFN-20(4x4) · 4.00×4.00mm · Pitch 0.50mmExpand ›

5. Recommended Land PatternLAND PATTERN

ATTINY85V-10MU (QFN-20(4x4)) - 5. Recommended Land Pattern

IPC-7351B Footprint (21 Pads)Expand ›

6. Application SchematicSCHEMATIC

ATTINY85V-10MU (QFN-20(4x4)) - 6. Application Schematic

Typical Application SchematicExpand ›

Original Datasheet Pinouts & Technical Drawings (11 figures · Page 1/1)

Showing 1–11 of 11 uncropped original figures for ATTINY85V / ATTINY85

P2 · p02_fig011727×1242px

Figure 1-1. Pinout ATtiny25/45/85

P2 · p02_fig01P2

Datasheet Page 2 (p02_fig01)

P55 · p55_fig011213×671px

Figure 10-3. Synchronization when Reading an Externally Applied Pin value

P65 · p65_fig011565×1320px

Figure 11-1. 8-bit Timer/Counter Block Diagram

P85 · p85_fig011593×1287px

Figure 12-3. Timer/Counter1 Block Diagram

P97 · p97_fig011596×1295px

Figure 13-3. Timer/Counter1 Block Diagram

P211 · p211_fig012012×2175px

26.5 20M1

P211 · p211_fig01P211

Datasheet Page 211 (p211_fig01)

P207 · p207_fig01All Packages in PDF

207 ATtiny25/45/85 [DATASHEET]

P208 · p208_fig01EXACT PACKAGE

26.2 8S2 [SOIC-8-208mil]

P209 · p209_fig01EXACT PACKAGE

26.3 S8S1 [SOIC-8-208mil]

Technical Specifications & Part Details (ATTINY85V-10MU)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)

Standard Electronic & Interconnect Component

Detailed Overview:ATTINY85V-10MU (QFN-20(4x4)) is a 20-pin standard electronic & interconnect component featuring a 4.00 × 4.00 × 0.80 mm mechanical envelope (lead pitch e = 0.50 mm). Rated for 1.8V - 2.4V supply operation across -65°C to +150°C with integrated SPI, I2C, ADC, PWM, RTC/CLK interfaces.

Operating Supply VoltageV_CC / V_DD

1.8V - 2.4V

Place 100nF + 10µF X7R decoupling capacitors < 2mm from supply pins

Ambient Operating TemperatureT_A

-65°C to +150°C

Industrial temperature grade; T_J(max) = +125°C

Clock / RF Operating Frequencyf_CLK / f_RF

4 MHz

Extracted from authoritative PDF specification tables

Current & Power RatingI_OUT / I_CC

I_GPIO(max) = ±20 mA / pin | I_VDD(total) ≤ 150 mA

Observe per-pin absolute maximum current limits

Package Envelope (D × E × A)D × E × A

4.00 × 4.00 × 0.80 mm (A1=0.03 mm)

Package family: QFN (QFN-20(4x4))

Pin Count & Lead PitchN / e

20 Pins | Pitch e = 0.50 mm (19.7 mil)

Normalized to Center-to-Center Span C per IPC-7351B

Integrated Peripheral InterfacesBuses

SPI, I2C, ADC, PWM, RTC/CLK

Cross-linked with 4D Pinout & Schematic Symbol

Reflow & Moisture SensitivityIPC / MSL

IPC-7351B Level B | J-STD-020 (Peak 260°C) | MSL-3

60% windowed solder paste stencil on thermal EPAD

Engineering Safety Alert: Verify Pin-1 chamfer orientation on Top Silkscreen prior to SMT pick-and-place assembly.

Engineering Safety Alert: Connect exposed thermal pad (if present) to internal ground plane via 0.3mm stitched thermal vias.

5-Point Standards Verification

Automated compliance checks prior to export

5/5 PASS

IEEE-315 Symbol21 auto-grouped pins

IPC-7351B Land Pattern21 pads · Pitch 0.50mm

IPC-7525 60% Solder PasteEPAD 2.50×2.50mm windowed grid

DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm

3D STEP AP214 & GLBAligned coordinate origin (0,0,0)

Hardware Verification & Community Engineering Reviews

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet

5.00 PCB Verified

IPC-7351B

Family Variants & Same Datasheet Chips — ATTINY85V / ATTINY85 (2)

Select package variant or sibling MPN sharing this datasheet

SOIC-8-208mil · 8P

ATTINY85-20SU

MICROCHIP·SOIC-8-208mil

IPC-7351B

8P5.3×5.3×1.90mmP=1.27mm

ATTINY85V / ATTINY85 (SOIC-8-208mil)

QFN-20(4x4) · 21P

ATTINY85V-10MU

MICROCHIP·QFN-20(4x4)

IPC-7351B

21P4.0×4.0×0.80mmP=0.5mm

ATTINY85V / ATTINY85 (QFN-20(4x4))

Mechanical Dimensions & Land Pattern (QFN-20(4x4))

Extracted from Datasheet & IPC-7351B Normalized

Package Body (D × E)Nominal

4.00 × 4.00 mm

Height (A) & Pitch (e)IPC-7351B

A=0.80mm · e=0.50mm

Pad Size (W × L)Level B

0.28 × 0.80 mm

Pins / Total PadsTopology

21P / 21Pad (QUAD_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives

DFM READY

Designator / Replacement MPN	Value / Package	Function & PCB Layout Rule
N/A BOM	Per application circuit QFN-20(4x4)	Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — ATTINY85V-10MU (QFN-20(4x4))

Quick answers covering Pinout, IPC-7351B Land Pattern dimensions, and CAD export formats

IPC-7351B / IEEE-315

What is the Pinout and operating voltage specification of ATTINY85V-10MU (QFN-20(4x4))?

Manufactured by MICROCHIP, the ATTINY85V-10MU is housed in a QFN-20(4x4) package with 21 pins and a 0.50 mm lead pitch, supporting a VCC supply range of 1.8V - 2.4V. Key pins include: 1 (IO1: General Purpose Digital I/O Pin IO1), 2 (IO2: General Purpose Digital I/O Pin IO2), 3 (DNC: Multiplexed I/O & Peripheral Pin DNC (General)), 4 (DNC: Multiplexed I/O & Peripheral Pin DNC (General)), 5 (IO2: GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1), 6 (DNC: Multiplexed I/O & Peripheral Pin DNC (General)).

What are the IPC-7351B PCB Footprint dimensions for ATTINY85V-10MU?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ATTINY85V-10MU (QFN-20(4x4)) has a nominal body envelope of 4.00 × 4.00 mm, pitch e = 0.50 mm, and 21 copper pads plus a central exposed thermal pad (EPAD) of 2.50 × 2.50 mm with a 60% IPC-7525 windowed solder paste grid.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ATTINY85V-10MU?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ATTINY85V-10MU (MICROCHIP, QFN-20(4x4)) directly on this page, including KiCad 8 Footprints (.kicad_mod), Schematic Symbols (.kicad_sym), Autodesk Fusion 360 / Eagle (.lbr), and 3D STEP AP214 / WebGL GLB models.

Static Reference Appendix: Pinout Table (21 pins) & ATTINY85V / ATTINY85 Family VariantsExpand static table

Pin #	Signal Name	Electrical Type	Functional Description & Design Notes
1	IO1	Digital_IO	General Purpose Digital I/O Pin IO1
2	IO2	Digital_IO	General Purpose Digital I/O Pin IO2
3	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
4	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
5	IO2	Digital_IO	GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1
6	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
7	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
8	GND	GND	0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
9	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
10	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
11	IO6	Digital_IO	GPIO6 / RTC_GPIO6 / TOUCH6 / ADC1_CH5
12	IO7	Digital_IO	GPIO7 / RTC_GPIO7 / TOUCH7 / ADC1_CH6
13	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
14	IO16	Digital_IO	GPIO16 / RTC_GPIO16 / U0CTS / ADC2_CH5 / XTAL_32K_N
15	VCC	Power_In	Primary positive power supply input (VCC) operating in the 1.8V - 2.4V domain (Max rating: 2.4V).
16	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
17	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
18	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
19	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
20	DNC	NC	Signal terminal DNC (I/O, 1.8V - 2.4V domain). Multiplexed alternate functions: DNC. Supported peripheral buses: General.
21	EP	GND	Bottom exposed die attach pad (EP) providing primary thermal conduction path to the PCB and low-inductance 0V ground return.

4D Studio: ATTINY85V-10MU Permalink: /part/C220657 MICROCHIP QFN-20(4x4)All Packages All Manufacturers