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ATTINY85-20SU (SOIC-8-208mil) — Symbol, Footprint IPC-7351B & 3D STEP Model

ATTINY85-20SU

MICROCHIPID: C89852SOIC-8-208mil · 8 Pins · Pitch 1.27mmIPC-7351B Verified5.0 (0)
SYNCHRONIZED 4D CROSS-PROBE MODETouch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
1. SYMBOL
U1 · ATTINY85-20SU (SOIC-8-208mil)1IO12IO233V34GND8VCC7NC6IO35IO2Grid Pitch = 2.54mm (IEEE-315)-17.8-12.7-7.6-2.52.57.612.717.810.25.10-5.1-10.2mm
2. 2D FOOTPRINT
12345678E=5.30mm · Pitch e=1.27mmD=5.30mm-6-5-4-3-2-10123456543210-1-2-3-4-5mm
3. 3D CAD MODEL
Package Body: 5.30mm × 5.30mm · Pitch: 1.27mm · Ruler Step: 1.00mmSynced <100ms

Synchronized Pinout (Symbol / 2D / 3D) (8/8)

Touch or hover any pin to highlight concurrently across Symbol, Footprint and 3D
PinSymbolTypeFunction (EN)
1IO1I/OGeneral Purpose Digital I/O Pin IO1
2IO2I/OGeneral Purpose Digital I/O Pin IO2
33V3Power3.3V Main Power Supply Rail (3.0V ~ 3.6V)
4GNDGNDGround Reference Pin (GND)
5IO2I/OGPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1
6IO3I/OGPIO3 / RTC_GPIO3 / TOUCH3 / ADC1_CH2 (JTAG Source Strap)
7NCNCNo Connect (Leave Floating)
8VCCPowerPower Supply Input (VCC — 1.8V - 2.4V)
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

Live Embedded Datasheet PDF & Technical Drawing Gallery (6 Standard Drawings + 10 Extracted Figures)

Read the original datasheet PDF directly or click any drawing to view fullscreen
Open PDF in New Window ↗Read Datasheet PDF (.pdf)
PDF VIEWEROfficial Datasheet Document: ATTINY85-20SU (MICROCHIP · SOIC-8-208mil)
Scroll, search text (Ctrl+F), or expand directly inside the embedded PDF reader below
1. Realistic 3D PackageREPRESENTATIVE
ATTINY85-20SU (SOIC-8-208mil) - 1. Realistic 3D Package
Detailed solid 3D bodyExpand ›
2. Standard Pinout (Top View)CLEANROOM PINOUT
ATTINY85-20SU (SOIC-8-208mil) - 2. Standard Pinout (Top View)
True package pinout (8 pins)Expand ›
3. Original Datasheet PinoutPDF PINOUT
ATTINY85-20SU (SOIC-8-208mil) - 3. Original Datasheet Pinout
Uncropped datasheet pin diagramExpand ›
4. Package Dimensions (D×E×A)PACKAGE DIMENSIONS
ATTINY85-20SU (SOIC-8-208mil) - 4. Package Dimensions (D×E×A)
SOIC-8-208mil · 5.30×5.30mm · Pitch 1.27mmExpand ›
5. Recommended Land PatternLAND PATTERN
ATTINY85-20SU (SOIC-8-208mil) - 5. Recommended Land Pattern
IPC-7351B Footprint (8 Pads)Expand ›
6. Application SchematicSCHEMATIC
ATTINY85-20SU (SOIC-8-208mil) - 6. Application Schematic
Typical Application SchematicExpand ›
Original Datasheet Pinouts & Technical Drawings (10 figures · Page 1/1)
Showing 1–10 of 10 uncropped original figures for ATTINY85
P208 · p208_fig01EXACT PACKAGE
ATTINY85-20SU (SOIC-8-208mil) — 26.2 8S2
26.2 8S2
P209 · p209_fig01EXACT PACKAGE
ATTINY85-20SU (SOIC-8-208mil) — 26.3 S8S1
26.3 S8S1
P2 · p02_fig011594×1145px
ATTINY85-20SU (SOIC-8-208mil) — Figure 1-1. Pinout ATtiny25/45/85
Figure 1-1. Pinout ATtiny25/45/85
P2 · p02_fig01P2
ATTINY85-20SU (SOIC-8-208mil) — Datasheet Page 2 (p02_fig01)
Datasheet Page 2 (p02_fig01)
P55 · p55_fig011120×620px
ATTINY85-20SU (SOIC-8-208mil) — Figure 10-3. Synchronization when Reading an Externally Applied Pin value
Figure 10-3. Synchronization when Reading an Externally Applied Pin value
P65 · p65_fig011445×1219px
ATTINY85-20SU (SOIC-8-208mil) — Figure 11-1. 8-bit Timer/Counter Block Diagram
Figure 11-1. 8-bit Timer/Counter Block Diagram
P85 · p85_fig011470×1189px
ATTINY85-20SU (SOIC-8-208mil) — Figure 12-3. Timer/Counter1 Block Diagram
Figure 12-3. Timer/Counter1 Block Diagram
P97 · p97_fig011474×1195px
ATTINY85-20SU (SOIC-8-208mil) — Figure 13-3. Timer/Counter1 Block Diagram
Figure 13-3. Timer/Counter1 Block Diagram
P208 · p208_fig01P208
ATTINY85-20SU (SOIC-8-208mil) — Datasheet Page 208 (p208_fig01)
Datasheet Page 208 (p208_fig01)
P207 · p207_fig01All Packages in PDF
ATTINY85-20SU (SOIC-8-208mil) — 207 ATtiny25/45/85 [DATASHEET]
207 ATtiny25/45/85 [DATASHEET]

Technical Specifications & Part Details (ATTINY85-20SU)

Summary of electrical parameters, mechanical dimensions, voltage range and peripheral interfaces from Datasheet (EN)
Standard Electronic & Interconnect Component
Detailed Overview:ATTINY85-20SU (SOIC-8-208mil) is a 8-pin standard electronic & interconnect component featuring a 5.30 × 5.30 × 1.90 mm mechanical envelope (lead pitch e = 1.27 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
5.30 × 5.30 × 1.90 mm (A1=0.00 mm)
Package family: SOIC (SOIC-8-208mil)
Pin Count & Lead PitchN / e
8 Pins | Pitch e = 1.27 mm (50.0 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 Symbol8 auto-grouped pins
OK
IPC-7351B Land Pattern8 pads · Pitch 1.27mm
OK
IPC-7525 60% Solder PasteReflow 1:1 Standard
OK
DFM Rules JLCPCB / PCBWayMin pad clearance: 0.25mm
OK
3D STEP AP214 & GLBAligned coordinate origin (0,0,0)
OK

Hardware Verification & Community Engineering Reviews

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

Mechanical Dimensions & Land Pattern (SOIC-8-208mil)

Extracted from Datasheet & IPC-7351B Normalized
mm
Package Body (D × E)Nominal
5.30 × 5.30 mm
Height (A) & Pitch (e)IPC-7351B
A=1.90mm · e=1.27mm
Pad Size (W × L)Level B
0.60 × 1.95 mm
Pins / Total PadsTopology
8P / 8Pad (DUAL_ROW)

Recommended Companion BOM & Drop-In Equivalents

Passive external components per reference schematic and 1:1 pin-compatible alternatives
DFM READY
Designator / Replacement MPNValue / PackageFunction & PCB Layout Rule
N/A
BOM
Per application circuit
SOIC-8-208mil
Size power & signal trace widths for rated load current following IPC-2221 clearance rules.

Technical Frequently Asked Questions (FAQ) — ATTINY85-20SU (SOIC-8-208mil)

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 ATTINY85-20SU (SOIC-8-208mil)?

Manufactured by MICROCHIP, the ATTINY85-20SU is housed in a SOIC-8-208mil package with 8 pins and a 1.27 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 (3V3: 3.3V Main Power Supply Rail (3.0V ~ 3.6V)), 4 (GND: Ground Reference Pin (GND)), 5 (IO2: GPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1), 6 (IO3: GPIO3 / RTC_GPIO3 / TOUCH3 / ADC1_CH2 (JTAG Source Strap)).

What are the IPC-7351B PCB Footprint dimensions for ATTINY85-20SU?

Normalized from the official datasheet mechanical drawing per IPC-7351B (Density Level B Nominal), ATTINY85-20SU (SOIC-8-208mil) has a nominal body envelope of 5.30 × 5.30 mm, pitch e = 1.27 mm, and 8 copper pads.

Where can I download KiCad (.kicad_mod, .kicad_sym), Fusion 360 (.lbr), and 3D STEP models for ATTINY85-20SU?

You can download the verified open-hardware (CERN-OHL-P-2.0) CAD library bundle for ATTINY85-20SU (MICROCHIP, SOIC-8-208mil) 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 (8 pins) & ATTINY85 Family VariantsExpand static table
Pin #Signal NameElectrical TypeFunctional Description & Design Notes
1IO1Digital_IOGeneral Purpose Digital I/O Pin IO1
2IO2Digital_IOGeneral Purpose Digital I/O Pin IO2
33V3Power_In3.3V Main Power Supply Rail (3.0V ~ 3.6V)
4GNDGND0V electrical ground return terminal (GND) for internal core logic, I/O drivers, and analog sub-blocks.
5IO2Digital_IOGPIO2 / RTC_GPIO2 / TOUCH2 / ADC1_CH1
6IO3Digital_IOGPIO3 / RTC_GPIO3 / TOUCH3 / ADC1_CH2 (JTAG Source Strap)
7NCNo_ConnectNo Connect (Leave Floating)
8VCCPower_InPrimary positive power supply input (VCC) operating in the 1.8V - 2.4V domain (Max rating: 2.4V).
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