Part Datasheet Review

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Part Information Review: ATTINY1616-SNR

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Date: 2026-07-13 Reviewed available Flux part information for ATTINY1616-SNR: MPN, manufacturer, package/case metadata, terminal count, desc...

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Completed the part review and documented the full findings in Part Information Review: ATTINY1616-SNR.
Open items:
  • Critical mismatch: Package or Case Code says 8-SOIC, but the datasheet, symbol, and footprint are all 20-pin SOIC300 / SRJ.
  • Description says 85C, but ATTINY1616-SNR is -40°C to +105°C.
  • Pin names/numbers match the datasheet, but pin types/descriptions are mostly missing or unspecified.
Suggested next steps:
  1. Correct the package metadata to 20-SOIC300 (SRJ) or equivalent.
  2. Update the description to include 16 KB Flash, 1.8–5.5 V, and -40°C to +105°C.
  3. Populate pin types and pin descriptions from the datasheet.
Fix metadata and validate
Correct package metadata
Improve part description
Populate pin details
Run final review

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Part Information Review: ATTINY1616-SNR
Date: 2026-07-13
Scope
Reviewed available Flux part information for ATTINY1616-SNR: MPN, manufacturer, package/case metadata, terminal count, description, project properties, schematic terminals, footprint, and datasheet-derived specifications.
Sources
  • Existing Flux Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/59ed704f92d22fccc51287554adf6b79ba4a2c7fd38cbe3f449ec8e76678b8f4.pdf
  • Official Microchip product page found during review: https://www.microchip.com/en-us/product/ATTINY1616
  • Official Microchip direct PDF found during review: https://ww1.microchip.com/downloads/en/DeviceDoc/ATtiny3216_ATtiny1616-data-sheet-40001997.pdf
Note: A Datasheet URL was already present, so no Datasheet property update was required by the user instruction. The existing PDF appears to be a Microchip ATtiny3216/ATtiny1616 datasheet copy and contains ordering/package data for ATTINY1616-SNR.
Current Flux Part Metadata

Table

FieldCurrent valueReview result
Project / part nameATTINY1616-SNRMatches MPN
Manufacturer Part NumberATTINY1616-SNRMatches datasheet ordering code
Manufacturer NameMicrochipMatches datasheet
Description8-bit Microcontrollers - MCU 20MHZ SOIC 85C GRNPartially misleading: 85C conflicts with SNR ordering info showing -40°C to +105°C; 20MHz should be voltage-qualified
Part TypeIntegrated CircuitsAcceptable, though Microcontroller would be more specific
Designator PrefixICAcceptable
Terminal count / Pads20Matches datasheet SOIC-20
Package or Case Code8-SOICMismatch: should be 20-pin SOIC300 / SRJ, not 8-SOIC
Datasheet URLSet to uploaded Microchip datasheet copyPresent; official Microchip direct PDF also found
Key Datasheet Specs for ATTINY1616-SNR

Table

SpecDatasheet value
Device familytinyAVR 1-series 8-bit AVR microcontroller
Flash16 KB
SRAM2 KB
EEPROM256 bytes
Max CPU frequency20 MHz, only at VDD = 4.5 V to 5.5 V
Speed grades0-5 MHz @ 1.8-5.5 V; 0-10 MHz @ 2.7-5.5 V; 0-20 MHz @ 4.5-5.5 V
Operating supply1.8 V to 5.5 V
Absolute max VDD-0.5 V to 6 V
Temperature grade for SNRIndustrial, -40°C to +105°C
PackageSOIC300, Microchip/Atmel package code SRJ
Leads20
CarrierTape & Reel
Typical active current10.2 mA at 20 MHz, VDD = 5 V; 3.1 mA at 10 MHz, VDD = 3 V
Low-power currentPower-down/standby with peripherals stopped: typ. 0.1 µA at VDD = 3 V
Thermal resistance, SOIC300θJA = 44 °C/W, θJC = 21 °C/W
Schematic Symbol / Terminal Cross-Check
The schematic is built from 20 terminal components. Pin numbers and names match the datasheet SOIC-20 pinout.

Table

PinFlux terminalDatasheet SOIC-20 functionResult
1VDDVDDMatch
2PA4PA4Match
3PA5PA5Match
4PA6PA6Match
5PA7PA7Match
6PB5PB5Match
7PB4PB4Match
8TOSC1/PB3PB3 / TOSC1Match
9TOSC2/PB2PB2 / TOSC2Match
10PB1PB1Match
11PB0PB0Match
12PC0PC0Match
13PC1PC1Match
14PC2PC2Match
15PC3PC3Match
16PA0/RESET/UPDIPA0 / RESET / UPDIMatch
17PA1PA1Match
18PA2PA2Match
19PA3/EXTCLKPA3 / EXTCLKMatch
20GNDGNDMatch
Symbol / Pin Metadata Issues
  • All terminal Pin Type values are Unspecified; VDD should be power input, GND should be ground, PAx/PBx/PCx should be bidirectional/digital or programmable I/O, reset/UPDI should carry a more specific role.
  • Terminal Pin Description fields are absent. Datasheet-derived descriptions / alternate functions are not populated.
  • Pin groups/sections are not populated; grouping by Power, Ground, Port A, Port B, Port C, Clock/Programming would make the symbol easier to review.
Footprint Cross-Check
Flux footprint asset: SOIC127P1030X265-20N.kicad_mod
Relevant footprint features observed:
  • 20 SMD pads.
  • 1.27 mm pitch.
  • 7.50 mm x 12.80 mm body outline in the fab layer.
  • 10.30 mm overall package width implied by the footprint naming and pad span.
  • 2.65 mm nominal/max height in footprint naming.
  • Pad size: 0.65 mm x 1.85 mm.
  • Pin 1 orientation/chamfer marker present.
Datasheet package data for ATTINY1616-SNR:
  • SOIC300 / SRJ, 20 leads.
  • Pitch: 1.27 mm BSC.
  • Molded package width: 7.50 mm BSC.
  • Overall length: 12.80 mm BSC.
  • Overall width: 10.30 mm BSC.
  • Overall height: 2.35 mm min, 2.50 mm nominal, 2.65 mm max.
Result: Footprint geometry appears consistent with the datasheet SOIC300 / SRJ package. The footprint is not the problem; the package/case metadata is.
Mismatches / Issues to Flag
  1. Critical metadata mismatch: Package or Case Code is 8-SOIC but the part is 20-pin SOIC300 / SRJ.
    • Evidence: datasheet ordering code for ATTINY1616-SNR shows 20 leads, SOIC300 (SRJ); schematic has 20 pins; footprint is SOIC127P1030X265-20N.
    • Recommended correction: 20-SOIC300 (SRJ) or SOIC-20, 0.300 in body.
  2. Description says 85C, but the SNR ordering code is -40°C to +105°C.
    • Recommended correction: replace 85C with 105C or -40°C to +105°C.
  3. Description says 20MHZ without voltage condition.
    • Not strictly wrong, but should be qualified: 20 MHz is only guaranteed at 4.5 V to 5.5 V; lower VDD has lower max frequency.
  4. Pin metadata is incomplete.
    • Pin numbers/names are correct, but Pin Type is Unspecified for all terminals and Pin Description fields are missing.
  5. Part type/subtype metadata is too generic / possibly stale.
    • Library search reports Integrated Circuits / Logic with logic function AND, which is inappropriate for a microcontroller. Recommended: Part Type Microcontroller if available; remove/avoid Logic Function: AND style metadata.
Review Outcome
Do not approve the part metadata as-is. The schematic pin mapping and footprint appear correct, but the metadata has a critical package/case error and the description/pin metadata should be cleaned up before relying on this part in production designs.

  • Scope

  • Sources

  • Current Flux Part Metadata

  • Key Datasheet Specs for ATTINY1616-SNR

  • Schematic Symbol / Terminal Cross-Check

  • Symbol / Pin Metadata Issues

  • Footprint Cross-Check

  • Mismatches / Issues to Flag

  • Review Outcome

Documents

Assets

ATTINY1616-SNR

ATTINY1616-SNR

ATTINY1616-SNR.stp3D Model
kicad_mod

ATTINY1616-SNR

SOIC127P1030X265-20N.kicad_modFootprint
ATtiny1616-SNR-thumb.png

ATtiny1616-SNR-thumb.png

ATtiny1616-SNR-thumbThumbnail
svg

ATTINY1616-SNR

ATTINY1616-SNR Symbol.svgDefault

ATTINY1616-SNR

ATTINY1616-SNR thumbnail
AVR tinyAVR™ 1, Functional Safety (FuSa) Microcontroller IC 8-Bit 20MHz 16KB (16K x 8) FLASH 20-SOIC
8-bit AVR Microcontroller with 16KB Flash memory, 2KB SRAM, and 256B EEPROM, operating at up to 20 MHz. Features include configurable custom logic (CCL), 10-bit ADC, USART, SPI, I²C interfaces, and operates from a 1.8V to 5.5V supply. Available in an SOIC-8 package.
#Microcontroller #AVR #ATtiny1616 #8bitMCU #EmbeddedController #SOIC8

Properties

ATTINY1616-SNR

Microchip

Integrated Circuits

microchip.com/downloads/en/DeviceDoc/ATtiny1614-16-17-DataSheet-DS40002204A.pdf

IC

20-SOIC300 (SRJ)

parametric-v1

creativecommons.org/licenses/by/4.0/

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