| Document | 
                                - Added
                                        ATtiny814 Automotive to the data sheet
 - Added 20-pin SOIC to ATtiny416 and ATtiny816 Automotive
 - Editorial
                                        updates
  
                             | 
| Device | 
                                - Changed
                                        introduction text to align with all tinyAVR® 0- and 1-series data
                                        sheets
 - Retention
                                        endurance numbers updated
 - Data Sheet
                                        Clarification Document chapter added 
 - Ordering
                                        Information moved 
 - I/O
                                        Multiplexing and Considerations updated
 - Overview updated with all automotive devices
  
                             | 
| Configuration and User Fuses | 
                                - Missing RSTPINCFG bit added
 - RSTPINCFG:
                                        Time-out after system reset when fused to be GPIO
                                        explained
  
                             | 
| PORTMUX | 
                                - Updated with missing information
  
                             | 
| BOD - Brown-out Detector | 
                                - Removed
                                        levels not characterized by minimum and maximum values
 - Added a note
                                        for typical values and reference to electrical
                                        characteristics
  
                             | 
| TCA | 
                                - Added a note
                                        for alternative WOn pins
  
                             | 
| USART | 
                                - Clarified
                                        One-Wire mode
 - Clarified
                                        text about Disabling the Transmitter 
 - Reverted 32±6 to 16±3 baud samples in RXMODE bits in
                                        CTRLB
  
                             | 
| SPI | 
                                - Clarified functionality for SPI SS pin
  
                             | 
| CRCSCAN | 
                                - Added a
                                        missing MODE bit field
  
                             | 
| UPDI | 
                                - GPIO
                                        functionality disabled for a period after a system reset,
                                        changed from ms to clock cycles
  
                             | 
| Electrical Characteristics | 
                                - Added a note
                                        for Chip Erase in General Operating Ratings
  
                             | 
|  Errata | 
                                
                             | 
| Ordering Information | 
                                - Updated with product page links and ordering codes
  
                             | 
| Product Identification System | 
                                - Updated with Tube and Tray packing media
  
                             | 
| Package Drawings | 
                                - Updated
                                        package drawings to Microchip standard
  
                             |