ATtiny804/806/807/1604/1606/
1607
Silicon Errata and Data Sheet Clarification
The ATtiny804/806/807/1604/1606/1607 devices you have received conform functionally to the current device data
sheet (www.microchip.com/DS40002312), except for the anomalies described in this document. The errata described
in this document will likely be addressed in future revisions of the ATtiny804/806/807/1604/1606/1607 devices.
Notes:
• This document summarizes all the silicon errata issues from all revisions of silicon, previous as well as current
• Refer to the Device/Revision ID section in the current device data sheet (www.microchip.com/DS40002312) for
more detailed information on Device Identification and Revision IDs for your specific device, or contact your local
Microchip sales office for assistance
© 2021 Microchip Technology Inc.
Errata
DS80000951A-page 1
1. Silicon Issue Summary
Legend
- Erratum is not applicable.
X Erratum is applicable.
Peripheral Short Description Valid for Silicon
Revision
Rev. A
Device
2.2.1 Writing the OSCLOCK Fuse in FUSE.OSCCFG to ‘1’ Prevents Automatic
Loading of Calibration Values
X
ADC
2.3.1 One Extra Measurement Performed After Disabling ADC Free-Running
Mode
X
2.3.2 Pending Event Stuck When Disabling the ADC X
2.3.3 ADC Performance Degrades with CLKADC Above 1.5 MHz and VDD <
2.7V
X
2.3.4 ADC Functionality Cannot be Ensured with CLKADC Above 1.5 MHz and a
Setting of 25% Duty Cycle
X
CCL
2.4.1 Connecting LUTs in Linked Mode Requires OUTEN Set to ‘1’ X
2.4.2 D-latch is Not Functional X
2.4.3 The CCL Must be Disabled to Change the Configuration of a Single LUT X
RTC
2.5.1 Disabling the RTC Stops the PIT X
2.5.2 Any Write to the RTC.CTRLA Register Resets the RTC and PIT Prescaler X
TCA 2.6.1 Restart Will Reset Counter Direction in NORMAL and FRQ Mode X
TCB
2.7.1 The TCA Restart Command Does Not Force a Restart of TCB X
2.7.2 Minimum Event Duration Must Exceed the Selected Clock Period X
2.7.3 CCMP and CNT Registers Operate as 16-Bit Registers in 8-Bit PWM Mode X
USART
2.8.1 TXD Pin Override Not Released When Disabling the Transmitter X
2.8.2 Open-Drain Mode Does Not Work When TXD is Configured as Output X
2.8.3 Start-of-Frame Detection Can Unintentionally Be Triggered in Active Mode X
ATtiny804/806/807/1604/1606/1607
Silicon Issue Summary
© 2021 Microchip Technology Inc.
Errata
DS80000951A-page 2