ATTINY4_1 Datasheet, PDF (158/168 Pages) ATMEL Corporation – 8-bit Microcontroller with 512/1024 Bytes In-System Programmable Flash

22. Errata
22.1 ATtiny4
22.1.1 Rev. D
22.1.2 Rev. A – C
22.2 ATtiny5
22.2.1 Rev. D
22.2.2 Rev. A – C
The revision letters in this section refer to the revision of the corresponding ATtiny4/5/9/10
device.
• ESD HBM (ESD STM 5.1) level ±1000V
• Lock bits re-programming
1. ESD HBM (ESD STM 5.1) level ±1000V
The device meets ESD HBM (ESD STM 5.1) level ±1000V.
Problem Fix / Workaround
Always use proper ESD protection measures (Class 1C) when handling integrated circuits
before and during assembly.
2. Lock bits re-programming
Attempt to re-program Lock bits to present, or lower protection level (tampering attempt),
causes erroneously one, random line of Flash program memory to get erased. The Lock bits
will not get changed, as they should not.
Problem Fix / Workaround
Do not attempt to re-program Lock bits to present, or lower protection level.
Not sampled.
• ESD HBM (ESD STM 5.1) level ±1000V
• Lock bits re-programming
1. ESD HBM (ESD STM 5.1) level ±1000V
The device meets ESD HBM (ESD STM 5.1) level ±1000V.
Problem Fix / Workaround
Always use proper ESD protection measures (Class 1C) when handling integrated circuits
before and during assembly.
2. Lock bits re-programming
Attempt to re-program Lock bits to present, or lower protection level (tampering attempt),
causes erroneously one, random line of Flash program memory to get erased. The Lock bits
will not get changed, as they should not.
Problem Fix / Workaround
Do not attempt to re-program Lock bits to present, or lower protection level.
Not sampled.
158 ATtiny4/5/9/10
8127C–AVR–10/09