attiny13-20ss ATMEL Corporation, attiny13-20ss Datasheet - Page 169

• Manufacturer Part Number: attiny13-20ss
• Description: 8-bit Microcontroller With 1k Bytes In-system Programmable Flash - Atmel Corporation
• Manufacturer: ATMEL Corporation

ATtiny13 Rev. A
2535G–AVR–01/07
4. debugWIRE communication not blocked by lock-bits
5. Watchdog Timer Interrupt disabled
6. EEPROM can not be written below 1.9 Volt
When debugWIRE on-chip debug is enabled (DWEN = 0), the contents of program
memory and EEPROM data memory can be read even if the lock-bits are set to
block further reading of the device.
Problem fix/ Workaround
Do not ship products with on-chip debug of the tiny13 enabled.
If the watchdog timer interrupt flag is not cleared before a new timeout occurs, the
watchdog will be disabled, and the interrupt flag will automatically be cleared. This is
only applicable in interrupt only mode. If the Watchdog is configured to reset the
device in the watchdog time-out following an interrupt, the device works correctly.
Problem fix / Workaround
Make sure there is enough time to always service the first timeout event before a
new watchdog timeout occurs. This is done by selecting a long enough time-out
period.
Writing the EEPROM at V
Problem Fix/Workaround
Do not write the EEPROM when V
Revision A has not been sampled.
CC
below 1.9 volts might fail.
CC
is below 1.9 volts.
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