ATTIny13-12PI ATMEL Corporation, ATTIny13-12PI Datasheet - Page 161
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ATTIny13-12PI
Manufacturer Part Number
ATTIny13-12PI
Description
8-bit AVR Microcontroller with 1K Bytes In-System Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATTINY13-12PI.pdf
(169 pages)
- Current page: 161 of 169
- Download datasheet (3Mb)
Errata
ATtiny13 Rev. C
ATtiny13 Rev. B
2535B–AVR–01/04
The revision letter in this section refers to the revision of the ATtiny13 device.
There are no known errata for this revision.
•
•
•
•
•
1. Wrong values read after Erase Only operation
2. High Voltage Serial Programming Flash, EEPROM, Fuse and Lock Bits may
3. Device may lock for further programming
4. debugWIRE communication not blocked by lock-bits
Wrong values read after Erase Only operation
High Voltage Serial Programming Flash, EEPROM, Fuse and Lock Bits may fail
Device may lock for further programming
debugWIRE communication not blocked by lock-bits
Watchdog Timer Interrupt disabled
At supply voltages below 2.7 V, an EEPROM location that is erased by the Erase
Only operation may read as programmed (0x00).
Problem Fix/Workaround
If it is necessary to read an EEPROM location after Erase Only, use an Atomic Write
operation with 0xFF as data in order to erase a location. In any case, the Write Only
operation can be used as intended. Thus no special considerations are needed as
long as the erased location is not read before it is programmed.
fail
Writing to any of these locations and bits may in some occasions fail.
Problem Fix/Workaround
After a writing has been initiated, always observe the RDY/BSY signal. If the writing
should fail, rewrite until the RDY/BSY verifies a correct writing. This will be fixed in
revision C.
Special combinations of fuse bits will lock the device for further programming effec-
tively turning it into an OTP device. The following combinations of settings/fuse bits
will cause this effect:
–
–
–
Problem fix/ Workaround
Avoid the above fuse combinations. Selecting longer start-up time will eliminate the
problem.
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.
128 kHz internal oscillator (CKSEL[1..0] = 11), shortest start-up time
(SUT[1..0] = 00), Debugwire enabled (DWEN = 0) or Reset disabled
RSTDISBL = 0.
9.6 MHz internal oscillator (CKSEL[1..0] = 10), shortest start-up time
(SUT[1..0] = 00), Debugwire enabled (DWEN = 0) or Reset disabled
RSTDISBL = 0.
4.8 MHz internal oscillator (CKSEL[1..0] = 01), shortest start-up time
(SUT[1..0] = 00), Debugwire enabled (DWEN = 0) or Reset disabled
RSTDISBL = 0.
ATtiny13
161
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