attiny25v ATMEL Corporation, attiny25v Datasheet - Page 217
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attiny25v
Manufacturer Part Number
attiny25v
Description
Microcontroller With 2/4/8k Bytes In-system Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.ATTINY25V.pdf
(231 pages)
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- Current page: 217 of 231
- Download datasheet (5Mb)
ATtiny25/45/85
When the Memory Lock Bits LB2 and LB1 are programmed to mode 3, EEPROM read does
not work from the application code.
Problem Fix/Work around
Do not set Lock Bit Protection Mode 3 when the application code needs to read from
EEPROM.
5. EEPROM read may fail at low supply voltage / low clock frequency
Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in
invalid data.
Problem Fix/Workaround
Do not use the EEPROM when clock frequency is below 1 MHz and supply voltage is below
2V. If operating frequency can not be raised above 1 MHz then supply voltage should be
more than 3V. Similarly, if supply voltage can not be raised above 2V then operating fre-
quency should be more than 2 MHz.
This feature is known to be temperature dependent but it has not been characterised.
Guidelines are given for room temperature, only.
217
2586K–AVR–01/08
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