7.2.1 LimitationsBOD disable functionality has been implemented in the following devices, only:• ATtiny25, revision E, and newer• ATtiny45, all revisions• ATtiny85, revision C, and newer
Why do you need the BOD?
Playing with a battery-powered (2xAA) circuit that shuts itself off by going into power-down mode. Thought it good to have the BOD enabled for the reasons stated in the datasheet.
Quiescent current is ~22-25µA with the BOD enabled, and <0.5µA with it disabled. As a practical matter, it probably makes no difference whatsoever
but half a microamp is just too cool!
I remember two things: possible Flash corruption and possible EEPROM corruption. Was there anything else?
Well, that depends on the application.
As far as I can tell, the 85V (internal oscillator at 1 MHz) is reliable down to 1.6 volts. The alkaline batteries I use (two AA) consistently die between 1.6 V and 1.8 V. For me, the nice thing about sans BOD is that I can run the batteries essentially dead.
For the next gadget, my plan is to add Vcc measuring...http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1294478456/allhttp://arduino.cc/forum/index.php/topic,56750.msg407897.html#msg407897
Define "die" ... are you saying the oscillator stops at ~1.6V?
From the symptoms, my guess is that RESET is asserted.