Good day to all. I'm working on a project that uses a PIC 10LF322 that runs from two=20 NiMh cells in series. I've been having weird problems that I finally=20 tracked down to the PIC going into reset at voltages less than about 2.20V. I figure that the PIC is going into reset because pins defined as=20 output suddenly become high-impedance when the supply voltage drops=20 below that magic value of about 2.20V. My current config word is __config _PWRTE_OFF & _WDTE_OFF & _FOSC_INTOSC & _CP_OFF & _MCLRE_OFF=20 & _BOREN_OFF & _BORV_19 & _LVP_OFF I see another set of brown-out bits in the include files: _LPBOR_OFF EQU H'3DFF' ; BOR disabled _LPBOR_ON EQU H'3FFF' ; BOR enabled but I can't see anything that describes what that bit does in the=20 current data-sheet. However, adding "_LPBOR_OFF" to the config word=20 does not appear to stop the PIC from going into brown-out - and=20 increases the supply current while in brown-out by 0.4mA or so. So I=20 took that bit out of my config word. My goal is to have the PIC work down to at least 2.0V *and* to have=20 the lowest-possible current consumption when the PIC goes to=20 sleep. The PIC10LF322 is rated to work down to 1.80V. This project is to add low-battery disconnect to a board when its=20 NiMh cells become discharged too deeply PLUS adding an idle timer=20 that shuts the system down if it has not been used for a long period=20 of time. Restart is caused by cycling the power into the board. The weird problems that I was seeing was that it appeared as if the=20 PIC were never going into sleep. I would drop the supply voltage=20 down towards the low-battery cutoff voltage (2.05V) but the current=20 would never drop below about 0.22mA. And - I just happened to notice=20 that the PIC pin that drives the power-switch MOSFET was going=20 high-impedance instead of remaining low-impedance. Bringing the=20 voltage above 2.20V causes the unit to resume normal operation=20 instead of remaining in sleep. So: I'm guessing that I've done something stupid with the config bits=20 but I just can't see it. I'm hoping that the collected wisdom of the=20 PIClist will point me in the right direction. Many thanks! dwayne --=20 Dwayne Reid Trinity Electronics Systems Ltd Edmonton, AB, CANADA (780) 489-3199 voice (780) 487-6397 fax www.trinity-electronics.com Custom Electronics Design and Manufacturing --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .