Rainbow Electronics ATmega8HVD - Manual (Page 166)

iv
8052B–AVR–09/08
ATmega4HVD/8HVD
20 Battery Protection ................................................................................ 104
20.1Features ..............................................................................................................104
20.2Overview ..............................................................................................................104
20.3Short-circuit Protection ........................................................................................105
20.4Discharge Over-current Protection ......................................................................105
20.5Charge Over-current Protection ..........................................................................105
20.6External Protection Input .....................................................................................106
20.7Battery Protection CPU Interface ........................................................................108
20.8Register Description ............................................................................................108
21 FET Control ........................................................................................... 114
21.1Overview ..............................................................................................................114
21.2FET Driver ...........................................................................................................115
21.3DUVR – Deep Under-Voltage Recovery Mode operation ...................................117
21.4Register Description ............................................................................................117
22 debugWIRE On-chip Debug System .................................................. 119
22.1Features ..............................................................................................................119
22.2Overview ..............................................................................................................119
22.3Physical Interface ................................................................................................119
22.4Software Break Points .........................................................................................120
22.5Limitations of debugWIRE ...................................................................................120
22.6Register Description ............................................................................................120
23 Self-Programming the Flash ............................................................... 121
23.1Overview ..............................................................................................................121
23.2Performing Page Erase by SPM ..........................................................................121
23.3Filling the Temporary Buffer (Page Loading) .......................................................121
23.4Performing a Page Write .....................................................................................122
23.5Addressing the Flash During Self-Programming .................................................122
23.6Register Description ............................................................................................127
24 Memory Programming ......................................................................... 129
24.1Program And Data Memory Lock Bits .................................................................129
24.2Fuse Bits ..............................................................................................................129
24.3Signature Bytes ...................................................................................................130
24.4Calibration Bytes .................................................................................................131
24.5Page Size ............................................................................................................131
24.6Serial Downloading ..............................................................................................131