ATmega32HVB datasheet(270/273 Pages) ATMEL

270 / 273 page

8042A–AVR–07/09

ATmega16HVB/32HVB

25.4Register Description ............................................................................................153

Cell Balancing ...................................................................................... 154

26.1Overview ..............................................................................................................154

26.2Register Description ............................................................................................155

2-wire Serial Interface .......................................................................... 156

27.1Features ..............................................................................................................156

27.2Two-wire Serial Interface Bus Definition ..............................................................156

27.3Data Transfer and Frame Format ........................................................................157

27.4Multi-master Bus Systems, Arbitration and Synchronization ...............................160

27.5Overview of the TWI Module ...............................................................................162

27.6Using the TWI ......................................................................................................165

27.7Transmission Modes ...........................................................................................168

27.8Multi-master Systems and Arbitration ..................................................................181

27.9Bus Connect/Disconnect for Two-wire Serial Interface .......................................183

27.10Register Description ..........................................................................................184

debugWIRE On-chip Debug System .................................................. 189

28.1Features ..............................................................................................................189

28.2Overview ..............................................................................................................189

28.3Physical Interface ................................................................................................189

28.4Software Break Points .........................................................................................190

28.5Limitations of debugWIRE ...................................................................................190

28.6Register Description ............................................................................................190

Boot Loader Support – Read-While-Write Self-Programming ......... 191

29.1Features ..............................................................................................................191

29.2Overview ..............................................................................................................191

29.3Application and Boot Loader Flash Sections .......................................................191

29.4Read-While-Write and No Read-While-Write Flash Sections ..............................192

29.5Boot Loader Lock Bits .........................................................................................194

29.6Entering the Boot Loader Program ......................................................................195

29.7Addressing the Flash During Self-Programming .................................................196

29.8Self-Programming the Flash ................................................................................197

29.9Register Description ............................................................................................206

Memory Programming ......................................................................... 208

30.1Program And Data Memory Lock Bits .................................................................208

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