Datasheet

iii
8024A–AVR–04/08
ATmega8HVA/16HVA
14.4Alternate Port Functions ........................................................................................60
14.5Register Description ..............................................................................................62
15 Low Voltage I/O-Ports ............................................................................ 63
15.1Overview ................................................................................................................63
15.2Low Voltage Ports as General Digital I/O ..............................................................64
15.3Alternate Port Functions ........................................................................................68
15.4Register Description ..............................................................................................73
16 Timer/Counter0 and Timer/Counter1 Prescalers ................................ 74
16.1Overview ................................................................................................................74
16.2External Clock Source ...........................................................................................75
16.3Register Description ..............................................................................................76
17 Timer/Counter(T/C0,T/C1) ...................................................................... 77
17.1Features ................................................................................................................77
17.2Overview ................................................................................................................77
17.3Timer/Counter Clock Sources ...............................................................................78
17.4Counter Unit ..........................................................................................................79
17.5Modes of Operation ...............................................................................................80
17.6Input Capture Unit .................................................................................................82
17.7Output Compare Unit .............................................................................................84
17.8Timer/Counter Timing Diagrams ...........................................................................85
17.9Accessing Registers in 16-bit Mode ......................................................................86
17.10Register Description ............................................................................................90
18 SPI – Serial Peripheral Interface ........................................................... 94
18.1Features ................................................................................................................94
18.2Overview ................................................................................................................94
18.3SS
Pin Functionality ..............................................................................................99
18.4Data Modes ...........................................................................................................99
18.5Register Description ............................................................................................101
19 Coulomb Counter - Dedicated Fuel Gauging Sigma-delta ADC ...... 104
19.1Features ..............................................................................................................104
19.2Overview ..............................................................................................................104
19.3Normal Operation ................................................................................................105
19.4Regular Current Detection Operation ..................................................................106
19.5Offset Canceling by Polarity Switching ................................................................107