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5.3.5 Operation of the Watchdog Timer ............................................................. 1 02
5.3.6 Other Functions ......................................................................................... 103
5.4 CLOCK TIMER ........................................................................................................ 10 5
5.4.1 Configuration of the Clock Timer .............................................................. 106
5.4.2 Clock Mode Register ................................................................................. 106
5.5 TIMER/EVENT COUNTER ..................................................................................... 108
5.5.1 Configuration of Timer/Event Counter ...................................................... 108
5.5.2 8-Bit Timer/Event Counter Mode Operation ............................................. 114
5.5.3 Notes on Timer/Event Counter Applications............................................. 12 0
5.6 SERIAL INTERFACE .............................................................................................. 123
5.6.1 Serial Interface Functions.......................................................................... 123
5.6.2 Configuration of Serial Interface ............................................................... 124
5.6.3 Register Functions ..................................................................................... 1 27
5.6.4 Operation Halt Mode.................................................................................. 135
5.6.5 Three-Wire Serial I/O Mode Operations ................................................... 137
5.6.6 Two-Wire Serial I/O Mode ......................................................................... 144
5.6.7 SBI Mode Operation .................................................................................. 150
5.6.8 Manipulation of SCK Pin Output ............................................................... 179
5.7 BIT SEQUENTIAL BUFFER ................................................................................... 181
CHAPTER 6 INTERRUPT AND TEST FUNCTIONS .............................................................................. 183
6.1 CONFIGURATION OF THE INTERRUPT CONTROL CIRCUIT ........................... 18 3
6.2 TYPES OF INTERRUPT SOURCES AND VECTOR TABLES ............................. 185
6.3 VARIOUS DEVICES TO CONTROL INTERRUPT FUNCTIONS .......................... 187
6.4 INTERRUPT SEQUENCE ...................................................................................... 195
6.5 MULTIPLE INTERRUPT PROCESSING CONTROL............................................. 196
6.6 PROCESSING OF INTERRUPTS SHARING A VECTOR ADDRESS ................. 198
6.7 MACHINE CYCLES FOR STARTING INTERRUPT PROCESSING .................... 200
6.8 EFFECTIVE USE OF INTERRUPTS ..................................................................... 202
6.9 INTERRUPT APPLICATIONS ................................................................................ 202
6.10 TEST FUNCTION ................................................................................................. 210
6.10.1 Test Sources .......................................................................................... 210
6.10.2 Hardware to Control Test Functions ..................................................... 210
CHAPTER 7 STANDBY FUNCTION ..................................................................................................... 215
7.1 SETTING OF STANDBY MODES AND OPERATION STATUS ........................... 216
7.2 RELEASE OF THE STANDBY MODES................................................................. 217
7.3 OPERATION AFTER A STANDBY MODE IS RELEASED ................................... 219
7.4 SELECTION OF A MASK OPTION ........................................................................ 22 0
7.5 APPLICATIONS OF THE STANDBY MODES....................................................... 2 20