13.2 IDLE MODE ........................................................................................................................................... 29

13.3 MULTI-INPUT WAKE-UP ...................................................................................................................... 30

14.0 Interrupts .................................................................................................................................................. 31

14.1 INTRODUCTION ................................................................................................................................... 31

14.2 MASKABLE INTERRUPTS ................................................................................................................... 32

14.3 VIS INSTRUCTION ............................................................................................................................... 33

14.3.1 VIS Execution .................................................................................................................................. 34

14.4 NON-MASKABLE INTERRUPT ............................................................................................................ 35

14.4.1 Pending Flag .................................................................................................................................... 35

14.4.2 Software Trap .................................................................................................................................. 35

14.4.2.1 Programming Example: External Interrupt ................................................................................. 36

14.5 PORT C AND PORT L INTERRUPTS .................................................................................................. 37

14.6 INTERRUPT SUMMARY ....................................................................................................................... 37

15.0 WATCHDOG/Clock Monitor ..................................................................................................................... 37

15.1 CLOCK MONITOR ................................................................................................................................ 38

15.2 WATCHDOG/CLOCK MONITOR OPERATION .................................................................................... 38

15.3 WATCHDOG AND CLOCK MONITOR SUMMARY .............................................................................. 38

15.4 DETECTION OF ILLEGAL CONDITIONS ............................................................................................ 39

16.0 MICROWIRE/PLUS .................................................................................................................................. 39

16.1 MICROWIRE/PLUS OPERATION ......................................................................................................... 39

16.2 MICROWIRE/PLUS MASTER MODE OPERATION ............................................................................. 40

16.3 MICROWIRE/PLUS SLAVE MODE OPERATION ................................................................................ 40

16.4 ALTERNATE SK PHASE OPERATION AND SK IDLE POLARITY ...................................................... 40

17.0 ACCESS.Bus Interface ............................................................................................................................ 42

17.1 DATA TRANSACTIONS ........................................................................................................................ 42

17.1.1 Start and Stop .................................................................................................................................. 43

17.1.2 Acknowledge Cycle .......................................................................................................................... 43

17.1.3 Addressing Transfer Formats .......................................................................................................... 43

17.2 BUS ARBITRATION .............................................................................................................................. 43

17.3 POWER SAVE MODES ........................................................................................................................ 43

17.4 SDA AND SCL DRIVER CONFIGURATION ......................................................................................... 43

17.5 ACB SERIAL DATA REGISTER (ACBSDA) .......................................................................................... 44

17.6 ACB STATUS REGISTER (ACBST) ..................................................................................................... 44

17.7 ACB CONTROL STATUS REGISTER (ACBCST) ................................................................................ 44

17.8 ACB CONTROL 1 REGISTER (ACBCTL1) .......................................................................................... 44

17.9 ACB CONTROL REGISTER 2 (ACBCTL2) .......................................................................................... 45

17.10 ACB OWN ADDRESS REGISTER (ACBADDR) ................................................................................ 45

18.0 Memory Map ............................................................................................................................................ 45

19.0 Instruction Set .......................................................................................................................................... 46

19.1 INTRODUCTION ................................................................................................................................... 46

19.2 INSTRUCTION FEATURES .................................................................................................................. 46

19.3 ADDRESSING MODES ......................................................................................................................... 46

19.3.1 Operand Addressing Modes ............................................................................................................ 47

19.3.2 Tranfer-of-Control Addressing Modes .............................................................................................. 48

19.4 INSTRUCTION TYPES ......................................................................................................................... 48

19.4.1 Arithmetic Instructions ...................................................................................................................... 48

19.4.2 Transfer-of-Control Instructions ....................................................................................................... 48

19.4.3 Load and Exchange Instructions ..................................................................................................... 49

19.4.4 Logical Instructions .......................................................................................................................... 49

19.4.5 Accumulator Bit Manipulation Instructions ....................................................................................... 49

19.4.6 Stack Control Instructions ................................................................................................................ 49

19.4.7 Memory Bit Manipulation Instructions ............................................................................................. 49

19.4.8 Conditional Instructions ................................................................................................................... 49

19.4.9 No-Operation Instruction .................................................................................................................. 49

19.5 REGISTER AND SYMBOL DEFINITION .............................................................................................. 49

19.6 INSTRUCTION SET SUMMARY .......................................................................................................... 50

19.7 INSTRUCTION EXECUTION TIME ...................................................................................................... 51

20.0 Development Support

............................................................................................................................. 54

20.1 TOOLS ORDERING NUMBERS FOR THE COP8TA 2.5V FLASH FAMILY DEVICES ....................... 54

20.2 COP8 TOOLS OVERVIEW ................................................................................................................... 55

20.3 WHERE TO GET TOOLS ..................................................................................................................... 56

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