14.3 WATCHDOG AND CLOCK MONITOR SUMMARY .............................................................................. 32

14.4 DETECTION OF ILLEGAL CONDITIONS ............................................................................................ 33

15.0 MICROWIRE/PLUS .................................................................................................................................. 33

15.1 MICROWIRE/PLUS OPERATION ......................................................................................................... 33

15.2 MICROWIRE/PLUS MASTER MODE OPERATION ............................................................................. 34

15.3 MICROWIRE/PLUS SLAVE MODE OPERATION ................................................................................ 34

15.4 ALTERNATE SK PHASE OPERATION AND SK IDLE POLARITY ...................................................... 34

16.0 ACCESS.Bus Interface ............................................................................................................................ 36

16.1 DATA TRANSACTIONS ........................................................................................................................ 36

16.1.1 Start and Stop .................................................................................................................................. 37

16.1.2 Acknowledge Cycle .......................................................................................................................... 37

16.1.3 Addressing Transfer Formats .......................................................................................................... 37

16.2 BUS ARBITRATION .............................................................................................................................. 37

16.3 POWER SAVE MODES ........................................................................................................................ 37

16.4 SDA AND SCL DRIVER CONFIGURATION ......................................................................................... 37

16.5 ACB SERIAL DATA REGISTER (ACBSDA) .......................................................................................... 38

16.6 ACB STATUS REGISTER (ACBST) ..................................................................................................... 38

16.7 ACB CONTROL STATUS REGISTER (ACBCST) ................................................................................ 38

16.8 ACB CONTROL 1 REGISTER (ACBCTL1) .......................................................................................... 38

16.9 ACB CONTROL REGISTER 2 (ACBCTL2) .......................................................................................... 39

16.10 ACB OWN ADDRESS REGISTER (ACBADDR) ................................................................................ 39

17.0 Memory Map ............................................................................................................................................ 39

18.0 Instruction Set .......................................................................................................................................... 40

18.1 INTRODUCTION ................................................................................................................................... 40

18.2 INSTRUCTION FEATURES .................................................................................................................. 40

18.3 ADDRESSING MODES ......................................................................................................................... 40

18.3.1 Operand Addressing Modes ............................................................................................................ 40

18.3.2 Tranfer-of-Control Addressing Modes .............................................................................................. 41

18.4 INSTRUCTION TYPES ......................................................................................................................... 42

18.4.1 Arithmetic Instructions ...................................................................................................................... 42

18.4.2 Transfer-of-Control Instructions ....................................................................................................... 42

18.4.3 Load and Exchange Instructions ..................................................................................................... 43

18.4.4 Logical Instructions .......................................................................................................................... 43

18.4.5 Accumulator Bit Manipulation Instructions ....................................................................................... 43

18.4.6 Stack Control Instructions ................................................................................................................ 43

18.4.7 Memory Bit Manipulation Instructions ............................................................................................. 43

18.4.8 Conditional Instructions ................................................................................................................... 43

18.4.9 No-Operation Instruction .................................................................................................................. 43

18.5 REGISTER AND SYMBOL DEFINITION .............................................................................................. 43

18.6 INSTRUCTION SET SUMMARY .......................................................................................................... 44

18.7 INSTRUCTION EXECUTION TIME ...................................................................................................... 45

19.0 Development Support

............................................................................................................................. 48

19.1 TOOLS ORDERING NUMBERS FOR THE COP8TA 2.5V FAMILY DEVICES ................................... 48

19.2 COP8 TOOLS OVERVIEW ................................................................................................................... 49

19.3 WHERE TO GET TOOLS ..................................................................................................................... 50

20.0 Revision History ....................................................................................................................................... 52

21.0 Physical Dimensions ................................................................................................................................ 53

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