Silicon Laboratories C8051F120 Manual page 4

C8051F120/1/2/3/4/5/6/7
8.1.1. Update Output On-Demand ...................................................................................99
8.1.2. Update Output Based on Timer Overflow ...........................................................100
8.2. DAC Output Scaling/Justification.................................................................................100
9. VOLTAGE REFERENCE (C8051F120/2/4/6) .................................................................107
10. VOLTAGE REFERENCE (C8051F121/3/5/7) .................................................................109
11. COMPARATORS................................................................................................................111
12. CIP-51 MICROCONTROLLER........................................................................................119
12.1.Instruction Set................................................................................................................120
12.1.1. Instruction and CPU Timing................................................................................120
12.1.2. MOVX Instruction and Program Memory...........................................................120
12.2. Memory Organization ...................................................................................................125
12.2.1. Program Memory .................................................................................................125
12.2.2. Data Memory .......................................................................................................127
12.2.3. General Purpose Registers ...................................................................................127
12.2.4. Bit Addressable Locations ...................................................................................127
12.2.5. Stack .................................................................................................................127
12.2.6. Special Function Registers...................................................................................128
12.2.6.1.SFR Paging..................................................................................................128
12.2.6.2.Interrupts and SFR Paging...........................................................................128
12.2.6.3.SFR Page Stack Example ............................................................................130
12.2.7. Register Descriptions ...........................................................................................143
12.3. Interrupt Handler ...........................................................................................................146
12.3.1. MCU Interrupt Sources and Vectors ...................................................................146
12.3.2. External Interrupts ...............................................................................................146
12.3.3. Interrupt Priorities................................................................................................148
12.3.4. Interrupt Latency..................................................................................................148
12.3.5. Interrupt Register Descriptions ............................................................................149
12.4. Power Management Modes ...........................................................................................155
12.4.1. Idle Mode .............................................................................................................155
12.4.2. Stop Mode............................................................................................................155
13. MULTIPLY AND ACCUMULATE (MAC0) ...................................................................157
13.1. Special Function Registers ............................................................................................157
13.2. Integer and Fractional Math ..........................................................................................158
13.3.Operating in Multiply and Accumulate Mode...............................................................159
13.4. Operating in Multiply Only Mode.................................................................................159
13.5. Accumulator Shift Operations.......................................................................................159
13.6. Rounding and Saturation ...............................................................................................160
13.7.Usage Examples ............................................................................................................160
14. RESET SOURCES ..............................................................................................................167
14.1. Power-on Reset..............................................................................................................168
14.2. Power-fail Reset ............................................................................................................168
14.3. External Reset................................................................................................................168
14.4. Missing Clock Detector Reset .......................................................................................169
14.5.Comparator0 Reset ........................................................................................................169
14.6. External CNVSTR0 Pin Reset.......................................................................................169
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