C8051F02X Datasheet, PDF (4/272 Pages) Silicon Laboratories – 8K ISP FLASH MCU Family

C8051F020/1/2/3
10. VOLTAGE REFERENCE (C8051F021/3)..........................................................................93
11. COMPARATORS..................................................................................................................95
12. CIP-51 MICROCONTROLLER........................................................................................101
12.1. Instruction Set................................................................................................................102
12.1.1. Instruction and CPU Timing................................................................................102
12.1.2. MOVX Instruction and Program Memory...........................................................102
12.2. Memory Organization ...................................................................................................107
12.2.1. Program Memory .................................................................................................107
12.2.2. Data Memory .......................................................................................................108
12.2.3. General Purpose Registers ...................................................................................108
12.2.4. Bit Addressable Locations ...................................................................................108
12.2.5. Stack .................................................................................................................108
12.2.6. Special Function Registers...................................................................................109
12.2.7. Register Descriptions ...........................................................................................113
12.3. Interrupt Handler ...........................................................................................................116
12.3.1. MCU Interrupt Sources and Vectors ...................................................................116
12.3.2. External Interrupts ...............................................................................................116
12.3.3. Interrupt Priorities................................................................................................118
12.3.4. Interrupt Latency..................................................................................................118
12.3.5. Interrupt Register Descriptions ............................................................................119
12.4. Power Management Modes ...........................................................................................125
12.4.1. Idle Mode .............................................................................................................125
12.4.2. Stop Mode............................................................................................................125
13. RESET SOURCES ..............................................................................................................127
13.1. Power-on Reset..............................................................................................................128
13.2. Power-fail Reset ............................................................................................................128
13.3. External Reset................................................................................................................129
13.4. Software Forced Reset...................................................................................................129
13.5. Missing Clock Detector Reset .......................................................................................129
13.6.Comparator0 Reset ........................................................................................................129
13.7. External CNVSTR Pin Reset.........................................................................................129
13.8. Watchdog Timer Reset ..................................................................................................129
13.8.1. Enable/Reset WDT ..............................................................................................130
13.8.2. Disable WDT .......................................................................................................130
13.8.3. Disable WDT Lockout.........................................................................................130
13.8.4. Setting WDT Interval...........................................................................................130
14. OSCILLATORS...................................................................................................................135
14.1. External Crystal Example..............................................................................................138
14.2. External RC Example ....................................................................................................138
14.3. External Capacitor Example..........................................................................................138
15. FLASH MEMORY ..............................................................................................................139
15.1. Programming The FLASH Memory .............................................................................139
15.2. Non-volatile Data Storage .............................................................................................140
15.3. Security Options ............................................................................................................140
16. EXTERNAL DATA MEMORY INTERFACE AND ON-CHIP XRAM.......................145
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Rev. 1.4