C8051F330-GMR Datasheet, PDF (4/210 Pages) Silicon Laboratories – Mixed-Signal ISP Flash MCU

C8051F330/1/2/3/4/5
9.2.5. Stack ....................................................................................................... 78
9.2.6. Special Function Registers....................................................................... 79
9.2.7. Register Descriptions ............................................................................... 83
9.3. Interrupt Handler ............................................................................................... 85
9.3.1. MCU Interrupt Sources and Vectors ........................................................ 86
9.3.2. External Interrupts .................................................................................... 87
9.3.3. Interrupt Priorities ..................................................................................... 87
9.3.4. Interrupt Latency ...................................................................................... 87
9.3.5. Interrupt Register Descriptions................................................................. 89
9.4. Power Management Modes .............................................................................. 94
9.4.1. Idle Mode.................................................................................................. 94
9.4.2. Stop Mode ................................................................................................ 95
10. Reset Sources......................................................................................................... 97
10.1.Power-On Reset ............................................................................................... 98
10.2.Power-Fail Reset/VDD Monitor ........................................................................ 98
10.3.External Reset .................................................................................................. 99
10.4.Missing Clock Detector Reset .......................................................................... 99
10.5.Comparator0 Reset ........................................................................................ 100
10.6.PCA Watchdog Timer Reset .......................................................................... 100
10.7.Flash Error Reset ........................................................................................... 100
10.8.Software Reset ............................................................................................... 100
11. Flash Memory ....................................................................................................... 103
11.1.Programming The Flash Memory ................................................................... 103
11.1.1.Flash Lock and Key Functions ............................................................... 103
11.1.2.Flash Erase Procedure .......................................................................... 103
11.1.3.Flash Write Procedure ........................................................................... 104
11.2.Non-volatile Data Storage .............................................................................. 104
11.3.Security Options ............................................................................................. 105
11.4.Flash Write and Erase Guidelines .................................................................. 107
11.4.1.V_DD Maintenance and the V_DD monitor ................................................. 107
11.4.2.PSWE Maintenance ............................................................................... 107
11.4.3.System Clock ......................................................................................... 108
12. External RAM ........................................................................................................ 111
13. Oscillators ............................................................................................................. 113
13.1.Programmable Internal High-Frequency (H-F) Oscillator ............................... 113
13.2.Programmable Internal Low-Frequency (L-F) Oscillator ................................ 115
13.2.1.Calibrating the Internal L-F Oscillator..................................................... 115
13.3.External Oscillator Drive Circuit...................................................................... 116
13.3.1.External Crystal Example....................................................................... 118
13.3.2.External RC Example............................................................................. 120
13.3.3.External Capacitor Example................................................................... 120
13.4.System Clock Selection.................................................................................. 121
14. Port Input/Output.................................................................................................. 123
14.1.Priority Crossbar Decoder .............................................................................. 125
14.2.Port I/O Initialization ....................................................................................... 127
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Rev. 1.7