C8051F330_07 Datasheet, PDF (4/216 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F330/1/2/3/4/5
9.2.5. Stack ....................................................................................................... 80
9.2.6. Special Function Registers....................................................................... 81
9.2.7. Register Descriptions ............................................................................... 85
9.3. Interrupt Handler ............................................................................................... 87
9.3.1. MCU Interrupt Sources and Vectors ........................................................ 88
9.3.2. External Interrupts .................................................................................... 89
9.3.3. Interrupt Priorities ..................................................................................... 89
9.3.4. Interrupt Latency ...................................................................................... 89
9.3.5. Interrupt Register Descriptions................................................................. 91
9.4. Power Management Modes .............................................................................. 96
9.4.1. Idle Mode.................................................................................................. 96
9.4.2. Stop Mode ................................................................................................ 97
10. Reset Sources......................................................................................................... 99
10.1.Power-On Reset ............................................................................................. 100
10.2.Power-Fail Reset/VDD Monitor ...................................................................... 100
10.3.External Reset ................................................................................................ 101
10.4.Missing Clock Detector Reset ........................................................................ 101
10.5.Comparator0 Reset ........................................................................................ 102
10.6.PCA Watchdog Timer Reset .......................................................................... 102
10.7.Flash Error Reset ........................................................................................... 102
10.8.Software Reset ............................................................................................... 102
11. Flash Memory ....................................................................................................... 105
11.1.Programming The Flash Memory ................................................................... 105
11.1.1.Flash Lock and Key Functions ............................................................... 105
11.1.2.Flash Erase Procedure .......................................................................... 105
11.1.3.Flash Write Procedure ........................................................................... 106
11.2.Non-volatile Data Storage .............................................................................. 106
11.3.Security Options ............................................................................................. 107
11.4.Flash Write and Erase Guidelines .................................................................. 109
11.4.1.V_DD Maintenance and the V_DD monitor ................................................. 109
11.4.2.PSWE Maintenance ............................................................................... 109
11.4.3.System Clock ......................................................................................... 110
12. External RAM ........................................................................................................ 113
13. Oscillators ............................................................................................................. 115
13.1.Programmable Internal High-Frequency (H-F) Oscillator ............................... 115
13.2.Programmable Internal Low-Frequency (L-F) Oscillator ................................ 117
13.2.1.Calibrating the Internal L-F Oscillator..................................................... 117
13.3.External Oscillator Drive Circuit...................................................................... 118
13.3.1.External Crystal Example....................................................................... 120
13.3.2.External RC Example............................................................................. 122
13.3.3.External Capacitor Example................................................................... 122
13.4.System Clock Selection.................................................................................. 123
14. Port Input/Output.................................................................................................. 125
14.1.Priority Crossbar Decoder .............................................................................. 127
14.2.Port I/O Initialization ....................................................................................... 129
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Rev. 1.5