C8051F310 datasheet(4/228 Pages) SILABS

4 / 228 page

C8051F310/1/2/3/4/5/6/7

Rev. 1.7

8.3.4. Interrupt Latency ...................................................................................... 95

8.3.5. Interrupt Register Descriptions................................................................. 97

8.4. Power Management Modes ............................................................................ 102

8.4.1. Idle Mode................................................................................................ 102

8.4.2. Stop Mode .............................................................................................. 103

9. Reset Sources....................................................................................................... 105

9.1. Power-On Reset ............................................................................................. 106

9.2. Power-Fail Reset / VDD Monitor...................................................................... 106

9.3. External Reset ................................................................................................ 107

9.4. Missing Clock Detector Reset......................................................................... 108

9.5. Comparator0 Reset......................................................................................... 108

9.6. PCA Watchdog Timer Reset........................................................................... 108

9.7. Flash Error Reset............................................................................................ 108

9.8. Software Reset ............................................................................................... 108

10. Flash Memory ..................................................................................................... 111

10.1.Programming The Flash Memory ................................................................... 111

10.1.1.Flash Lock and Key Functions ............................................................... 111

10.1.2.Flash Erase Procedure .......................................................................... 111

10.1.3.Flash Write Procedure ........................................................................... 112

10.2.Non-volatile Data Storage .............................................................................. 112

10.3.Security Options ............................................................................................. 113

10.4.Flash Write and Erase Guidelines .................................................................. 115

10.4.1.VDD Maintenance and the VDD Monitor ................................................. 115

10.4.2.PSWE Maintenance ............................................................................... 115

10.4.3.System Clock ......................................................................................... 116

11. External RAM ........................................................................................................ 119

12. Oscillators ............................................................................................................. 121

12.1.Programmable Internal Oscillator ................................................................... 121

12.2.External Oscillator Drive Circuit...................................................................... 124

12.3.System Clock Selection.................................................................................. 124

12.4.External Crystal Example ............................................................................... 126

12.5.External RC Example ..................................................................................... 127

12.6.External Capacitor Example ........................................................................... 127

13. Port Input/Output ................................................................................................ 129

13.1.Priority Crossbar Decoder .............................................................................. 131

13.2.Port I/O Initialization ....................................................................................... 133

13.3.General Purpose Port I/O ............................................................................... 135

14. SMBus ................................................................................................................... 145

14.1.Supporting Documents ................................................................................... 146

14.2.SMBus Configuration...................................................................................... 146

14.3.SMBus Operation ........................................................................................... 146

14.3.1.Arbitration............................................................................................... 147

14.3.2.Clock Low Extension.............................................................................. 148

14.3.3.SCL Low Timeout................................................................................... 148

14.3.4.SCL High (SMBus Free) Timeout .......................................................... 148

C8051F310 数据表(PDF) 4 Page - Silicon Laboratories

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