C8051F52X Datasheet, PDF (4/220 Pages) Silicon Laboratories – 8/4/2 kB ISP Flash MCU Family

C8051F52x-53x
9.1.1. Instruction and CPU Timing ..................................................................... 76
9.1.2. MOVX Instruction and Program Memory ................................................. 77
9.2. Register Descriptions........................................................................................ 80
9.3. Power Management Modes .............................................................................. 83
9.3.1. Idle Mode.................................................................................................. 84
9.3.2. Stop Mode ................................................................................................ 84
10. Memory Organization and SFRs ........................................................................... 85
10.1.Program Memory.............................................................................................. 85
10.2.Data Memory .................................................................................................... 86
10.3.General Purpose Registers .............................................................................. 86
10.4.Bit Addressable Locations ................................................................................ 86
10.5.Stack................................................................................................................. 86
10.6.Special Function Registers............................................................................... 87
11. Interrupt Handler .................................................................................................... 91
11.1.MCU Interrupt Sources and Vectors................................................................. 91
11.2.Interrupt Priorities ............................................................................................. 91
11.3.Interrupt Latency............................................................................................... 91
11.4.Interrupt Register Descriptions ......................................................................... 93
11.5.External Interrupts ............................................................................................ 97
12. Reset Sources......................................................................................................... 99
12.1.Power-On Reset ............................................................................................. 100
12.2.Power-Fail Reset / VDD Monitor .................................................................... 101
12.3.External Reset ................................................................................................ 102
12.4.Missing Clock Detector Reset ........................................................................ 102
12.5.Comparator Reset .......................................................................................... 102
12.6.PCA Watchdog Timer Reset .......................................................................... 103
12.7.Flash Error Reset ........................................................................................... 103
12.8.Software Reset ............................................................................................... 103
13. Flash Memory ....................................................................................................... 107
13.1.Programming The Flash Memory ................................................................... 107
13.1.1.Flash Lock and Key Functions ............................................................... 107
13.1.2.Flash Erase Procedure .......................................................................... 108
13.1.3.Flash Write Procedure ........................................................................... 108
13.2.Flash Write and Erase Guidelines .................................................................. 109
13.2.1.V_DD Maintenance and the V_DD monitor ................................................. 110
13.2.2.PSWE Maintenance ............................................................................... 111
13.2.3.System Clock ......................................................................................... 111
13.3.Non-volatile Data Storage .............................................................................. 112
13.4.Security Options ............................................................................................. 112
14. Port Input/Output.................................................................................................. 117
14.1.Priority Crossbar Decoder .............................................................................. 119
14.2.Port I/O Initialization ....................................................................................... 123
14.3.General Purpose Port I/O ............................................................................... 125
15. Oscillators ............................................................................................................. 133
15.1.Programmable Internal Oscillator ................................................................... 133
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Rev. 0.3