C8051F980-C-GM Datasheet, PDF (4/325 Pages) Silicon Laboratories – Ultra Low Power, 8-2 kB Flash, Capacitive Sensing MCU

C8051F99x-C8051F98x
13.4.Interrupt Latency............................................................................................. 139
13.5.Interrupt Register Descriptions ....................................................................... 141
13.6.External Interrupts INT0 and INT1.................................................................. 148
14. Flash Memory ....................................................................................................... 150
14.1.Programming the Flash Memory .................................................................... 150
14.1.1.Flash Lock and Key Functions ............................................................... 150
14.1.2.Flash Erase Procedure .......................................................................... 151
14.1.3.Flash Write Procedure ........................................................................... 151
14.2.Non-volatile Data Storage .............................................................................. 151
14.3.Security Options ............................................................................................. 152
14.4.Determining the Device Part Number at Run Time ........................................ 154
14.5.Flash Write and Erase Guidelines .................................................................. 156
14.5.1.V_DD Maintenance and the V_DD Monitor ................................................. 156
14.5.2.PSWE Maintenance ............................................................................... 157
14.5.3.System Clock ......................................................................................... 157
14.6.Minimizing Flash Read Current ...................................................................... 158
15. Power Management.............................................................................................. 162
15.1.Normal Mode .................................................................................................. 163
15.2.Idle Mode........................................................................................................ 164
15.3.Stop Mode ...................................................................................................... 164
15.4.Suspend Mode ............................................................................................... 165
15.5.Sleep Mode .................................................................................................... 165
15.6.Configuring Wakeup Sources......................................................................... 166
15.7.Determining the Event that Caused the Last Wakeup.................................... 167
15.8.Power Management Specifications ................................................................ 171
16. Cyclic Redundancy Check Unit (CRC0) ............................................................. 172
16.1.CRC Algorithm................................................................................................ 172
16.2.Preparing for a CRC Calculation .................................................................... 174
16.3.Performing a CRC Calculation ....................................................................... 174
16.4.Accessing the CRC0 Result ........................................................................... 174
16.5.CRC0 Bit Reverse Feature............................................................................. 179
17. Voltage Regulator (VREG0) ................................................................................. 180
17.1.Voltage Regulator Electrical Specifications .................................................... 180
18. Reset Sources....................................................................................................... 181
18.1.Power-On Reset ............................................................................................. 182
18.2.Power-Fail Reset ............................................................................................ 183
18.3.External Reset ................................................................................................ 184
18.4.Missing Clock Detector Reset ........................................................................ 185
18.5.Comparator0 Reset ........................................................................................ 185
18.6.PCA Watchdog Timer Reset .......................................................................... 185
18.7.Flash Error Reset ........................................................................................... 185
18.8.SmaRTClock (Real Time Clock) Reset .......................................................... 186
18.9.Software Reset ............................................................................................... 186
19. Clocking Sources ................................................................................................. 188
19.1.Programmable Precision Internal Oscillator ................................................... 189
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