C8051F960-B-GM Datasheet, PDF (7/492 Pages) Silicon Laboratories – Ultra Low Power 128K, LCD MCU Family

C8051F96x
24.3.1. Setting and Reading the SmaRTClock Timer Value ............................. 304
24.3.2. Setting a SmaRTClock Alarm ............................................................... 305
24.3.3. Software Considerations for using the SmaRTClock 
Timer and Alarm ................................................................................... 305
25. Low-Power Pulse Counter .................................................................................. 312
25.1. Counting Modes ............................................................................................ 313
25.2. Reed Switch Types........................................................................................ 314
25.3. Programmable Pull-Up Resistors .................................................................. 315
25.4. Automatic Pull-Up Resistor Calibration ......................................................... 317
25.5. Sample Rate.................................................................................................. 317
25.6. Debounce ...................................................................................................... 317
25.7. Reset Behavior .............................................................................................. 318
25.8. Wake up and Interrupt Sources..................................................................... 318
25.9. Real-Time Register Access ........................................................................... 319
25.10. Advanced Features ..................................................................................... 319
25.10.1. Quadrature Error ................................................................................. 319
25.10.2. Flutter Detection.................................................................................. 320
26. LCD Segment Driver ............................................................................................ 334
26.1. Configuring the LCD Segment Driver ............................................................ 334
26.2. Mapping Data Registers to LCD Pins............................................................ 335
26.3. LCD Contrast Adjustment.............................................................................. 338
26.3.1. Contrast Control Mode 1 (Bypass Mode).............................................. 338
26.3.2. Contrast Control Mode 2 (Minimum Contrast Mode) ............................ 339
26.3.3. Contrast Control Mode 3 (Constant Contrast Mode)............................. 339
26.3.4. Contrast Control Mode 4 (Auto-Bypass Mode) ..................................... 340
26.4. Adjusting the VBAT Monitor Threshold ......................................................... 344
26.5. Setting the LCD Refresh Rate ....................................................................... 345
26.6. Blinking LCD Segments................................................................................. 346
26.7. Advanced LCD Optimizations........................................................................ 348
27. Port Input/Output ................................................................................................. 351
27.1. Port I/O Modes of Operation.......................................................................... 352
27.1.1. Port Pins Configured for Analog I/O...................................................... 352
27.1.2. Port Pins Configured For Digital I/O...................................................... 352
27.1.3. Interfacing Port I/O to High Voltage Logic............................................. 353
27.1.4. Increasing Port I/O Drive Strength ........................................................ 353
27.2. Assigning Port I/O Pins to Analog and Digital Functions............................... 353
27.2.1. Assigning Port I/O Pins to Analog Functions ........................................ 353
27.2.2. Assigning Port I/O Pins to Digital Functions.......................................... 354
27.2.3. Assigning Port I/O Pins to External Digital Event Capture Functions ... 354
27.3. Priority Crossbar Decoder ............................................................................. 355
27.4. Port Match ..................................................................................................... 361
27.5. Special Function Registers for Accessing and Configuring Port I/O ............. 363
28. SMBus................................................................................................................... 381
28.1. Supporting Documents .................................................................................. 382
28.2. SMBus Configuration..................................................................................... 382
Rev. 1.0
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