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C8051F50X Datasheet(PDF) 5 Page - Silicon Laboratories |
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C8051F50X Datasheet(HTML) 5 Page - Silicon Laboratories |
5 / 312 page Rev. 1.1 5 C8051F50x-F51x 18.5. Memory Mode Selection................................................................................ 155 18.5.1. Internal XRAM Only .............................................................................. 155 18.5.2. Split Mode without Bank Select............................................................. 155 18.5.3. Split Mode with Bank Select.................................................................. 156 18.5.4. External Only......................................................................................... 156 18.6. Timing .......................................................................................................... 156 18.6.1. Non-Multiplexed Mode .......................................................................... 158 18.6.1.1. 16-bit MOVX: EMI0CF[4:2] = 101, 110, or 111............................. 158 18.6.1.2. 8-bit MOVX without Bank Select: EMI0CF[4:2] = 101 or 111 ....... 159 18.6.1.3. 8-bit MOVX with Bank Select: EMI0CF[4:2] = 110 ....................... 160 18.6.2. Multiplexed Mode .................................................................................. 161 18.6.2.1. 16-bit MOVX: EMI0CF[4:2] = 001, 010, or 011............................. 161 18.6.2.2. 8-bit MOVX without Bank Select: EMI0CF[4:2] = 001 or 011 ....... 162 18.6.2.3. 8-bit MOVX with Bank Select: EMI0CF[4:2] = 010 ....................... 163 19. Oscillators and Clock Selection ......................................................................... 165 19.1. System Clock Selection................................................................................. 165 19.2. Programmable Internal Oscillator .................................................................. 167 19.2.1. Internal Oscillator Suspend Mode ......................................................... 167 19.3. Clock Multiplier .............................................................................................. 170 19.4. External Oscillator Drive Circuit..................................................................... 172 19.4.1. External Crystal Example...................................................................... 174 19.4.2. External RC Example............................................................................ 175 19.4.3. External Capacitor Example.................................................................. 175 20. Port Input/Output ................................................................................................. 177 20.1. Port I/O Modes of Operation.......................................................................... 178 20.1.1. Port Pins Configured for Analog I/O...................................................... 178 20.1.2. Port Pins Configured For Digital I/O...................................................... 178 20.1.3. Interfacing Port I/O in a Multi-Voltage System ...................................... 179 20.2. Assigning Port I/O Pins to Analog and Digital Functions............................... 179 20.2.1. Assigning Port I/O Pins to Analog Functions ........................................ 179 20.2.2. Assigning Port I/O Pins to Digital Functions.......................................... 179 20.2.3. Assigning Port I/O Pins to External Digital Event Capture Functions ... 180 20.3. Priority Crossbar Decoder ............................................................................. 180 20.4. Port I/O Initialization ...................................................................................... 182 20.5. Port Match ..................................................................................................... 187 20.6. Special Function Registers for Accessing and Configuring Port I/O ............. 191 21. Local Interconnect Network (LIN)....................................................................... 201 21.1. Software Interface with the LIN Controller..................................................... 202 21.2. LIN Interface Setup and Operation................................................................ 202 21.2.1. Mode Definition ..................................................................................... 202 21.2.2. Baud Rate Options: Manual or Autobaud ............................................. 202 21.2.3. Baud Rate Calculations: Manual Mode................................................. 202 21.2.4. Baud Rate Calculations—Automatic Mode ........................................... 204 21.3. LIN Master Mode Operation .......................................................................... 205 21.4. LIN Slave Mode Operation ............................................................................ 206 |
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