Rev. 1.4 5
C8051F52x/F53x
14.2.2. External Crystal Example...................................................................... 139
14.2.3. External RC Example............................................................................ 141
14.2.4. External Capacitor Example.................................................................. 141
14.3. System Clock Selection................................................................................. 143
15. UART0................................................................................................................... 144
15.1. Enhanced Baud Rate Generation.................................................................. 145
15.2. Operational Modes ........................................................................................ 146
15.2.1. 8-Bit UART............................................................................................ 146
15.2.2. 9-Bit UART............................................................................................ 147
15.3. Multiprocessor Communications ................................................................... 148
16. Enhanced Serial Peripheral Interface (SPI0) ..................................................... 151
16.1. Signal Descriptions........................................................................................ 152
16.1.1. Master Out, Slave In (MOSI)................................................................. 152
16.1.2. Master In, Slave Out (MISO)................................................................. 152
16.1.3. Serial Clock (SCK) ................................................................................ 152
16.1.4. Slave Select (NSS) ............................................................................... 152
16.2. SPI0 Master Mode Operation........................................................................ 153
16.3. SPI0 Slave Mode Operation.......................................................................... 154
16.4. SPI0 Interrupt Sources .................................................................................. 155
16.5. Serial Clock Timing........................................................................................ 156
16.6. SPI Special Function Registers..................................................................... 156
17. LIN (C8051F520/0A/3/3A/6/6A and C8051F530/0A/3/3A/6/6A) .......................... 164
17.1. Software Interface with the LIN Peripheral.................................................... 165
17.2. LIN Interface Setup and Operation................................................................ 165
17.2.1. Mode Definition ..................................................................................... 165
17.2.2. Baud Rate Options: Manual or Autobaud ............................................. 165
17.2.3. Baud Rate Calculations—Manual Mode ............................................... 165
17.2.4. Baud Rate Calculations—Automatic Mode........................................... 168
17.3. LIN Master Mode Operation .......................................................................... 169
17.4. LIN Slave Mode Operation ............................................................................ 170
17.5. Sleep Mode and Wake-Up ............................................................................ 171
17.6. Error Detection and Handling ........................................................................ 171
17.7. LIN Registers................................................................................................. 172
17.7.1. LIN Direct Access SFR Registers Definition ......................................... 172
17.7.2. LIN Indirect Access SFR Regis
ters Definition....................................... 174
18. Timers ................................................................................................................... 182
18.1. Timer 0 and Timer 1 ...................................................................................... 182
18.1.1. Mode 0: 13-bit Counter/Timer ............................................................... 182
18.1.2. Mode 1: 16-bit Counter/Timer ............................................................... 184
18.1.3. Mode 2: 8-bit Counter/Timer with Auto-Reload..................................... 184
18.1.4. Mode 3: Two 8-bit Counter/Timers (Timer 0 Only)................................ 185
18.2. Timer 2 .......................................................................................................... 190
18.2.1. 16-bit Timer with Auto-Reload............................................................... 190
18.2.2. 8-bit Timers with Auto-Reload............................................................... 191
18.2.3. External Capture Mode ......................................................................... 192
