C8051F120 Datasheet, PDF (7/356 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F120/1/2/3/4/5/6/7
C8051F130/1/2/3
20.1.4.Slave Select (NSS) ................................................................................ 278
20.2.SPI0 Master Mode Operation ......................................................................... 279
20.3.SPI0 Slave Mode Operation ........................................................................... 281
20.4.SPI0 Interrupt Sources ................................................................................... 281
20.5.Serial Clock Timing......................................................................................... 282
20.6.SPI Special Function Registers ...................................................................... 284
21. UART0.................................................................................................................... 291
21.1.UART0 Operational Modes ............................................................................ 292
21.1.1.Mode 0: Synchronous Mode .................................................................. 292
21.1.2.Mode 1: 8-Bit UART, Variable Baud Rate.............................................. 293
21.1.3.Mode 2: 9-Bit UART, Fixed Baud Rate .................................................. 295
21.1.4.Mode 3: 9-Bit UART, Variable Baud Rate.............................................. 296
21.2.Multiprocessor Communications .................................................................... 297
21.2.1.Configuration of a Masked Address ....................................................... 297
21.2.2.Broadcast Addressing ............................................................................ 297
21.3.Frame and Transmission Error Detection....................................................... 298
22. UART1.................................................................................................................... 303
22.1.Enhanced Baud Rate Generation................................................................... 304
22.2.Operational Modes ......................................................................................... 305
22.2.1.8-Bit UART ............................................................................................. 305
22.2.2.9-Bit UART ............................................................................................. 306
22.3.Multiprocessor Communications .................................................................... 307
23. Timers.................................................................................................................... 313
23.1.Timer 0 and Timer 1 ....................................................................................... 313
23.1.1.Mode 0: 13-bit Counter/Timer ................................................................ 313
23.1.2.Mode 1: 16-bit Counter/Timer ................................................................ 314
23.1.3.Mode 2: 8-bit Counter/Timer with Auto-Reload...................................... 315
23.1.4.Mode 3: Two 8-bit Counter/Timers (Timer 0 Only)................................. 316
23.2.Timer 2, Timer 3, and Timer 4 ........................................................................ 322
23.2.1.Configuring Timer 2, 3, and 4 to Count Down........................................ 322
23.2.2.Capture Mode ........................................................................................ 323
23.2.3.Auto-Reload Mode ................................................................................. 324
23.2.4.Toggle Output Mode (Timer 2 and Timer 4 Only) .................................. 324
24. Programmable Counter Array ............................................................................. 331
24.1.PCA Counter/Timer ........................................................................................ 332
24.2.Capture/Compare Modules ............................................................................ 333
24.2.1.Edge-triggered Capture Mode................................................................ 334
24.2.2.Software Timer (Compare) Mode........................................................... 335
24.2.3.High Speed Output Mode....................................................................... 336
24.2.4.Frequency Output Mode ........................................................................ 337
24.2.5.8-Bit Pulse Width Modulator Mode......................................................... 338
24.2.6.16-Bit Pulse Width Modulator Mode....................................................... 339
24.3.Register Descriptions for PCA0...................................................................... 340
25. JTAG (IEEE 1149.1) .............................................................................................. 345
25.1.Boundary Scan ............................................................................................... 346
Rev. 1.3
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