STC8A8K64D4 Series Manual
14.1 UART function pin switch ..................................................................................................................372
14.2 Registers Related to UARTs ...............................................................................................................372
14.3 UART1 373
14.3.1 UART1 control register .............................................................................................................373
14.3.2 UART1 data register ..................................................................................................................373
14.3.3 Power control register ................................................................................................................374
14.3.4 Auxiliary register 1 ....................................................................................................................374
14.3.5 UART1 Mode 0 .........................................................................................................................374
14.3.6 UART1 Mode 1 .........................................................................................................................375
14.3.7 UART1 Mode 2 .........................................................................................................................377
14.3.8 UART1 Mode 3 .........................................................................................................................378
14.3.9 Automatic Address Recognition ................................................................................................379
14.3.10 UART1 slave address control registers ....................................................................................379
14.4 UART2 380
14.4.1 UART2 control register .............................................................................................................380
14.4.2 UART2 data register .................................................................................................................380
14.4.3 UART2 Mode 0 .........................................................................................................................380
14.4.4 UART2 Mode 1 .........................................................................................................................381
14.5 UART3 383
14.5.1 UART3 control register .............................................................................................................383
14.5.2 UART3 data register ..................................................................................................................383
14.5.3 UART3 Mode 0 .........................................................................................................................383
14.5.4 UART3 Mode 1 .........................................................................................................................384
14.6 UART4 386
14.6.1 UART4 control register .............................................................................................................386
14.6.2 UART4 data register ..................................................................................................................386
14.6.3 UART4 Mode 0 .........................................................................................................................386
14.6.4 UART4 Mode 1 .........................................................................................................................387
14.7 Precautions of UARTs .........................................................................................................................389
14.8 Example Routines ...............................................................................................................................389
14.8.1 UART1 using T2 as baud rate generator ...................................................................................389
14.8.2 UART1 using T1 (Mode 0) as baud rate generator ....................................................................393
14.8.3 UART1 using T1 (Mode 2) as baud rate generator ....................................................................397
14.8.4 UART2 using T2 as baud rate generator ...................................................................................401
14.8.5 UART3 using T2 as baud rate generator ...................................................................................405
14.8.6 UART3 using T3 as baud rate generator ...................................................................................409
14.8.7 UART4 using T2 as baud rate generator ...................................................................................414
14.8.8 UART4 using T4 as baud rate generator ...................................................................................418
14.8.9 Serial multi-MCUs communication ...........................................................................................422
14.8.10 UART to LIN BUS ..................................................................................................................423
15 Comparator, Power-down Detection, Internal Reference Voltage .........................................................433
15.1 Comparator output pin switching ........................................................................................................433
15.2 Internal Structure of Comparator ........................................................................................................433
15.3 Registers Related to Comparator ........................................................................................................434
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