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EFM8UB2 Reference Manual Universal Asynchronous Receiver/Transmitter 1 (UART1) 21.4.6 SBRLL1: UART1 Baud Rate Generator Low Byte Bit 7 6 5 4 3 Name BRL Access RW Reset 0x00 2 1 0 SFR Page = ALL; SFR Address: 0xB4 Bit Name Reset Access Description 7:0 BRL 0x00 RW UART1 Baud Rate Reload Low. This field is the low byte of the 16-bit UART1 baud rate generator. The high byte of the baud rate generator should be written first, then the low byte. The baud rate is determined by the following equation: Baud Rate = (SYSCLK / (65536 - BRH1:BRL1)) * ((1 / 2) * (1 / Prescaler)) silabs.com | Smart. Connected. Energy-friendly. Rev. 0.2 | 291
