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Renesas RL78 Series User Manual

Renesas RL78 Series
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RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 977
Dec 10, 2015
15.7.3 Calculating baud rate
(1) Baud rate calculation expression
The baud rate for UART (UART0, UART1) communication can be calculated by the following expressions.
(Baud rate) = {Operation clock (fMCK) frequency of target channel} ÷ (SDRmn[15:9] + 1) ÷ 2 [bps]
Caution Setting serial data register mn (SDRmn) SDRmn[15:9] = (0000000B, 0000001B) is prohibited.
Remarks 1. When UART is used, the value of SDRmn[15:9] is the value of bits 15 to 9 of the SDRmn register
(0000010B to 1111111B) and therefore is 2 to 127.
2. m: Unit number (m = 0, 1), n: Channel number (n = 0, 1), mn = 00, 01, 10, 11
The operation clock (f
MCK) is determined by serial clock select register m (SPSm) and bit 15 (CKSmn) of serial mode
register mn (SMRmn).

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Renesas RL78 Series Specifications

General IconGeneral
BrandRenesas
ModelRL78 Series
CategoryComputer Hardware
LanguageEnglish

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