Z8F1680SH020SG Datasheet, PDF (203/412 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F1680 Series
Product Specification
178
Table 95. LIN-UART Baud Rate Low Byte Register (U0BRL = F47H)
Bit
7
6
5
4
3
2
1
0
Field
BRL
Reset
1
1
1
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
F47H, F4FH
Note: R/W = Read/Write.
Bit Position
[7:0]
BRL
Value Description
— Baud Rate Low
These bits set the Low Byte of the baud rate divisor value.
The LIN-UART data rate is calculated using the following equation for standard UART
modes. For the LIN protocol, the Baud Rate registers must be programmed with the baud
period rather than 1/16th of the baud period.
Note: The UART must be disabled when updating the Baud Rate registers because the High and
Low registers must be written independently.
The LIN-UART data rate is calculated using the following equation for standard UART
operation:
System Clock Frequency (Hz)
UART Data Rate (bits/s) =
16 x UART Baud Rate Divisor Value
The LIN-UART data rate is calculated using the following equation for LIN mode UART
operation:
= System Clock Frequency (Hz)
UART Data Rate (bits/s)
UART Baud Rate Divisor Value
For a given LIN-UART data rate, the integer baud rate divisor value is calculated using the
following equation for standard UART operation:
UART Baud Rate Divisor Value (BRG) = Round_^{S---1-y--6-s---xt--e-U--m---A----RC----Tl--o---cD---k--a---Ft--a--r--e-R--q--a-u--t--ee---n--(-c-b--y-i--t-s-(--H/--s--z-)--)-}_
PS025015-1212
PRELIMINARY
LIN-UART