z8fmc16100 ZiLOG Semiconductor, z8fmc16100 Datasheet - Page 152

• Manufacturer Part Number: z8fmc16100
• Description: Z8 Encore Motor Control Flash Mcus
• Manufacturer: ZiLOG Semiconductor

PS024611-0408
Table 78. LIN-UART Baud Rates, 20.0 MHz System Clock
Applicable
Rate (kHz)
1250.0
625.0
250.0
115.2
57.6
38.4
19.2
(Decimal)
UART Baud Rate Error (%)
Divisor
For a given LIN-UART data rate, the integer baud rate divisor value is calculated using the
following equation for standard UART operation:
For a given LIN-UART data rate, the integer baud rate divisor value is calculated using the
following equation for LIN mode UART operation:
The baud rate error relative to the appropriate baud rate is calculated using the following
equation:
For reliable communication, the LIN-UART baud rate error must never exceed 5 percent.
Table 78
crystal oscillator frequencies for normal UART modes of operation.
UART Baud Rate Divisor Value
UART Baud Rate Divisor Value s
BRG
11
22
33
65
1
2
5
through
Actual Rate
1250.0
113.64
625.0
250.0
56.82
37.88
19.23
(kHz)
Table 82
Error
–1.19
–1.36
–1.36
0.00
0.00
0.00
0.16
(%)
provide error data for popular baud rates and commonly-used
=
100
=
x
⎛
⎝
Round
=
Actual Data Rate Desired Data Rate
-------------------------------------------------------------------------------------------------------- -
Round
Applicable
Rate (kHz)
LIN-UART Baud Rate High and Low Byte Registers
⎛
⎝
9.60
4.80
2.40
1.20
0.60
0.30
System Clock Frequency (Hz)
----------------------------------------------------------------------------------- -
16xUART Data Rate (bits/s)
⎛
⎝
Desired Data Rate
System Clock Frequency (Hz)
----------------------------------------------------------------------------------- -
UART Data Rate (bits/s)
Z8FMC16100 Series Flash MCU
(Decimal)
–
Divisor
BRG
1042
2083
4167
130
260
521
Product Specification
Actual Rate
(kHz)
2.399
1.199
0.299
9.62
4.81
0.60
⎞
⎠
⎞
⎠
⎞
⎠
Error
–0.03
–0.03
–0.01
0.16
0.16
0.02
(%)
140