C8051F530-TB Silicon Laboratories Inc, C8051F530-TB Datasheet - Page 165

• Manufacturer Part Number: C8051F530-TB
• Description: BOARD PROTOTYPE W/C8051F530
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F530-TB

• Contents: Board
• Processor To Be Evaluated: C8051F52xA and C8051F53xA
• Interface Type: USB
• Lead Free Status / RoHS Status: Vendor undefined / Vendor undefined
• For Use With/related Products: C8051F530
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Important: The minimum system clock (SYSCLK) to operate the LIN peripheral is 8 MHz.
Use the following equations to calculate the values for the variables for the baud-rate equation:
It is important to note that in all these equations, the results must be rounded down to the nearest integer.
The following example shows the steps for calculating the baud rate values for a Master node running at
24.5 MHz and communicating at 19200 bits/sec. First, calculate the multiplier:
Next, calculate the prescaler:
Finally, calculate the divider:
These values lead to the following baud rate:
prescaler
prescaler
divider
divider
Table 17.1. Baud-Rate Calculation Variable Ranges
baud_rate
=
=
multiplier
=
ln
=
------------------------------------------------------------------------------------------------------------------- -

2
ln
prescaler
------------------------------------------------------------ -
2
multiplier

----------------------------------------------------------------------------------------- -

multiplier
prescaler
Factor
divider

multiplier
-----------------------------------------------------

1
0
+
=
+
C8051F52x/F52xA/F53x/F53xA
1

------------------------------------------------------ -
2
1


24500000
+
24500000

1
=

1

+
0

1
20000
-------------- - 1
19200
19200 200

+

Rev. 1.3
24500000
=
+


1
SYSCLK
multiplier
1


-------------------------- - 1
baud_rate
0
 baud_rate 200

SYSCLK

+
20000
–

19200
1
200…511

Range
=
0…31
0…3

0.0417 0

319
+
=
------- - 1
ln2
–
1
1
319.010 319


–

19200.63


baud_rate
=
1.674


------- - 1
ln2
1


1
–
165