C8051F540-TB Silicon Laboratories Inc, C8051F540-TB Datasheet - Page 206

• Manufacturer Part Number: C8051F540-TB
• Description: BOARD PROTOTYPE W/C8051F540
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F540-TB

• Contents: Board
• Processor To Be Evaluated: C8051F54x
• Processor Series: C8051F54x
• Interface Type: USB
• Operating Supply Voltage: 5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With/related Products: C8051F54x
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1672

C8051F54x
A quick reference for typical baud rates and clock frequencies is given in Table 21.1.
206
Target Baud
Rate (bps)
230400
115200
230400
115200
230400
115200
57600
28800
14400
57600
28800
14400
57600
28800
14400
9600
2400
1200
9600
2400
1200
9600
2400
1200
Table 21.1. Baud Rate Generator Settings for Standard Baud Rates
Actual Baud
Baud Rate
Rate (bps)
230769
115385
230769
115385
230769
115385
57554
28812
14397
57692
28777
14406
57692
28846
14388
9600
2400
1200
9600
2400
1200
9600
2400
1200
Equation 21.1. UART0 Baud Rate
=
------------------------------------------------------------------------------

65536 (SBRLH0:SBRLL0)
Baud Rate
0.16%
0.16%
0.08%
0.04%
0.02%
0.00%
0.00%
0.00%
0.16%
0.16%
0.16%
0.08%
0.04%
0.00%
0.00%
0.00%
0.16%
0.16%
0.16%
0.16%
0.08%
0.00%
0.00%
0.00%
Error
–
SYSCLK
Rev. 1.1
Oscillator
Factor
Divide
20000
40000
10000
20000
10000
1666
3334
5000
1666
2500
1250
5000
208
416
834
104
208
416
834
104
208
416
834
52

(Prescaler Bits)
x
SB0PS[1:0]
1
-- -
2
x
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
11
------------------------ -
Prescaler
1
SBRLH0:SBRLL0
Reload Value in
0xFCBF
0xFFCC
0xFCBF
0xFFCC
0xFB1E
0xEC78
0xFD8F
0xEC78
0xFF98
0xFF30
0xFE5F
0xF97D
0xF63C
0xD8F0
0xB1E0
0xFF98
0xFF30
0xFE5F
0xD8F0
0xFFE6
0xFF98
0xFF30
0xFE5F
0xF63C