C8051F040-TB Silicon Laboratories Inc, C8051F040-TB Datasheet - Page 284
C8051F040-TB
Manufacturer Part Number
C8051F040-TB
Description
BOARD PROTOTYPING W/C8051F040
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F040-TB
Contents
Board
Processor To Be Evaluated
C8051F04x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F040
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Table 22.1. Timer Settings for Standard Baud Rates Using the Internal 24.5 MHz
Table 22.2. Timer Settings for Standard Baud Rates Using an External 25.0 MHz
Baud Rate
Baud Rate
230400
115200
Target
230400
115200
57600
28800
14400
57600
28800
14400
Target
57600
28800
14400
(bps)
9600
2400
1200
9600
(bps)
9600
2400
1200
X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
Baud Rate
Baud Rate
% Error
% Error
-0.47%
-0.01%
-0.01%
-0.01%
-0.47%
-0.47%
0.45%
0.45%
0.15%
0.45%
0.45%
0.15%
-0.32%
-0.32%
-0.32%
-0.32%
-0.32%
0.15%
0.15%
0.15%
Oscillator
Oscillator
Divide
Factor
10464
20832
Factor
Divide
10176
20448
1736
2608
1744
2608
1704
2544
108
218
434
872
432
864
106
212
426
848
Frequency: 24.5 MHz
Frequency: 25.0 MHz
Oscillator
Oscillator
Rev. 1.5
SYSCLK / 48
SYSCLK / 48
Timer Clock
SYSCLK / 4
SYSCLK / 4
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
EXTCLK / 8
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
Timer Clock
SYSCLK / 4
SYSCLK
SYSCLK
SYSCLK
Source
SYSCLK
SYSCLK
SYSCLK
Source
SCA1-SCA0
SCA1-SCA0
(pre-scale
(pre-scale
select)
select)
XX
XX
XX
01
01
11
10
10
11
11
11
11
XX
XX
XX
01
00
00
10
10
Section 23.1
*
Section 23.1
*
T1M
T1M
1
1
1
0
0
0
0
0
1
0
1
1
0
0
0
0
0
0
0
0
*
*
.
.
Value (hex)
Timer 1
Reload
Timer 1
Reload
Value
0xCB
(hex)
0x2B
0xB9
0x2B
0x96
0x96
0x96
0x96
0xCA
0x5D
0xCA
0x5D
0xE5
0x93
0x27
0x93
0x27
0x93
0x27
0x93
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