C8051F120-TB Silicon Laboratories Inc, C8051F120-TB Datasheet - Page 305
C8051F120-TB
Manufacturer Part Number
C8051F120-TB
Description
BOARD PROTOTYPING W/C8051F120
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F120-TB
Contents
Board
Processor To Be Evaluated
C8051F12x and C8051F13x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F120
Silicon Family Name
C8051F12x
Kit Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F120
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F120-TB
Manufacturer:
Silicon Labs
Quantity:
135
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Table 22.1. Timer Settings for Standard Baud Rates Using The Internal 24.5 MHz
Bits7–0: SBUF1[7:0]: Serial Data Buffer Bits 7-0 (MSB-LSB)
R/W
Bit7
X = Don’t care
*Note: SCA1-SCA0 and T1M bit definitions can be found in
Baud Rate
This SFR accesses two registers; a transmit shift register and a receive latch register. When
data is written to SBUF1, it goes to the transmit shift register and is held for serial transmis-
sion. Writing a byte to SBUF1 is what initiates the transmission. A read of SBUF1 returns the
contents of the receive latch.
230400
115200
Target
57600
28800
14400
(bps)
9600
2400
1200
SFR Definition 22.2. SBUF1: Serial (UART1) Port Data Buffer
R/W
Bit6
Baud Rate
% Error
-0.32%
-0.32%
-0.32%
-0.32%
-0.32%
0.15%
0.15%
0.15%
R/W
Bit5
tor Divide
R/W
Bit4
Oscilla-
Factor
10176
20448
1704
2544
106
212
426
848
Frequency: 24.5 MHz
Oscillator
Rev. 1.4
SYSCLK / 12
SYSCLK / 12
SYSCLK / 48
SYSCLK / 48
R/W
Timer Clock
Bit3
SYSCLK / 4
SYSCLK
SYSCLK
SYSCLK
Source
C8051F120/1/2/3/4/5/6/7
R/W
Bit2
Section 23.1
SCA1-SCA0
(pre-scale
select)*
C8051F130/1/2/3
XX
XX
XX
01
00
00
10
10
R/W
Bit1
.
SFR Address:
SFR Page:
T1M*
R/W
Bit0
1
1
1
0
0
0
0
0
Value (hex)
0x99
1
00000000
Reset Value
Timer 1
Reload
0xCB
0x2B
0xB9
0x2B
0x96
0x96
0x96
0x96
305
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