C8051F020-TB Silicon Laboratories Inc, C8051F020-TB Datasheet - Page 205
![BOARD PROTOTYPING W/C8051F020](/photos/28/94/289414/tqfp-100_sml.jpg)
C8051F020-TB
Manufacturer Part Number
C8051F020-TB
Description
BOARD PROTOTYPING W/C8051F020
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Specifications of C8051F020-TB
Contents
Board
Processor To Be Evaluated
C8051F02x
Interface Type
USB
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
C8051F020
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 205 of 272
- Download datasheet (2Mb)
20.
UART0 is an enhanced serial port with frame error detection and address recognition hardware. UART0 may operate
in full-duplex asynchronous or half-duplex synchronous modes, and mutiproccessor communication is fully sup-
ported. Receive data is buffered in a holding register, allowing UART0 to start reception of a second incoming data
byte before software has finished reading the previous data byte. A Receive Overrun bit indicates when new received
data is latched into the receive buffer before the previous received byte is read.
UART0 is accessed via its associated SFRs, Serial Control (SCON0) and Serial Data Buffer (SBUF0). The single
SBUF0 location provides access to both transmit and receive registers. Reads access the Receive register and writes
access the Transmit register automatically.
UART0 may be operated in polled or interrupt mode. UART0 has two sources of interrupts: a Transmit Interrupt flag,
TI0 (SCON0.1) set when transmission of a data byte is complete, and a Receive Interrupt flag, RI0 (SCON0.0) set
when reception of a data byte is complete. UART0 interrupt flags are not cleared by hardware when the CPU vectors
to the interrupt service routine; they must be cleared manually by software. This allows software to determine the
cause of the UART0 interrupt (transmit complete or receive complete).
Generation
Baud Rate
UART0
UART
Logic
Write to
SBUF
Figure 20.1. UART0 Block Diagram
Tx Clock
Rx Clock
Start
Stop Bit
Start
Frame Error
Gen.
Detection
Load SBUF
D
TB8
SET
CLR
(Receive Latch)
Q
Shift
M
S
0
SFR Bus
M
S
1
SBUF
Tx Control
Rx Control
M
S
2
SCON
Shift
Input Shift Register
EN
(Transmit Shift)
R
E
N
Zero Detector
T
B
8
SFR Bus
SBUF
R
B
8
(9 bits)
Tx IRQ
T
I
Rx IRQ
SBUF
Read
R
I
0x1FF
Match Detect
Rev. 1.4
Address
TI
SBUF
Match
RI
Send
Load
Data
RB8
SADDR
SADEN
RX
TX
C8051F020/1/2/3
Crossbar
Crossbar
Serial Port
(UART0/1)
Interrupt
Port I/O
205
Related parts for C8051F020-TB
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![500SAAB8M00000ACF](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
SMD/C°/SINGLE-ENDED OUTPUT SILICON OSCILLATOR
Manufacturer:
Silicon Laboratories Inc
![SI3210MFT](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![4010-DAAKF_868](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A N/A/SI4010 AES KEYFOB DEMO WITH LCD RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![4010-DASKF_868](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A N/A/SI4010 SIMPLIFIED KEY FOB DEMO WITH LED RX
Manufacturer:
Silicon Laboratories Inc
Datasheet:
![4432-SEB1 C 915](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A/-40 TO 85 OC/EZLINK MODULE; F930/4432 HIGH BAND (REV E/B1)
Manufacturer:
Silicon Laboratories Inc
![4432-SEB1 D 470](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
EZLink Module; F930/4432 Low Band (rev e/B1)
Manufacturer:
Silicon Laboratories Inc
![4460-TCE10D434-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4460 10 DBM RADIO TEST CARD 434 MHZ
Manufacturer:
Silicon Laboratories Inc
![4461-TSQ14D868-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4461 14 DBM RADIO TEST CARD 868 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE20C460-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4463 20 DBM RFSWITCH RADIO TEST CARD 460 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE20C868-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4463 20 DBM RADIO TEST CARD 868 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE27F868-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4463 27 DBM RADIO TEST CARD 868 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE30E915S-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4463 SKYWORKS 30 DBM RADIO TEST CARD 915 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TCE30E915R-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
N/A N/A/-40 TO 85 OC/4463 RFMD 30 DBM RADIO TEST CARD 915 MHZ
Manufacturer:
Silicon Laboratories Inc
![4463-TSQ20D169-EK](/images/manufacturer_photos/0/6/609/silicon_laboratories_inc_tmb.jpg)
Part Number:
Description:
I°/4463 20 DBM RADIO TEST CARD 169 MHZ
Manufacturer:
Silicon Laboratories Inc