C8051F040-TB Silicon Laboratories Inc, C8051F040-TB Datasheet - Page 275
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
- Current page: 275 of 328
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Bit7:
Bit6:
Bit5:
Bit4:
Bits3-2:
Bits1-0:
FE0
R/W
Bit7
FE0: Frame Error Flag.
This flag indicates if an invalid (low) STOP bit is detected.
0: Frame Error has not been detected
1: Frame Error has been detected.
RXOV0: Receive Overrun Flag.
This flag indicates new data has been latched into the receive buffer before software has
read the previous byte.
0: Receive overrun has not been detected.
1: Receive Overrun has been detected.
TXCOL0: Transmit Collision Flag.
This flag indicates user software has written to the SBUF0 register while a transmission is in
progress.
0: Transmission Collision has not been detected.
1: Transmission Collision has been detected.
SMOD0: UART0 Baud Rate Doubler Enable.
This bit enables/disables the divide-by-two function of the UART0 baud rate logic for config-
urations described in the UART0 section.
0: UART0 baud rate divide-by-two enabled.
1: UART0 baud rate divide-by-two disabled.
UART0 Transmit Baud Rate Clock Selection Bits.
UART0 Receive Baud Rate Clock Selection Bits
SFR Definition 21.2. SSTA0: UART0 Status and Clock Selection
S0RCLK1 S0RCLK0
S0TCLK1
RXOV0
0
0
1
1
0
0
1
1
R/W
Bit6
S0TCLK0
TXCOL0 SMOD0 S0TCLK1 S0TCLK0 S0RCLK1 S0RCLK0 00000000
R/W
Bit5
0
1
0
1
0
1
0
1
Timer 2 Overflow generates UART0 RX baud rate
Timer 3 Overflow generates UART0 RX baud rate
Timer 4 Overflow generates UART0 RX baud rate
Timer 2 Overflow generates UART0 TX baud rate
Timer 3 Overflow generates UART0 TX baud rate
Timer 4 Overflow generates UART0 TX baud rate
R/W
Bit4
Serial Transmit Baud Rate Clock Source
Serial Receive Baud Rate Clock Source
Timer 1 generates UART0 RX Baud Rate
Timer 1 generates UART0 TX Baud Rate
Rev. 1.5
R/W
Bit3
C8051F040/1/2/3/4/5/6/7
R/W
Bit2
R/W
Bit1
SFR Address:
SFR Page:
R/W
Bit0
0x91
0
Reset Value
275
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