C8051F040DK Silicon Laboratories Inc, C8051F040DK Datasheet - Page 282

• Manufacturer Part Number: C8051F040DK
• Description: DEV KIT FOR F040/F041/F042/F043
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F040DK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F04x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F040
• Silicon Family Name: C8051F04x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: Silicon Laboratories C8051 F040, 041, 042, 043 MCUs
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1205

C8051F040/1/2/3/4/5/6/7
282
Bit7:
Bit6:
Bit5:
Bit4:
Bit3:
Bit2:
Bit1:
Bit0:
S1MODE
R/W
Bit7
S1MODE: Serial Port 1 Operation Mode.
This bit selects the UART1 Operation Mode.
0: Mode 0: 8-bit UART with Variable Baud Rate
1: Mode 1: 9-bit UART with Variable Baud Rate
UNUSED. Read = 1b. Write = don’t care.
MCE1: Multiprocessor Communication Enable.
The function of this bit is dependent on the Serial Port 0 Operation Mode.
Mode 0: Checks for valid stop bit.
Mode 1: Multiprocessor Communications Enable.
REN1: Receive Enable.
This bit enables/disables the UART receiver.
0: UART1 reception disabled.
1: UART1 reception enabled.
TB81: Ninth Transmission Bit.
The logic level of this bit will be assigned to the ninth transmission bit in 9-bit UART Mode. It
is not used in 8-bit UART Mode. Set or cleared by software as required.
RB81: Ninth Receive Bit.
RB81 is assigned the value of the STOP bit in Mode 0; it is assigned the value of the 9th
data bit in Mode 1.
TI1: Transmit Interrupt Flag.
Set by hardware when a byte of data has been transmitted by UART1 (after the 8th bit in 8-
bit UART Mode, or at the beginning of the STOP bit in 9-bit UART Mode). When the UART1
interrupt is enabled, setting this bit causes the CPU to vector to the UART1 interrupt service
routine. This bit must be cleared manually by software.
RI1: Receive Interrupt Flag.
Set to ‘1’ by hardware when a byte of data has been received by UART1 (set at the STOP
bit sampling time). When the UART1 interrupt is enabled, setting this bit to ‘1’ causes the
CPU to vector to the UART1 interrupt service routine. This bit must be cleared manually by
software.
R/W
Bit6
-
0: Logic level of stop bit is ignored.
1: RI1 will only be activated if stop bit is logic level 1.
0: Logic level of ninth bit is ignored.
1: RI1 is set and an interrupt is generated only when the ninth bit is logic 1.
SFR Definition 22.1. SCON1: Serial Port 1 Control
MCE1
R/W
Bit5
REN1
R/W
Bit4
Rev. 1.5
TB81
R/W
Bit3
RB81
R/W
Bit2
R/W
TI1
Bit1
SFR Address:
SFR Page:
R/W
RI1
Bit0
0x98
1
01000000
Addressable
Reset Value
Bit