C8051F040DK Silicon Laboratories Inc, C8051F040DK Datasheet - Page 270
![DEV KIT FOR F040/F041/F042/F043](/photos/9/25/92582/c8051f040dk_sml.jpg)
C8051F040DK
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F040DK
Manufacturer:
SiliconL
Quantity:
9
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C8051F040/1/2/3/4/5/6/7
21.1.4. Mode 3: 9-Bit UART, Variable Baud Rate
Mode 3 uses the Mode 2 transmission protocol with the Mode 1 baud rate generation. Mode 3 operation
transmits 11 bits: a start bit, 8 data bits (LSB first), a programmable ninth data bit, and a stop bit. The baud
rate is derived from Timer 1 or Timer 2, 3, or 4 overflows, as defined by Equation 21.1 and Equation 21.3.
Multiprocessor communications and hardware address recognition are supported, as described in
Section
21.2.
21.2. Multiprocessor Communications
Modes 2 and 3 support multiprocessor communication between a master processor and one or more slave
processors by special use of the ninth data bit and the built-in UART0 address recognition hardware. When
a master processor wants to transmit to one or more slaves, it first sends an address byte to select the tar-
get(s). An address byte differs from a data byte in that its ninth bit is logic 1; in a data byte, the ninth bit is
always set to logic 0. UART0 will recognize as “valid” (i.e., capable of causing an interrupt) two types of
addresses: (1) a masked address and (2) a broadcast address at any given time. Both are described
below.
270
Rev. 1.5
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