C8051F020DK Silicon Laboratories Inc, C8051F020DK Datasheet - Page 203
C8051F020DK
Manufacturer Part Number
C8051F020DK
Description
DEV KIT FOR F020/F021/F022/F023
Manufacturer
Silicon Laboratories Inc
Type
MCUr
Datasheet
1.C8051F020DK.pdf
(272 pages)
Specifications of C8051F020DK
Contents
Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
Processor To Be Evaluated
C8051F02x
Interface Type
USB
Silicon Manufacturer
Silicon Labs
Core Architecture
8051
Silicon Core Number
C8051F020
Silicon Family Name
C8051F02x
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Silicon Laboratories C8051 F020/021/022/023
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
336-1200
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
C8051F020DK
Manufacturer:
SiliconL
Quantity:
10
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Bits7-0:
Bits7-0:
SCR7
R/W
R/W
Bit7
Bit7
SCR7-SCR0: SPI0 Clock Rate
These bits determine the frequency of the SCK output when the SPI0 module is configured for master
mode operation. The SCK clock frequency is a divided down version of the system clock, and is
given in the following equation, where SYSCLK is the system clock frequency and SPI0CR is the 8-
bit value held in the SPI0CR register.
f
for 0 <= SPI0CKR <= 255
Example: If SYSCLK = 2 MHz and SPI0CKR = 0x04,
f
f
SPI0DAT: SPI0 Transmit and Receive Data.
The SPI0DAT register is used to transmit and receive SPI0 data. Writing data to SPI0DAT places the
data immediately into the shift register and initiates a transfer when in Master Mode. A read of
SPI0DAT returns the contents of the receive buffer.
SCK
SCK
SCK
SCR6
R/W
R/W
Bit6
Bit6
=
=
=
------------------------------------------------ -
2
------------------------- -
2
200kHz
2000000
Figure 19.7. SPI0CKR: SPI0 Clock Rate Register
SPI0CKR
4
SYSCLK
SCR5
Figure 19.8. SPI0DAT: SPI0 Data Register
R/W
R/W
Bit5
+
Bit5
1
+
SCR4
R/W
R/W
Bit4
Bit4
1
SCR3
R/W
R/W
Bit3
Bit3
Rev. 1.4
SCR2
R/W
R/W
Bit2
Bit2
SCR1
C8051F020/1/2/3
R/W
R/W
Bit1
Bit1
SCR0
R/W
R/W
Bit0
Bit0
SFR Address:
SFR Address:
00000000
00000000
Reset Value
Reset Value
0x9D
0x9B
203
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