C8051F064EK Silicon Laboratories Inc, C8051F064EK Datasheet - Page 260

• Manufacturer Part Number: C8051F064EK
• Description: KIT EVAL FOR C8051F064
• Manufacturer: Silicon Laboratories Inc
• Type: MCUr

Specifications of C8051F064EK

• Contents: Evaluation Board, Power Supply, USB Cables, Adapter and Documentation
• Processor To Be Evaluated: C8051F06x
• Interface Type: USB
• Silicon Manufacturer: Silicon Labs
• Core Architecture: 8051
• Silicon Core Number: C8051F064
• Silicon Family Name: C8051F06x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: C8051F064
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 336-1219

C8051F060/1/2/3/4/5/6/7
260
Bits 7-0: SCR7-SCR0: SPI0 Clock Rate.
Example: If SYSCLK = 2 MHz and SPI0CKR = 0x04,
f
SCK
SCR7
f
SCK
R/W
Bit7
=
=
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 version of the system
clock, and is given in the following equation, where SYSCLK is the system clock frequency
and SPI0CKR is the 8-bit value held in the SPI0CKR register.
for 0 <= SPI0CKR <= 255
200kHz
f
SCK
------------------------- -
2
2000000

SCR6
R/W
Bit6

=
4
+
------------------------------------------------ -
2

1


Figure 21.10. SPI0CKR: SPI0 Clock Rate Register
SPI0CKR
SCR5
SYSCLK
R/W
Bit5
SCR4
+
R/W
Bit4
1

Rev. 1.2
SCR3
R/W
Bit3
SCR2
R/W
Bit2
SCR1
R/W
Bit1
SFR Address:
SFR Page:
SCR0
R/W
Bit0
0x9D
0
Reset Value
00000000