C8051F85X86X Datasheet, PDF (220/290 Pages) Silicon Laboratories – Low-Cost 8-bit MCU Family with up to 8 kB of Flash

C8051F85x/86x
Register 23.3. SPI0CKR: SPI0 Clock Rate
Bit
7
6
5
4
3
2
1
0
Name
SPI0CKR
Type
RW
Reset
0
0
0
0
0
0
0
0
SFR Address: 0xA2
Table 23.4. SPI0CKR Register Bit Descriptions
Bit
Name
Function
7:0
SPI0CKR SPI0 Clock Rate.
These bits determine the frequency of the SCK output when the SPI0 module is config-
ured 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.
f_SCK = _2----------_--S-S---PY---I-S-0---CC----LK----KR------+-----1---_
for 0 <= SPI0CKR <= 255
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Preliminary Rev 0.6