C8051F54X_14 Datasheet, PDF (139/275 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F54x
SFR Definition 17.3. OSCICRS: Internal Oscillator Coarse Calibration
Bit
7
6
5
4
3
2
1
0
Name
OSCICRS[6:0]
Type
R
R/W
Reset
0
Varies
Varies
Varies
Varies
Varies
Varies
Varies
SFR Address = 0xA2; SFR Page = 0x0F;
Bit
Name
Function
7
Unused
Read = 0; Write = Don’t Care
6:0 OSCICRS[6:0] Internal Oscillator Coarse Calibration Bits.
These bits determine the internal oscillator period. When set to 0000000b, the
internal oscillator operates at its slowest setting. When set to 1111111b, the inter-
nal oscillator operates at its fastest setting. The reset value is factory calibrated
to generate an internal oscillator frequency of 24 MHz.
SFR Definition 17.4. OSCIFIN: Internal Oscillator Fine Calibration
Bit
7
6
5
4
3
2
1
0
OSCIFIN[5:0]
Type
R
R
R/W
Reset
0
0
Varies
Varies
Varies
Varies
Varies
Varies
SFR Address = 0x9E; SFR Page = 0x0F;
Bit
Name
Function
7:6 Unused Read = 00b; Write = Don’t Care
5:0 OSCIFIN[5:0] Internal Oscillator Fine Calibration Bits.
These bits are fine adjustment for the internal oscillator period. The reset value is
factory calibrated to generate an internal oscillator frequency of 24 MHz.
Rev. 1.1
139