C8051F581-IMR Silicon Labs, C8051F581-IMR Datasheet - Page 178

• Manufacturer Part Number: C8051F581-IMR
• Description: 8-bit Microcontrollers - MCU 50MIPS 128kB 8kB SPI
• Manufacturer: Silicon Labs

Specifications of C8051F581-IMR

• Rohs: yes
• Core: 8051
• Processor Series: C8051
• Data Bus Width: 8 bit

C8051F58x/F59x
SFR Definition 19.3. OSCICRS: Internal Oscillator Coarse Calibration
SFR Address = 0xA2; SFR Page = 0x0F;
SFR Definition 19.4. OSCIFIN: Internal Oscillator Fine Calibration
SFR Address = 0x9E; SFR Page = 0x0F;
178
Name
Reset
Reset
6:0
7:6
5:0
Bit
Bit
Type
Type
7
Bit
Bit
OSCIFIN[5:0] Internal Oscillator Fine Calibration Bits.
OSCICRS[6:0]
Unused
Name
Unused
Name
R
R
7
0
7
0
Read = 00b; Write = Don’t Care
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.
Varies
Read = 0; Write = Don’t Care
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.
R
6
6
0
Varies
Varies
5
5
Varies
Varies
Rev. 1.2
4
4
OSCICRS[6:0]
Function
Varies
Varies
Function
R/W
OSCIFIN[5:0]
3
3
R/W
Varies
Varies
2
2
Varies
Varies
1
1
Varies
Varies
0
0