C8051F986-GUR Silicon Labs, C8051F986-GUR Datasheet - Page 210

• Manufacturer Part Number: C8051F986-GUR
• Description: 8-bit Microcontrollers - MCU 8kB 512B RAM 12b ADC
• Manufacturer: Silicon Labs

Specifications of C8051F986-GUR

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

C8051F99x-C8051F98x
Internal Register Definition 20.5. RTC0XCN: SmaRTClock Oscillator Control
SmaRTClock Address = 0x05
210
Name
Reset
Type
Bit
2:0
7
6
5
4
3
Bit
CLKVLD
XMODE
AGCEN
BIASX2
Unused
LFOEN
Name
AGCEN
R/W
7
0
SmaRTClock Oscillator Automatic Gain Control (AGC) Enable.
0: AGC disabled.
1: AGC enabled.
SmaRTClock Oscillator Mode.
Selects Crystal or Self Oscillate Mode.
0: Self-Oscillate Mode selected.
1: Crystal Mode selected.
SmaRTClock Oscillator Bias Double Enable.
Enables/disables the Bias Double feature.
0: Bias Double disabled.
1: Bias Double enabled.
SmaRTClock Oscillator Crystal Valid Indicator.
Indicates if oscillation amplitude is sufficient for maintaining oscillation.
0: Oscillation has not started or oscillation amplitude is too low to maintain oscillation.
1: Sufficient oscillation amplitude detected.
Low Frequency Oscillator Enable and Select.
Overrides XMODE and selects the internal low frequency oscillator (LFO) as the
SmaRTClock oscillator source.
0: XMODE determines SmaRTClock oscillator source.
1: LFO enabled and selected as SmaRTClock oscillator source.
Read = 000b; Write = Don’t Care.
XMODE
R/W
6
0
BIASX2
R/W
5
0
CLKVLD
Rev. 1.1
R
4
0
Function
LFOEN
R
3
0
R
2
0
R
1
0
R
0
0