3.10.4.4.4 FRCCAL – Fast
RC Oscillator Calibration Register
Name:
FRCCAL
Offset:
0x0C7
Reset:
0x00
Bit
7
6
5
4
3
2
1
0
[1:0]
FRCTC
FRCCAL[4:0]
Access
R
R
R/W
R/W
R/W
R/W
R/W
R/W
Reset
0
0
0
0
0
0
0
0
Bits 7:6 – [1:0] Reserved
Bit
These bits are reserved and
read as ‘0’.
Bit 5 – FRCTC Fast RC Oscillator
Temperature Compensation
This bit shows the temperature
compensation state, which was stored during manufacturing. This value is not meant
to be changed by the user.
Bits 4:0 – FRCCAL[4:0] Fast RC Oscillator Calibration
Factory calibration data is
written into this register during start-up. The lowest frequency of the FRC
oscillator is available when the calibration registers are in the reset state
(‘0’). FRC parameters can be found in the Oscillators and CLK_OUT. The FRCCAL
register must only be modified by the firmware. The tuning range during operation is
limited to ±8 steps from the factory calibration value. All other values are not
tested.
The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.
