C2510Fx / CC2511Fx
7.6 Low Power RC Oscillator
TA = 25 °C, VDD = 3.0 V if nothing else is stated.
Parameter
Min
Typ
Max
Unit
Condition/Note
Calibrated frequency2
32.0
34.7
36.0
kHz
Calibrated low power RC oscillator frequency is
fXOSC / 750
Frequency accuracy after
calibration
±1
%
Temperature coefficient
Supply voltage coefficient
Initial calibration time
+0.5
+3
2
Frequency drift when temperature changes after
calibration
%/°C
%/V
ms
Frequency drift when supply voltage changes after
calibration
When the low power RC oscillator is enabled,
calibration is continuously done in the background
as long as the high speed crystal oscillator is
running.
Table 14: Low Power RC Oscillator Parameters
7.7 High Speed RC Oscillator
TA = 25 °C, VDD = 3.0 V if nothing else is stated.
Parameter
Min
Typ
13
Max
Unit
MHz
%
Condition/Note
Calibrated frequency2
12
13.5
Calibrated HS RCOSC frequency is fXOSC / 2
Uncalibrated frequency
accuracy
±15
Calibrated frequency
accuracy
%
±1
Start-up time
10
µs
Temperature coefficient
-325
Frequency drift when temperature changes after
calibration
ppm/°C
Supply voltage coefficient
Initial calibration time
28
ppm/V
µs
Frequency drift when supply voltage changes after
calibration
65
The HS RCOSC will be calibrated once when the
high speed crystal oscillator is selected as system
clock source (CLKCON.OSCis set to 0), and also
when the system wakes up from PM{1-3}. See
13.1.5.1 for details).
Table 15: High Speed RC Oscillator Parameters
2
Min figures are given using fXOSC = 24 MHz. Typ figures are given using fXOSC = 26 MHz, and Max
figures are given using fXOSC = 27 MHz
SWRS055D
Page 18 of 243
TAOS [ TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS ]
