CC2510Fx / CC2511Fx
6.5
32.768 kHz Crystal Oscillator
TA = 25°C, VDD = 3.0V if nothing else is stated.
Parameter
Crystal frequency
C0
Min
Typ
32.768
0.9
Max
Unit
kHz
pF
Condition/Note
2.0
16
Simulated over operating conditions
Simulated over operating conditions
Simulated over operating conditions
Value is simulated
Load capacitance
ESR
12
pF
40
130
kΩ
Start-up time
400
ms
Table 13: 32.768 kHz Crystal Oscillator Parameters
6.6 Low Power RC Oscillator
TA = 25°C, VDD = 3.0 V if nothing else is stated.
Parameter
Min
32.0
32.0
Typ
34.7
32.0
Max
36.0
32.0
Unit
Condition/Note
CC2510Fx
Calibrated frequency2
kHz
CC2511Fx
Calibrated low power RC oscillator frequency is
fRef / 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
2 fRef = fXOSC for CC2510Fx and fRef = fXOSC /2 for CC2511Fx
For CC2510Fx 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. For CC2511Fx, fXOSC = 48 MHz
SWRS055F
Page 17 of 241
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