User's Manual

Table Of Contents
4.1.8 Oscillators
4.1.8.1 LFXO
Table 4.12. LFXO
Parameter Symbol Test Condition Min Typ Max Unit
Crystal frequency f
LFXO
32.768 kHz
Current consumption after
startup
I
LFXO
GAIN
1
, AGC
1
273 nA
Start- up time t
LFXO
GAIN
1
308 ms
Note:
1. In CMU_LFXOCTRL register
4.1.8.2 HFXO
Table 4.13. HFXO
Parameter Symbol Test Condition Min Typ Max Unit
Crystal Frequency f
HFXO
38.4 MHz
Startup time t
HFXO
38.4 MHz: BOOST
1
= 2
300 μs
Frequency Tolerance for the
crystal
FT
HFXO
38.4 MHz -25 25 ppm
Note:
1. In CMU_HFXOCTRL register
4.1.8.3 LFRCO
Table 4.14. LFRCO
Parameter Symbol Test Condition Min Typ Max Unit
Oscillation frequency f
LFRCO
ENVREF = 1 in
CMU_LFRCOCTRL
TBD 32.768 TBD kHz
ENVREF = 0 in
CMU_LFRCOCTRL
TBD 32.768 TBD kHz
Startup time t
LFRCO
500 μs
Current consumption
1
I
LFRCO
ENVREF = 1 in
CMU_LFRCOCTRL
342 nA
ENVREF = 0 in
CMU_LFRCOCTRL
494 nA
Note:
1.
Block is supplied by AVDD if ANASW = 0, or DVDD if ANASW=1 in EMU_PWRCTRL register
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Smart Module Data Sheet
Electrical Specifications
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