DA14580
FINAL
Bluetooth Low Energy 4.2 SoC
Table 260: Timing Characteristics
Parameter
(BUCK)
Description
Conditions
Min
Typ
Max
Unit
t
startup time
Buck-mode; time from
deep-sleep to software
start.
1
ms
STA
(Note 9)
Typical application, run-
ning from retention RAM
on 16 MHz RC oscillator
Note 9: Worst-case value under Normal Operating Conditions.
Table 261: 16 MHz Crystal Oscillator: Recommended Operating Conditions
Parameter
(16M)
Description
Conditions
Min
Typ
Max
Unit
f
crystal oscillator fre-
quency
16
MHz
XTAL
ESR(16M)
C (16M)
equivalent series resis-
tance
100
12
load capacitance
No external capacitors
are required
10
pF
L
C (16M)
shunt capacitance
5
pF
0
f
f
(16M)
crystal frequency toler-
ance
After optional trimming;
including aging and tem-
perature drift
-20
20
ppm
XTAL
(Note 10)
crystal frequency toler-
ance
Untrimmed; including
aging and temperature
drift
-40
40
ppm
X-
(16M)UNT
TAL
(Note 11)
P
)
(16M maximum drive power
(16M) external clock voltage
(Note 12)
100
1
W
DRV(MAX)
V
Only in case of an exter-
nal reference clock on
XTAL16Mp (XTAL16Mm
floating or connected to
mid-level 0.6 V)
1.2
V
CLK(EXT)
(EXTER-
NAL)16M
phase noise
f = 50 kHz
in case of an external
reference clock
-130
dBc/
Hz
N
C
Note 10: Using the internal varicaps a wide range of crystals can be trimmed to the required tolerance.
Note 11: Maximum allowed frequency tolerance for compensation by the internal varicap trimming mechanism.
Note 12: Select a crystal which can handle a drive-level equal or more than this specification
Table 262: 16 MHz Crystal Oscillator: Timing Characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
t
(16M) crystal oscillator startup
time
0.5
2
3
ms
STA(XTAL)
Datasheet
Revision 3.4
09-Nov-2016
CFR0011-120-01
144 of 155
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