Datasheet

DC and AC parameters M41T93
46/56 DocID12615 Rev 8
Figure 21. I
CC2
vs. temperature
Table 19. Crystal electrical characteristics
Symbol Parameter
(1)(2)
1. Externally supplied if using the QFN16 package. STMicroelectronics recommends the Citizen CFS-145
(1.5 x 5 mm) and the KDS DT-38 (3 x 8 mm) for thru-hole, or the KDS DMX-26S (3.2 x 8 mm) or Micro
Crystal MS3V-T1R (1.5 x 5 mm) for surface-mount, tuning fork-type quartz crystals.
2. Load capacitors are integrated within the M41T93. Circuit board layout considerations for the 32.768 kHz
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
Min Typ Max Units
f
O
Resonant frequency - 32.768 kHz
R
S
Series resistance - 65
(3)
3. Guaranteed by design.
k
C
L
Load capacitance - 12.5 pF
Table 20. Oscillator characteristics
Symbol Parameter
(1)(2)
1. With default analog calibration value ( = 0)
2. Reference value
Conditions Min Typ Max Units
V
STA
Oscillator start voltage 4 s 2.0 V
t
STA
Oscillator start time V
CC
= V
SO
1s
C
XI,
C
XO
(1)
Capacitor input, capacitor output 25 pF
IC-to-IC frequency variation
(2)(3)
3. T
A
= 25 °C, V
CC
= 5.0 V
–10 +10 ppm
ai 13909
2.000
3.000
4.000
5.000
6.000
7.000
8.000
9.000
10.000
-40 -20 0 20 40 60 80
Temperature (°C)
Icc2 (µA)
(3.0V)
(5.0V)