m41t83 STMicroelectronics, m41t83 Datasheet - Page 47

• Manufacturer Part Number: m41t83
• Description: Serial I 2c Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

Figure 24. I
Table 21.
1. Externally supplied if using the QFN16 or SO8 package. STMicroelectronics recommends the Citizen CFS-
2. Load capacitors are integrated within the M41T8x. Circuit board layout considerations for the 32.768kHz
3. Guaranteed by design.
Table 22.
1. With default analog calibration value ( = 0).
2. Reference value.
3. T
C
Symbol
Symbol
XI,
145 (1.5x5mm) and the KDS DT-38 (3x8mm) for thru-hole, or the KDS DMX-26S (3.2x8mm) or Micro
Crystal MS3V-T1R (1.5x5mm) for surface-mount, tuning fork-type quartz crystals. For contact information,
see
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
V
A
t
R
C
f
STA
C
STA
O
= 25°C, V
S
L
Section 8: References on page
XO
(1)
Crystal electrical characteristics
Oscillator characteristics
Resonant frequency
Series resistance
Load capacitance
CC2
Oscillator start voltage
Oscillator start time
Capacitor input, capacitor output
IC-to-IC frequency variation
CC
10.000
9.000
8.000
7.000
6.000
5.000
4.000
3.000
2.000
= 5.0V.
vs. temperature
-40
Parameter
-20
Parameter
56.
0
(1)(2)
(2)(3)
(1)(2)
Temperature (˚C)
20
40
Conditions
V
CC
= V
4s
60
SO
Min
Min
–10
80
2.0
32.768
12.5
Typ
ai 13909
Typ
25
(3.0V)
(5.0V)
65
Max
Max
+10
(3)
1
Units
Units
kHz
ppm
k
pF
47/58
pF
V
s