m41t93 STMicroelectronics, m41t93 Datasheet - Page 39

• Manufacturer Part Number: m41t93
• Description: Serial Spi Bus Rtc With Battery Switchover
• Manufacturer: STMicroelectronics

Figure 17. I
Table 19.
1. Externally supplied if using the QFN16 package. STMicroelectronics recommends the Citizen CFS-145
2. Load capacitors are integrated within the M41T93. Circuit board layout considerations for the 32.768kHz
3. Guaranteed by design.
Table 20.
1. With default Analog Calibration value ( = 0).
2. Reference value
3. T
Symbol
C
Symbol
XI,
(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
Section 8: References on page
crystal of minimum trace lengths and isolation from RF generating signals should be taken into account.
R
C
V
f
A
t
O
STA
S
L
C
STA
= 25°C, V
XO
(1)
Resonant frequency
Series resistance
Load capacitance
Crystal electrical characteristics
Oscillator characteristics
Oscillator start voltage
Oscillator start time
Capacitor Input, capacitor output
IC-to-IC frequency variation
CC2
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
Parameter
-20
49.
(1)(2)
(1)(2)
0
(2)(3)
Temperature (˚C)
20
Conditions
V
CC
40
4s
= V
Min
SO
60
Min
–10
2.0
32.768
12.5
Typ
80
Typ
25
65
(3.0V)
(5.0V)
Max
ai 13909
(3)
Max
+10
1
Units
kHz
k
pF
Units
ppm
pF
39/51
V
s