msm62x42b Oki Semiconductor, msm62x42b Datasheet - Page 26

• Manufacturer Part Number: msm62x42b
• Description: Real Time Clock Ic With Built-in Crystal
• Manufacturer: Oki Semiconductor

MSM62X42B
REFERENCE DATA
(1) Frequency vs. Temperature
(2) Current Consumption vs. Supply Voltage
(3) Frequency vs. Supply Voltage
66
–10
–20
–30
–40
–50
–60
–70
0
–20 –10 0
Typical
q
a = –0.035ppm/°C
–10
[PPM]
10 20 30 40 50 60 70
–2
–4
–6
T
30
25
20
15
10
–8
4
2
0
5
[µA]
D fx
I
Temp. (°C)
= 25°C
DD
CS1 = 0V
at 25°C
at 25°C
2.0
2.0
2
3.0
3.0
4.0
4.0
Frequency temperature characteristics can be
estimated as follows:
Dfx (PPM) = f0T + a(qT – qx)
11.574 ppm equals to the error of a second/
day.
Dfx (PPM) : frequency shift at arbitrary
f0T (PPM) : frequency shift at qT
a(PPM)
qT ( C)
qx ( C)
5.0 [V]
5.0
[V]
Voltage
:
: temperature coefficient
:
:
: turning point temperature
:
: arbitrary temperature
temperature
(–0.035 ppm/ C
(ppm/ C
(25 C
Voltage
¡ Semiconductor
5 C)
2
)
2
2
0.005