S-35190A Datasheet, PDF (41/53 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

Rev.2.4_00
3-WIRE REAL-TIME CLOCK
S-35190A
(7) Oscillation frequency vs. V_DD characteristics
Ta = 25°C, Cg = 7.5 pF
50
40
30
20
10
∆f/f
[ppm] ⁰
−10
−20
−30
−40
−50
01234 56
V_DD [V]
(8) Oscillation frequency vs. Temperature
characteristics
C_g = 7.5 pF
20
0
V_DD = 5.0 V
−20
−40
∆f/f
[ppm]
−60
−80
V_DD = 3.0 V
−100
−120
−140
−40 −25
0 25 50
Ta [°C]
75 85
(9) Oscillation start time vs. C_g characteristics
Ta = 25°C
500
450
400
350
300
t_STA
[ms]
250
200
V_DD = 5.0 V
150
V_DD = 3.0 V
100
50
0
0 2 4 6 8 10
C_g [pF]
(10) Output current characteristics 1 (V_OUT vs. I_OL1)
INT ^{pin, Ta = 25°C}
50
40
30
I_OL1
[mA]
20
10
V_DD = 5.0 V
V_DD = 3.0 V
0
0
1
2
3
4
V_OUT [V]
(11) Output current characteristics 2 (V_OUT vs. I_OL2)
SIO pin, Ta = 25°C
50
40
30
I_OL2
[mA]
20
V_DD = 5.0 V
V_DD = 3.0 V
10
0
0 0.5 1 1.5 2 2.5
V_OUT [V]
(12) CS pin input current characteristics
CS pin, Ta = 25°C
800
700
V_DD = 5.0 V
600
500
I_IH
[µA]
400
300
200
V_DD = 3.0 V
100
0
01234 56
V_IN [V]
Seiko Instruments Inc.
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