S-35190A Datasheet, PDF (40/53 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

3-WIRE REAL-TIME CLOCK
S-35190A
Rev.2.4_00
„ Characteristics (Typical Data)
(1) Standby current vs. V_DD characteristics
Ta = 25°C, C_L = 6 pF
1.0
(2) Current consumption when 32.768 kHz is output
vs. V_DD characteristics
Ta = 25°C, C_L = 6 pF
1.0
0.8
0.8
0.6
I_DD1
[µA]
0.4
0.6
I_DD3
[µA]
0.4
0.2
0.2
0
0 1234 5 6
V_DD [V]
0
01234 56
V_DD [V]
(3) Current consumption during operation vs. Input
clock characteristics
Ta = 25°C, C_L = 6 pF
30
25
20
I_DD2
[µA]
15
10
V_DD = 5.0 V
V_DD = 3.0 V
5
0
0 200 400 600 800 1000
SCK frequency [kHz]
(4) Standby current vs. Temperature characteristics
1.0
0.9
0.8
0.7
0.6
I_DD1
[µA]
0.5
0.4
0.3
0.2
0.1
0
−40 −25
C_L = 6 pF
V_DD = 5.0 V
V_DD = 3.0 V
0 25 50 75 85
Ta [°C]
(5) Standby current vs. C_g characteristics
Ta = 25°C, C_L = 6 pF
1.0
0.9
0.8
0.7
0.6
I_DD1
[µA]
0.5
0.4
0.3
V_DD = 5.0 V
0.2
V_DD = 3.0 V
0.1
0
0 2 4 6 8 10
C_g [pF]
(6) Oscillation frequency vs. C_g characteristics
Ta = 25°C, C_L = 6 pF
100
80
60
40
20
∆f/f
[ppm]
0
−20
V_DD = 5.0 V
V_DD = 3.0 V
−40
−60
−80
−100
0 2 4 6 8 10
C_g [pF]
40
Seiko Instruments Inc.