S-35390A Datasheet, PDF (42/54 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35390A
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 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]
(3) Current consumption during operation vs. Input
clock characteristics
Ta = 25°C, C_L = 6 pF
50
45
40
35
30
I_DD2
[µA]
25
20
15
V_DD = 5.0 V
V_DD = 3.0 V
10
5
0
0 100 200 300 400 500
SCLfrequency [kHz]
0
01234 5 6
V_DD [V]
(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
(6) Oscillation frequency vs. C_g characteristics
Ta = 25°C, C_L = 6 pF
1.0
100
0.9
80
0.8
60
0.7
0.6
I_DD1
[µA]
0.5
0.4
0.3
V_DD = 5.0 V
40
20
∆f/f
[ppm] ⁰
–20
–40
V_DD = 5.0 V
V_DD = 3.0 V
0.2
V_DD = 3.0 V
–60
0.1
–80
0
0 2 4 6 8 10
C_g [pF]
–100
0 2 4 6 8 10
C_g [pF]
42
Seiko Instruments Inc.