S-35399A03 Datasheet, PDF (46/51 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35399A03
Rev.1.0_00
„ Characteristics (Typical Data)
(1) Current consumption 1 (current consumption out of (2) Current consumption 2 (current consumption when
communication) vs. V_DD characteristics
32.768 kHz is output) vs. V_DD characteristics
Ta = 25°C, C_L = 6 pF, C_g = 5.1 pF
1.0
Ta = 25°C, C_L = 6 pF, C_g = 5.1 pF
1.0
0.8
0.8
0.6
IDD1
[µA]
0.4
0.6
IDD2
[µA]
0.4
0.2
0.2
0
0123456
VDD [V]
0
0123456
VDD [V]
(3) Current consumption 3 (current consumption during (4) Current consumption 1 (current consumption out of
communication) vs. Input clock characteristics
communication) vs. Temperature characteristics
Ta = 25°C, C_L = 6 pF, C_g = 5.1 pF
90
80
70
VDD = 5.0 V
60
IDD3 ⁵⁰
[µA] ₄₀
30
20
VDD = 3.0 V
10
0
0 100 200 300 400 500
SCL [kHz]
1.0
0.9
0.8
0.7
0.6
IDD1
[µA]
0.5
0.4
0.3
0.2
0.1
0
−40 −25
C_L = 6 pF, C_g = 5.1 pF
VDD = 5.0 V
VDD = 3.0 V
0 25 50
Ta [°C]
75 85
(5) Current consumption 1 (current consumption out of (6) Oscillation frequency vs. Cg characteristics
communication) vs. C_g characteristics
Ta = 25°C, C_L = 6 pF
Ta = 25°C, C_L = 6 pF, C_g = 5.1 pF (reference)
1.0
60
0.9
0.8
40
0.7
0.6
IDD1
[µA]
0.5
0.4
0.3
VDD = 5.0 V
VDD = 3.0 V
20
∆f/f
[ppm]
0
−20
VDD = 5.0 V
VDD = 3.0 V
0.2
−40
0.1
0
0
2
4
6
8 10
Cg [pF]
−60
0 2 4 6 8 10
Cg [pF]
46
Seiko Instruments Inc.