S-35399A02 Datasheet, PDF (50/55 Pages) Seiko Instruments Inc – 2-WIRE REAL-TIME CLOCK

2-WIRE REAL-TIME CLOCK
S-35399A02
Rev.1.0_00
(7) Oscillation frequency vs. V_DD characteristics
Ta = 25°C, C_L = 6 pF, C_g = 5.1 pF (reference)
50
40
30
20
10
∆f/f
[ppm]
0
−10
−20
−30
−40
−50
0123456
VDD [V]
(8) Oscillation frequency vs. Temperature
characteristics
C_L = 6 pF, C_g = 5.1 pF (reference)
20
VDD = 5.0 V
0
−20
−40
∆f/f
[ppm]
−60
−80
VDD = 3.0 V
−100
−120
−140
−40 −25
0 25 50
Ta [°C]
75 85
(9) Oscillation start time vs. Temperature characteristics (10) Output current characteristics 1 (VOUT vs. IOL1)
(XOUT PIN MONITORED)
500
450
400
350
300
tSTA
[ms]
250
200
150
100
50
0
0
Ta = 25°C, C_L = 6 pF
VDD = 5.0 V
VDD = 3.0 V
2
4
6
8 10
Cg [pF]
INT1 pin, INT2 pin, F32K pin, Ta = 25°C
40
35
30
VDD = 5.0 V
25
IOL1
[mA] ²⁰
15
10
VDD = 3.0 V
5
0
0123456
VOUT [V]
(11) Output current characteristics 2 (V_OUT vs. I_OL2)
SDA pin, FOUT pin, Ta = 25°C
70
(12) Output current characteristics 3 (V_DD vs. I_OH)
FOUT pin, Ta = 25°C
0
60
50
IOL2 ⁴⁰
[mA] ₃₀
VDD = 5.0 V
−0.5
−1.0
IOH ^−1.5
[mA] _−2.0
VDD = 5.0 V
VDD = 3.0 V
20
VDD = 3.0 V
−2.5
10
−3.0
0
0123456
VOUT [V]
−3.5
0
0.1 0.2 0.3 0.4 0.5 0.6
VDD−VOUT [V]
50
Seiko Instruments Inc.