S-35192A Datasheet, PDF (36/41 Pages) Seiko Instruments Inc – 3-WIRE REAL-TIME CLOCK

3-WIRE REAL-TIME CLOCK
S-35192A
Rev.1.2_00
(7) 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
(8) Oscillation start time vs. C_g characteristics
500
450
400
350
300
t_STA
[ms]
250
200
150
100
50
0
0
Ta = 25°C
V_DD = 5.0 V
V_DD = 3.0 V
2
4
6
8 10
C_g [pF]
(9) Output current characteristics 1 (V_OUT vs. I_OL1)
32KO pin, Ta = 25°C
50
(10) Output current characteristics 2 (V_OUT vs. I_OL2)
SIO pin, Ta = 25°C
50
40
30
I_OL1
[mA]
20
10
V_DD = 5.0 V
V_DD = 3.0 V
40
30
I_OL2
[mA]
20
V_DD = 5.0 V
V_DD = 3.0 V
10
0
0
1
2
3
4
V_OUT [V]
0
0
0.5 1 1.5 2 2.5
V_OUT [V]
(11) 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
0 1234 56
V_IN [V]
(12) BLD detection, release voltage, V_DDT (Min) vs.
temperature characteristics
C_L = 6 pF
1.4
1.2
Release voltage
1.0
BLD ^0.8
[V] _0.6
0.4
Detection voltage
V_DDT (Min)
0.2
0
−40 −25
0 25 50
Ta [°C]
75 85
36
Seiko Instruments Inc.