
REAL-TIME CLOCK
Rev. 1.4_00
S-3511A
Seiko Instruments Inc.
7
DC Electrical Characteristics
Table 5 DC characteristics (3 V)
(Unless otherwise specified : Ta
=25°C, VDD=3 V, DS-VT-200 (crystal oscillator, CL=6 pF, 32,768 Hz) manufactured by SII Quartz Techno Ltd.)
Item
Symbol Applicable pin
Condition
Min.
Typ.
Max.
Unit
Operating voltage range
VDD
Ta
= 20 to +70°C
1.7
3.0
5.5
V
Current consumption 1
IDD1
During no communications
0.7
1.5
A
Current consumption 2
IDD2
During communications
(SCK
=100 kHz)
5.5
10
A
Input leak current 1
IIZH
SCK, SIO
VIN
= VDD
0.5
0.5
A
Input leak current 2
IIZL
SCK, SIO
VIN
= VSS
0.5
0.5
A
Input current 1
IIL1
CS
VIN
= 5.5 V
2
6
20
A
Input current 2
IIL2
CS
VIN
= 0.4 V
40
110
300
A
Output leak current1
IOZH
INT, SIO
VOUT
=VDD
0.5
0.5
A
Output leak current2
IOZL
INT, SIO
VOUT
=VSS
0.5
0.5
A
Input voltage 1
VIH
SIO, SCK, CS
0.8
×VDD
V
Input voltage 2
VIL
SIO, SCK, CS
0.2
×VDD
V
Output current 1
IOL1
INT
VOUT
=0.4 V
1.5
2.5
mA
Output current 2
IOL2
SIO
VOUT
=0.4 V
5
10
mA
Power voltage detection
voltage 1
VDET1
Ta
=+25°C
1.8
2.0
2.2
V
Power voltage detection
voltage 2
VDET2
Ta
= 20 to +70°C
1.72
2.3
V
Table 6 DC characteristics (5 V)
(Unless otherwise specified : Ta
=25°C, VDD=5 V, DS-VT-200 (crystal oscillator, CL=6 pF, 32,768 Hz) manufactured by SII Quartz Techno Ltd.)
Item
Symbol
Applicable pin
Condition
Min.
Typ.
Max.
Unit
Operating voltage range
VDD
Ta
= 20 to +70°C
1.7
3.0
5.5
V
Current consumption 1
IDD1
During no communications
1.6
3.0
A
Current consumption 2
IDD2
During communications
(SCK
=100 kHz)
12
20
A
Input leak current 1
IIZH
SCK, SIO
VIN
= VDD
0.5
0.5
A
Input leak current 2
IIZL
SCK, SIO
VIN
= VSS
0.5
0.5
A
Input current 1
IIL1
CS
VIN
= 5.5 V
10
25
50
A
Input current 2
IIL2
CS
VIN
= 0.4 V
100
175
400
A
Output leak current1
IOZH
INT, SIO
VOUT
=VDD
0.5
0.5
A
Output leak current2
IOZL
INT, SIO
VOUT
=VSS
0.5
0.5
A
Input voltage 1
VIH
SIO, SCK, CS
0.8
×VDD
V
Input voltage 2
VIL
SIO, SCK, CS
0.2
×VDD
V
Output current 1
IOL1
INT
VOUT
=0.4 V
2.0
3.5
mA
Output current 2
IOL2
SIO
VOUT
=0.4 V
6
12
mA
Power voltage detection
voltage 1
VDET1
Ta
=+25°C
1.8
2.0
2.2
V
Power voltage detection
voltage 2
VDET2
Ta
= 20 to +70°C
1.72
2.3
V