DS1340 Maxim, DS1340 Datasheet - Page 2

• Manufacturer Part Number: DS1340
• Description: The DS1340 is a real-time clock (RTC)/calendar that is pin compatible and functionally equivalent to the ST M41T00, including the software clock calibration
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
Voltage Range on SDA, SCL, and FT/OUT
Operating Temperature Range ...........................-40°C to +85°C
I
RECOMMENDED DC OPERATING CONDITIONS
(V
otherwise noted.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
2
Supply Voltage (Note 2)
Input Logic 1 (SDA, SCL)
Input Logic 0 (SDA, SCL)
Supply Voltage, Pullup
(FT/OUT, SDA, SCL), V
Backup Supply Voltage (Note 2)
Trickle-Charge Current-Limiting
Resistors
Power-Fail Voltage (Note 2)
Input Leakage (SCL, CLK)
I/O Leakage (SDA, FT/OUT)
SDA Logic 0 Output
FT/OUT Logic 0 Output
Active Supply Current (Note 7)
Standby Current (Note 8)
V
2
CC
BACKUP
Relative to Ground..................................-0.3V to (V
_______________________________________________________________________________________
C RTC with Trickle Charger
= V
CC MIN
Leakage Current
PARAMETER
to V
CC
CC MAX
Pin Relative to Ground .....-0.3V to +6.0V
CC
= 0V
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at V
I
BACKUPLKG
SYMBOL
V
I
I
BACKUP
OLSQW
OLSDA
I
I
V
V
V
V
CCA
I
CCS
V
R1
R2
R3
I
LO
CC
PU
PF
LI
IH
IL
DS1340-18
DS1340-3
DS1340-33
(Note 2)
(Note 2)
(Note 2)
DS1340-18
DS1340-3
DS1340-33
(Notes 3, 4)
(Note 5)
(Note 6)
DS1340-18
DS1340-3
DS1340-33
V
1.7V < V
V
1.7V < V
1.3V < V
DS1340-18; V
DS1340-3; V
DS1340-33; V
DS1340-18; V
DS1340-3; V
DS1340-33; V
V
CC
CC
BACKUP
CC
> 2V; V
> 2V; V
+ 0.3V)
CC
CC
CC
= 3.7V
OL
< 2V; V
OL
< 2V; V
< 1.7V; V
CC
CC
CC
CC
CC
CC
CONDITIONS
= 0.4V
= 0.4V
= 3.3V
= 3.3V
= 1.89V
= 5.5V
= 1.89V
= 5.5V
Storage Temperature Range .............................-55°C to +125°C
Lead Temperature (soldering, 10s) .................................+260°C
Soldering Temperature (reflow) .......................................+260°C
OL
OL
OL
= 0.2 x V
= 0.2 x V
= 0.2x V
CC
CC
CC
0.7 x V
1.71
2.97
1.51
2.45
2.70
MIN
-0.3
2.7
1.3
1.3
1.3
-1
-1
CC
CC
= 3.3V, T
2000
4000
TYP
2.88
250
108
192
100
1.8
3.0
3.3
1.6
2.6
72
60
81
+0.3 x V
V
CC
A
MAX
1.71
2.97
250
150
200
300
100
125
150
100
= +25°C, unless
5.5
5.5
5.5
+ 0.3
5.5
3.7
3.7
5.5
2.7
3.0
3.0
3.0
3.0
+1
+1
CC
UNITS
mA
mA
μA
μA
μA
μA
μA
nA
V
V
V
V
V
V