Extremely Accurate I
2
C-Integrated
RTC/TCXO/Crystal
DS3231
ABSOLUTE MAXIMUM RATINGS
Voltage Range on V
CC
, V
BAT
, 32kHz, SCL, SDA,
RST,
INT/SQW
Relative to Ground.............................-0.3V to +6.0V
Operating Temperature Range
(noncondensing) .............................................-40°C to +85°C
Junction Temperature ......................................................+125°C
Storage Temperature Range ...............................-40°C to +85°C
Lead Temperature
(Soldering, 10s).....................................................+260°C/10s
Soldering Temperature....................................See the
Handling,
PC Board Layout, and Assembly
section.
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.
RECOMMENDED DC OPERATING CONDITIONS
(T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Notes 1, 2)
PARAMETER
Supply Voltage
Logic 1 Input SDA, SCL
Logic 0 Input SDA, SCL
Pullup Voltage
(SDA, SCL, 32kHz,
INT/SQW)
SYMBOL
V
CC
V
BAT
V
IH
V
IL
V
PU
V
CC
= 0V
CONDITIONS
MIN
2.3
2.3
0.7 x
V
CC
-0.3
TYP
3.3
3.0
MAX
5.5
5.5
V
CC
+
0.3
+0.3 x
V
CC
5.5V
UNITS
V
V
V
V
V
ELECTRICAL CHARACTERISTICS
(V
CC
= 2.3V to 5.5V, V
CC
> V
BAT
, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Typical values are at V
CC
= 3.3V, V
BAT
= 3.0V, and
T
A
= +25°C, unless otherwise noted.) (Notes 1, 2)
PARAMETER
Active Supply Current
SYMBOL
I
CCA
(Notes 3, 4)
I
2
C bus inactive, 32kHz
output on, SQW output off
(Note 4)
I
2
C bus inactive, 32kHz
output on, SQW output off
CONDITIONS
V
CC
= 3.63V
V
CC
= 5.5V
V
CC
= 3.63V
V
CC
= 5.5V
V
CC
= 3.63V
V
CC
= 5.5V
2.45
I
OL
= 3mA
I
OL
= 1mA
Output high impedance
-1
-1
RST
high impedance (Note 5)
-200
25
0
2.575
MIN
TYP
MAX
200
300
110
µA
170
575
650
2.70
0.4
0.4
+1
+1
+10
100
µA
V
V
V
µA
µA
µA
nA
UNITS
µA
Standby Supply Current
I
CCS
Temperature Conversion Current
Power-Fail Voltage
Logic 0 Output, 32kHz,
INT/SQW,
SDA
Logic 0 Output,
RST
Output Leakage Current 32kHz,
INT/SQW,
SDA
Input Leakage SCL
RST
Pin I/O Leakage
V
BAT
Leakage Current
(V
CC
Active)
I
CCSCONV
V
PF
V
OL
V
OL
I
LO
I
LI
I
OL
I
BATLKG
2
_____________________________________________________________________
DALLAS [ DALLAS SEMICONDUCTOR ]
