DS3232
Extremely Accurate I
2
C RTC with
Integrated Crystal and SRAM
2
_____________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
RECOMMENDED OPERATING CONDITIONS
(T
A
= -40°C to +85°C, unless otherwise noted.) (Notes 2, 3)
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.
Voltage Range on V
CC
, V
BAT
, 32kHz, SCL, SDA,
RST
,
INT
/SQW Relative to Ground.............................-0.3V to +6.0V
Junction-to-Ambient Thermal Resistance (
θ
JC
) (Note 1)..55.1°C/W
Junction-to-Case Thermal Resistance (
θ
JC
) (Note 1)..........24°C/W
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
Soldering Temperature (reflow, 2 times max) ....................+260°C
(See the
Handling, PC Board Layout, and Assembly section.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
2.3 3.3 5.5
Supply Voltage
V
BAT
2.3 3.0 5.5
V
Logic 1 Input SDA, SCL
V
IH
0.7 x
V
CC
V
CC
+
0.3
V
Logic 0 Input SDA, SCL
V
IL
-0.3
+0.3 x
V
CC
V
ELECTRICAL CHARACTERISTICS
(V
CC
= 2.3V to 5.5V, V
CC
= active supply (see Table 1), T
A
= -40°C to +85°C, unless otherwise noted.) (Typical values are at
V
CC
=
3.3V, V
BAT
= 3.0V
, and T
A
= +25°C, unless otherwise noted.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
= 3.3V
200
Active Supply Current
I
CCA
32kHz output off
(Notes 4, 5)
V
CC
= 5.5V
325
µA
V
CC
= 3.3V
120
Standby Supply Current
I
CCS
I
2
C bus inactive, 32kHz
output off, SQW output off
(Note 5)
V
CC
= 5.5V
160
µA
V
CC
= 3.3V
500
Temperature Conversion Current
I
CCSCONV
I
2
C bus inactive, 32kHz
output off, SQW output off
V
CC
= 5.5V
600
µA
Power-Fail Voltage
V
PF
2.45
2.575
2.70
V
ACTIVE SUPPLY (Table 1 ) (2.3V to 5.5V, T
A
= -40°C to +85°C, unless otherwise noted) (Note 2)
Logic 1 Output, 32kHz
I
OH
= -1mA
I
OH
= -0.75mA
I
OH
= -0.14mA
V
OH
Active supply > 3.3V,
3.3V > active supply > 2.7V,
2.7V > active supply > 2.3V
2.0
V
Note 1:
Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to
www.maxim-ic.com/thermal-tutorial
.
