Datasheet
DS3232M
±5ppm, I
2
C Real-Time Clock with SRAM
2Maxim Integrated
Voltage Range on Any Pin Relative to GND ........-0.3V to +6.0V
Operating Temperature Range
.......................... -40NC to +85NC
Storage Temperature Range
............................ -55NC to +125NC
Junction Temperature
.....................................................+150NC
Lead Temperature (soldering, 10s)
................................+300NC
Soldering Temperature (reflow)
......................................+260NC
ABSOLUTE MAXIMUM RATINGS
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-
tion 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 OPERATING CONDITIONS
(T
A
= -40NC to +85NC, unless otherwise noted.) (Note 2)
ELECTRICAL CHARACTERISTICS—FREQUENCY AND TIMEKEEPING
(V
CC
or V
BAT
= +3.3V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
CC
= +3.3V, V
BAT
= +3.0V, and
T
A
= +25NC, unless otherwise noted.) (Note 2)
DC ELECTRICAL CHARACTERISTICS—GENERAL
(V
CC
= +2.3V to +4.5V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at V
CC
= +3.3V, V
BAT
= +3.0V, and
T
A
= +25NC, unless otherwise noted.) (Note 2)
SO
Junction-to-Ambient Thermal Resistance (q
JA
) ........120°C/W
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.maximintegrated.com/thermal-tutorial.
PACKAGE THERMAL CHARACTERISTICS (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
1Hz Frequency Tolerance
Df/f
OUT
Measured over R 10s interval Q5
ppm
1Hz Frequency Stability vs. V
CC
Voltage
Df/V Q1
ppm/V
Timekeeping Accuracy tK
A
Q0.432
Seconds/
Day
32kHz Frequency Tolerance
Df/f
OUT
Q2.5
%
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage
V
CC
2.3 3.3 4.5
V
V
BAT
2.3 3.0 4.5
Logic 1 V
IH
0.7 x
V
CC
V
CC
+
0.3
V
Logic 0 V
IL
-0.3
0.3 x
V
CC
V
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Active Supply Current
(I
2
C Active)
I
CCA (Note 3) 125 250 µA
Standby Supply Current
(I
2
C Inactive)
I
CCS (Notes 3, 4) 100 175 µA