DS3232S Maxim Integrated Products, DS3232S Datasheet
DS3232S
Manufacturer Part Number
DS3232S
Description
SOP-20
Manufacturer
Maxim Integrated Products
Specifications of DS3232S
Date_code
07+
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The DS3232 is a low-cost temperature-compensated
crystal oscillator (TCXO) with a very accurate, tempera-
ture-compensated, integrated real-time clock (RTC) and
236 bytes of battery-backed SRAM. Additionally, the
DS3232 incorporates a battery input and maintains accu-
rate timekeeping when main power to the device is inter-
rupted. The integration of the crystal resonator enhances
the long-term accuracy of the device as well as reduces
the piece-part count in a manufacturing line. The DS3232
is available in commercial and industrial temperature
ranges, and is offered in an industry-standard 20-pin,
300-mil SO package.
The RTC maintains seconds, minutes, hours, day, date,
month, and year information. The date at the end of the
month is automatically adjusted for months with fewer
than 31 days, including corrections for leap year. The
clock operates in either the 24-hour or 12-hour format
with an AM/PM indicator. Two programmable time-of-
day alarms and a programmable square-wave output
are provided. Address and data are transferred serially
through an I
A precision temperature-compensated voltage refer-
ence and comparator circuit monitors the status of V
to detect power failures, to provide a reset output, and
to automatically switch to the backup supply when nec-
essary. Additionally, the RST pin is monitored as a
pushbutton input for generating a reset externally.
Rev 3; 10/07
UL is a registered trademark of Underwriters Laboratories, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
CPU
V
CC
Servers
Telematics
BUTTON
R
PU
PUSH-
RESET
R
= t
PU
2
R
C bidirectional bus.
/ C
Typical Operating Circuit
B
R
PU
V
CC
General Description
SCL
SDA
RST
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
Utility Power Meters
GPS
DS3232
GND
V
V
CC
CC
Extremely Accurate I
Applications
INT/SQW
______________________________________________ Maxim Integrated Products
32kHz
V
N.C.
N.C.
N.C.
N.C.
N.C.
BAT
Integrated Crystal and SRAM
CC
♦ Accuracy ±2ppm from 0°C to +40°C
♦ Accuracy ±3.5ppm from -40°C to +85°C
♦ Battery Backup Input for Continuous
♦ Operating Temperature Ranges
♦ 236 Bytes of Battery-Backed SRAM
♦ Low-Power Consumption
♦ Real-Time Clock Counts Seconds, Minutes,
♦ Two Time-of-Day Alarms
♦ Programmable Square-Wave Output
♦ Fast (400kHz) I
♦ 3.3V Operation
♦ Digital Temp Sensor Output: ±3°C Accuracy
♦ Register for Aging Trim
♦ RST Input/Output
♦ 300-Mil, 20-Pin SO Package
♦ Underwriters Laboratories (UL
# Denotes a RoHS-compliant device that may include lead that
is exempt under the RoHS requirements. Lead finish is JESD97
Category e3, and is compatible with both lead-based and
lead-free soldering processes. A "#" anywhere on the top mark
denotes a RoHS-compliant device.
DS3232S#
DS3232SN#
Timekeeping
Hours, Day, Date, Month, and Year with Leap Year
Compensation Valid Up to 2099
TOP VIEW
PART
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
INT/SQW
32kHz
N.C.
N.C.
N.C.
N.C.
N.C.
N.C.
V
RST
-40°C to +85°C
TEMP RANGE
CC
0°C to +70°C
2
10
C Interface
1
2
3
4
5
6
7
8
9
Ordering Information
DS3232
2
SO
Pin Configuration
C RTC with
PIN-
PACKAGE
20 SO
20 SO
20
19
18
17
16
15
14
13
12
11
®
) Recognized
SCL
SCL
SDA
V
GND
N.C.
N.C.
N.C.
N.C.
N.C.
BAT
Features
DS3232
DS3232N
MARK
TOP
1
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