The DS3232 is a low-cost temperature-compensated
crystal oscillator (TCXO) with a very accurate, temperature-compensated, integrated real-time clock (RTC) and
236 bytes of battery-backed SRAM. Additionally, the
DS3232 incorporates a battery input and maintains accurate
timekeeping when main power to the device is interrupted.
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 active-low 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 I²C bidirectional bus.
A precision temperature-compensated voltage reference
and comparator circuit monitors the status of VCC
to detect power failures, to provide a reset output, and
to automatically switch to the backup supply when necessary.
Additionally, the active-low RST pin is monitored as a
pushbutton input for generating a reset externally.
Key Features
Applications/Uses
Accuracy ±2ppm from 0°C to +40°C
Accuracy ±3.5ppm from -40°C to +85°C
Battery Backup Input for Continuous Timekeeping
Operating Temperature Ranges
Commercial: 0°C to +70°C
Industrial: -40°C to +85°C
236 Bytes of Battery-Backed SRAM
Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2099
Two Time-of-Day Alarms
Programmable Square-Wave Output
Fast (400kHz) I²C Interface
3.3V Operation
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
Active-Low RST Input/Output
300-Mil, 20-Pin SO Package
Underwriters Laboratories (UL®) Recognized
GPS
Servers
Telematics
Utility Power Meters
Key Specifications:
Oscillator Modules
Part Number
Frequency
Oscillator Type
Tuning Adjustment Type
Frequency Output Type
Freq. Stability vs. Temp. @0 to +40°C (±ppm)
Freq. Stab. vs.Temp. @-40 to 0/ +40 to 85°C (±ppm)
Notes: *This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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