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DS1375 Datasheet

  • DS1375

  • 2-Wire Digital Input RTC with Alarm

  • 11頁

  • DALLAS   DALLAS

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Rev 1; 1/04
2-Wire Digital Input RTC with Alarm
General Description
The DS1375 digital real-time clock (RTC) is a low-power
clock/calendar that does not require a crystal. The
device operates from a digital clock input pin at one of
four frequencies: 32.768kHz, 8.192kHz, 60Hz, or 50Hz.
It 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/date
alarms, a programmable square-wave output, and 16
bytes of SRAM are provided. Address and data are
transferred serially through a 2-wire bidirectional bus.
Features
鈾?/div>
RTC Counts Seconds, Minutes, Hours, Day, Date,
Month, and Year with Leap-Year Compensation
Valid Up to 2100
鈾?/div>
Two Programmable Alarms
鈾?/div>
Programmable Square-Wave Output
鈾?/div>
Operates from a 32.768kHz, 8.192kHz, 60Hz, or
50Hz Digital Clock Signal
鈾?/div>
16 Bytes of SRAM
鈾?/div>
Fast (400kHz) 2-Wire Interface
鈾?/div>
1.7V to 5.5V Operation
DS1375
Applications
RTC Complement to the DS32kHz TCXO
Utility Meters
Appliances
Consumer Electronics
Automotive
PART
DS1375
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
6 TDFN
TOP MARK
DS1375
Ordering Information
Typical Operating Circuit
+3V
RPU = t
r
/C
B
Pin Configuration
TOP VIEW
RPU
RPU
CLK
1
V
CC
SCL
SCA
CPU
CLK
V
BAT
V
CC
6
V
CC
SQW/INT
2
DS1375
5
SCL
DS1375
INT
SQWINT
DS32kHz
GND
3
4
SDA
GND
GND
TDFN, EXPOSED PAD
3mm x 3mm x 0.8mm
______________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

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