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See Technical Specifications

DS1343E-3+T&R

Real Time Clock (RTC) IC Clock/Calendar 96B SPI 20-TSSOP (0.173", 4.40mm Width)

Manufacturer:

Analog Devices Inc.
Mfr.Part #:

DS1343E-3+T&R
Datasheet:

DS1343E-3+T&R Datasheet (PDF)
Mounting Style:

SMD/SMT
RTC Bus Interface:

Serial, 3-Wire, SPI
Date Format:

YY-MM-DD
Time Format:

HH:MM:SS
EDA/CAD Models:

Request Free CAD Models for DS1343E-3+T&R

Email: [email protected]

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Tel: +852 95804164

DS1343E-3+T&R General Description

The DS1343/DS1344 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, permitting longer life from a backup supply source. The devices also support high-ESR crystals, broadening the pool of usable crystals for the devices. The clock/calendar provides 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 24-hour or 12-hour format with an active-low AM/PM indicator.

Key Features

Low Timekeeping Current of 250nA (typ)
Compatible with Crystal ESR Up to 100kΩ
Versions Available to Support Either 6pF or 12.5pF Crystals
RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Through 2099
Power-Fail and Switch Circuitry
Three Operating Voltages
- 1.8V ±5%
- 3.0V ±10%
- 3.3V ±10%
Trickle-Charge Capability
Maintain Time Down to 1.15V (typ)
Support Motorola SPI Modes 1 and 3, or Standard 3-Wire Interface
Burst Mode for Reading/Writing Successive Addresses in Clock/RAM
96-Byte Battery-Backed NV RAM for Data Storage
Two Time-of-Day Alarms with Two Interrupt Outputs
Industrial Temperature Range
20-Pin TSSOP or 14-Pin TDFN Package

Application

Embedded Timestamping
Handheld Devices
Medical
Telematics

Specifications

Product Category	Real Time Clock	Mounting Style	SMD/SMT
RTC Bus Interface	Serial, 3-Wire, SPI	Date Format	YY-MM-DD
Time Format	HH:MM:SS	Battery Backup Switching	Backup Switching
RTC Memory Size	96 B	Supply Voltage - Max	5.5 V
Supply Voltage - Min	2.7 V	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	Function	Alarm, Calendar, Clock
Operating Supply Current	600 uA	Product Type	Real Time Clocks
Series	DS1343E	Factory Pack Quantity	2500
Subcategory	Clock & Timer ICs	Part # Aliases	DS1343E 90-1343E+3TR
Unit Weight	0.006737 oz