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DS1746-70

IC RTC CLK/CALENDAR PAR 32-EDIP

Product Category: Real Time Clocks
Mfr. Part #
DS1746-70
Manufacturer: Maxim Integrated
Package: 32-DIP Module (0.600", 15.24mm)
Lead Free Status /RoHS Status:
Data Sheet: DS1746-70 Datasheet
Inventory: In Stock

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Mfr. Part #: DS1746-70

Specifications
Product Details

Specifications

Manufacturer Maxim Integrated

Product Category Real Time Clocks

Series -

Type Clock/Calendar

Packaging Tube

Package-Case 32-DIP Module (0.600", 15.24mm)

Operating-Temperature 0Â°C ~ 70Â°C

Mounting-Type Through Hole

Features Leap Year, NVSRAM, Y2K

Interface Parallel

Voltage-Supply 4.5 V ~ 5.5 V

Supplier-Device-Package 32-EDIP

Memory Capacity 128KB

Time-Format HH:MM:SS (24 hr)

Date-Format YY-MM-DD-dd

Voltage-Supply-Battery -

Current-Timekeeping-Max 4mA @ 5V

Product Details

DESCRIPTION

The DS1746 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) and 128k x 8 nonvolatile static RAM. User access to all registers within the DS1746 is accomplished with a byte-wide interface as shown in Figure 1. The RTC information and control bits reside in the eight uppermost RAM locations. The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour binary-coded decimal (BCD) format. Corrections for the date of each month and leap year are made automatically.

FEATURES

â– Integrated NV SRAM, Real-Time Clock, Crystal, Power-Fail Control Circuit, and Lithium Energy Source
â– Clock Registers are Accessed Identically to the Static RAM. These Registers are Resident in the Eight Top RAM Locations.
â– Century Byte Register (i.e., Y2K Compliant)
â– Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power
â– BCD-Coded Century, Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap Year Compensation Valid Up to the Year 2100
â– Battery Voltage-Level Indicator Flag
â– Power-Fail Write Protection Allows for Â±10% VCC Power Supply Tolerance
â– Lithium Energy Source is Electrically
Disconnected to Retain Freshness Until
Power is Applied for the First Time
â– DIP Module Only
Standard JEDEC Byte-Wide 128k x 8 Static RAM Pinout
â– PowerCap Module Board Only
Surface Mountable Package for Direct Connection to PowerCap Containing Battery and Crystal
Replaceable Battery (PowerCap)
Power-On Reset Output
Pin-for-Pin Compatible with Other Densities of DS174xP Timekeeping RAM
â– Also Available in Industrial Temperature Range: -40Â°C to +85Â°C
â– Underwriters Laboratories (UL) Recognized

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Mfr. Part #: DS1746-70