QuickView

Technical Documents

Ordering Info

More Information

User Comments (0)

All

Data Sheet

FULL DATA SHEET (PDF, 460kB) Download   E-Mail

Description

The DS1553 is a full-function, year-2000-compliant (Y2KC) real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and "8k x 8 nonvolatile static RAM (NV SRAM)." User access to all registers within the DS1553 is accomplished with a bytewide interface as shown in Figure 1. The RTC registers contain century, year, month, date, day, hours, minutes, and seconds data in 24-hour BCD format. Corrections for day of month and leap year are made automatically.

Key Features

Integrated NV SRAM, RTC, Crystal, Power-Fail Control Circuit, and Lithium Energy Source Clock Registers are Accessed Identically to the Static RAM; These Registers are Resident in the 16 Top RAM Locations Totally Nonvolatile with Over 10 Years of Operation in the Absence of Power Precision Power-On Reset Programmable Watchdog Timer and RTC Alarm BCD-Coded Year, Month, Date, Day, Hours, Minutes, and Seconds with Automatic Leap Year Compensation Valid Up to the Year 2100 Battery Voltage Level Indicator Flag Power-Fail Write Protection Allows for ±10% VCC Power-Supply Tolerance Lithium Energy Source is Electrically Disconnected to Retain Freshness Until Power is Applied for the First Time Underwriters Laboratories (UL®) Recognized

Diagram

Block Diagram

Application Notes

Application Note 504: Design Considerations for Dallas Semiconductor Real-Time Clocks - DS1553 Application Note 507: PowerCap Package Allows for Density Upgrades, Surface Mount Assembly - DS1553, DS1553 Application Note 520: Using a Watchdog Timekeeping RAM with a Microcontroller - DS1553

Evaluation Kits

none

Design Guides

Real-Time Clocks (PDF)

Reliability Reports

Reliability Report: DS1553.pdf DS1553P.pdf Underwriters Laboratories (UL®) Recognized

Software/Models

none

Ordering Information
Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices: 1-12 of 12
DS1553	Notes	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1553-85+				EDIP;28 pin;630 mm² Outline Drawing: 21-0245 (PDF) Land Pattern: Not Available Use pkgcode/variation: MDF28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1553-100	5V, 100ns			EDIP;28 pin;626 mm² Outline Drawing: 21-0241 (PDF) Land Pattern: Not Available Use pkgcode/variation: MDP28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1553W-120	3.3V, 120ns			EDIP;28 pin;626 mm² Outline Drawing: 21-0241 (PDF) Land Pattern: Not Available Use pkgcode/variation: MDP28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1553W-150	3.3V, 150ns			EDIP;28 pin;626 mm² Outline Drawing: 21-0241 (PDF) Land Pattern: Not Available Use pkgcode/variation: MDP28-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1553-100+				EDIP;28 pin;626 mm² Outline Drawing: 21-0241 (PDF) Land Pattern: Not Available Use pkgcode/variation: MDP28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1553W-120+				EDIP;28 pin;626 mm² Outline Drawing: 21-0241 (PDF) Land Pattern: Not Available Use pkgcode/variation: MDP28+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1553WP-120	3.3V, 120ns			PCAP;34 pin;597 mm² Outline Drawing: 21-0246 (PDF) Land Pattern: Not Available Use pkgcode/variation: PC1-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1553WP-150	3.3V, 150ns			PCAP;34 pin;597 mm² Outline Drawing: 21-0246 (PDF) Land Pattern: Not Available Use pkgcode/variation: PC1-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1553WP-120+				PCAP;34 pin;597 mm² Outline Drawing: 21-0246 (PDF) Land Pattern: Not Available Use pkgcode/variation: PC1+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1553P	Notes	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1553P-85+				PCAP;34 pin;597 mm² Outline Drawing: 21-0246 (PDF) Land Pattern: Not Available Use pkgcode/variation: PC1+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1553P-100	5V, 100ns			PCAP;34 pin;597 mm² Outline Drawing: 21-0246 (PDF) Land Pattern: Not Available Use pkgcode/variation: PC1-2*	0°C to +70°C	RoHS/Lead-Free: No Materials Analysis
DS1553P-100+				PCAP;34 pin;597 mm² Outline Drawing: 21-0246 (PDF) Land Pattern: Not Available Use pkgcode/variation: PC1+2*	0°C to +70°C	RoHS/Lead-Free: Lead Free Materials Analysis

More Information

Real-Time Clock Design Guide (PDF) Other Watchdog Clocks

Related Products

DS9034PCX PowerCap with Crystal

Didn't Find What You Need?

Next Day Product Selection Assistance from Applications Engineers Parametric Search Applications Help

QuickView

Technical Documents

Ordering Info

More Information

Description   Key Features   Applications/Uses   Key Specifications   Diagram

Data Sheet   Application Notes   Design Guides   Engineering Journals   Reliability Reports   Software/Models   Evaluation Kits

Price and Availability   Samples   Buy Online   Package Information   Lead-Free Information

Related Products   Notes and Comments   Evaluation Kits