QuickView

Technical Documents

Ordering Info

More Information

User Comments (0)

All

Status
Part Number	Status	Replacement	Explanation
DS1602	This product is No Longer Available. See Ordering Information for recommended replacements.	DS1682	There is no direct replacement. The DS1682 has an event counter and elapsed time counter.

Data Sheet

FULL DATA SHEET (PDF, 224kB) Download   E-Mail

Description

The DS1602 Elapsed Time Counter provides multiple-purpose, low-cost timekeeping with two 32-bit counters. One counter constantly maintains real time by counting seconds whether powered from system or from backup supplies. The other counts only when system power is active, which is useful for monitoring operational on-time for warranty or billing purposes related to equipment use. Under software control, this counter can also count signals to track external real-time events. Both counters output binary data that can be read in standard clock and calendar format using a software algorithm. Read/write communication is transmitted over a 3-wire serial port. The DS1602 directly attaches to a 32.768kHz crystal and can be made nonvolatile with a backup battery. Installed in a processor-controlled system, the DS1602 combines timekeeping and counting functions at extremely low cost with minimal current consumption that prolongs operational lifetime.

Key Features

Two 32-bit counters track time in seconds for >125 years One counter tracks real-time on system or battery power while battery input >2.5V One counter tracks elapsed time under system power and holds the count under battery power Clear function resets a selected counter to 0 Read/write serial port affords low pin count Maximum current drain <1µA with serial port disabled 1-byte protocol defines read/write, counter address, and software clear function Operating temperature range: -40°C to +85°C Underwriters Laboratories (UL®) Recognized

Application Notes

Application Note 30: Recording Power Cycling Information Using the DS1602/DS1603 - DS1602 Application Note 58: Crystal Considerations with Dallas Real-Time Clocks (RTCs) - DS1602 Application Note 504: Design Considerations for Dallas Semiconductor Real-Time Clocks - DS1602 Application Note 505: Lithium Coin-Cell Batteries: Predicting an Application Lifetime - DS1602 Application Note 517: DS1371/DS1372/DS1374 32-Bit Binary Counter Time Conversion - DS1602 Application Note 701: Using the DS32kHz with Dallas Real-Time Clocks - DS1602

Design Guides

Real-Time Clocks (PDF)

Reliability Reports

Reliability Report: DS1602.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: 1-6 of 6

DS1602	Free Sample	Buy	Status	Recommended Replacement	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
DS1602		N/A	No Longer Available	DS1682 There is no direct replacement. The DS1682 has an event counter and elapsed time counter.	PDIP(N);8 pin;80 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1602+		N/A	No Longer Available	DS1682	PDIP(N);8 pin;80 mm² Outline Drawing: 21-0043 (PDF) Land Pattern: Not Applicable Use pkgcode/variation: P8+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1602S-TRL		N/A	No Longer Available	DS1682	SOIC (W);8 pin;44 mm² Land Pattern: Not Available Use pkgcode/variation: W8-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1602S		N/A	No Longer Available	DS1682	SOIC (W);8 pin;44 mm² Land Pattern: Not Available Use pkgcode/variation: W8-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
DS1602S+		N/A	No Longer Available	DS1682	SOIC (W);8 pin;44 mm² Outline Drawing: 21-0262 (PDF) Land Pattern: Not Available Use pkgcode/variation: W8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
DS1602S+TRL		N/A	No Longer Available	DS1682	SOIC (W);8 pin;44 mm² Outline Drawing: 21-0262 (PDF) Land Pattern: Not Available Use pkgcode/variation: W8+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

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