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DS1603

Maxim Integrated
Part Number DS1603
Manufacturer Maxim Integrated
Description Elapsed Time Counter
Published Mar 26, 2020
Detailed Description www. maxim-i c.com www.maxim-ic.com DS1603 Elapsed Time Counter Module FEATURES § Two 32-bit counters keep track of re...
Datasheet PDF File DS1603 PDF File

DS1603
DS1603

Overview
www.
maxim-i c.
com www.
maxim-ic.
com DS1603 Elapsed Time Counter Module FEATURES § Two 32-bit counters keep track of real-time and elapsed time § Counters keep track of seconds for over 125 years § Battery powered counter counts seconds from the time battery is attached until VBAT is less than 2.
5V § VCC powered counter counts seconds while VCC is above VTP and retains the count in the absence of VCC under battery backup power § Clear function resets selected counter to 0 § Read/write serial port affords low pin count § Powered internally by a lithium energy cell that provides over 10 years of operation § One-byte protocol defines read/write, counter address and software clear function § Self-contained crystal provides an accuracy of ±2 min per month § Operating temperature range of 0°C to +70°C § Low-profile SIP module § Underwriters Laboratory (UL) recognized PIN ASSIGNMENT VCC RST DQ NC CLK OSC GND 1 2 3 4 5 6 7 PIN DESCRIPTION RST CLK DQ GND VCC OSC NC - Reset - Clock - Data Input/Output - Ground - +5V - 1Hz Oscillator Output - No Connect DESCRIPTION The DS1603 is a real-time clock/elapsed time counter designed to count seconds when VCC power is applied and continually count seconds under battery backup power with an additional counter regardless of the condition of VCC.
The continuous counter can be used to derive time of day, week, month, and year by using a software algorithm.
The VCC powered counter will automatically record the amount of time that VCC power is applied.
This function is particularly useful in determining the operational time of equipment in which the DS1603 is used.
Alternatively, this counter can also be used under software control to record real-time events.
Communication to and from the DS1603 takes place via a 3-wire serial port.
A 1-byte protocol selects read/ write functions, counter clear functions and oscillator trim.
The device contains a 32.
768kHz crystal that will keep track of time to within ±2 min/mo.
An internal lithium...


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