Product Summary

The DS1602 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 DS1602 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 of the DS1602 is particularly useful in determining the operational time of equipment in which the device is used. Alternatively, this counter can also be used under software control to record real-time eve nts. Communication to and from the DS1602 takes place via a 3-wire serial port. A 1-byte protocol selects read/ write functions, counter clear functions and oscillator trim. A low cost 32.768kHz crystal attaches directly to the X1 and X2 pins.

Parametrics

DS1602 absolute maximum ratings: (1)Voltage Range on Any Pin Relative to Ground: -0.3V to +7.0V; (2)Operating Temperature Range: -40 to +85℃; (3)Storage Temperature Range: -55 to +125℃.

Features

DS1602 features: (1)Two 32-bit counters keep track of real-time and elapsed time; (2)Counters keep track of seconds for over 125 years; (3)Battery powered counter counts seconds from the time battery is attached until VBAT is less than 2.5V; (4)VCC powered counter counts seconds while VCC is above VTP and retains the count in the absence of VCC under battery backup power; (5)Clear function resets selected counter to 0; (6)Read/write serial port affords low pin count; (7)Maximum current drain of less than 1 μA from VBAT pin when serial port is disabled; (8)One byte protocol defines read/write, counter address and software clear function; (9)8-pin DIP or optional 8-pin SOIC; (10)Operating temperature range of -40 to +85℃.

Diagrams

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS1602
DS1602

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1602+
DS1602+

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1602S
DS1602S

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1602S+
DS1602S+

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1602S+TRL
DS1602S+TRL

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable 
DS1602S-TRL
DS1602S-TRL

Maxim Integrated Products

Real Time Clock

Data Sheet

Negotiable