Product Summary

The ds1302z is a Trickle Charge Timekeeping Chip which contains a real time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with less than 31 days, including corrections for leap year. The clock operates in either the 24–hour or 12–hour format with an AM/PM indicator

Parametrics

ds1302z absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: –0.5V to +7.0V; (2)Operating Temperature: 0℃ to 70℃ or - 40℃ to +85℃ for industrial; (3)Storage Temperature: –55℃ to +125℃; (4)Soldering Temperature: 260℃ for 10 seconds (DIP).

Features

ds1302z features: (1)31 x 8 RAM for scratchpad data storage; (2)Serial I/O for minimum pin count; (3)2.0–5.5V full operation; (4)Uses less than 300 nA at 2.0V; (5)8–pin DIP or optional 8–pin SOICs for surface mount; (6)Simple 3–wire interface; (7)TTL–compatible; (8)Optional industrial temperature range –40℃ to +85℃; (9)DS1202 compatible; (10)Recognized by Underwriters Laboratory.

Diagrams

ds1302z pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS1302Z
DS1302Z

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-6900: $1.20
DS1302Z/T&R
DS1302Z/T&R

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-2500: $1.03
2500-7210: $1.03
DS1302Z/T&R/C06
DS1302Z/T&R/C06

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-2500: $0.89
2500-8330: $0.89
DS1302Z+
DS1302Z+

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-1: $2.23
1-25: $1.50
25-50: $1.09
50-100: $1.07
DS1302Z+T&R
DS1302Z+T&R

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-1: $1.85
1-25: $1.40
25-50: $1.36
50-100: $1.22
DS1302Z+T&R/C07
DS1302Z+T&R/C07

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

Negotiable 
DS1302ZN
DS1302ZN

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-6930: $1.31
DS1302ZN/T&R
DS1302ZN/T&R

Maxim Integrated Products

Real Time Clock Trickle-Charge Timekeeping Chip

Data Sheet

0-2500: $1.13
2500-7200: $1.13