MAXIM INTEGRATED PRODUCTS DS1302+. IC, TRICKLE CHARGE RTC, 1302, DIP8
111
Aug 3, 2021
Hardy Grantham
How to use Arduino Real Time Clock module with DS1302 chip
MAXIM INTEGRATED PRODUCTS DS1302 . IC, TRICKLE CHARGE RTC, 1302, DIP8
The DS1302 trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. This article covers its pinout, alternatives, circuit and more details about DS1302 .
DS1302
| Quantity | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $6.34867 | $6.35 |
| 10+ | $5.98931 | $59.89 |
| 100+ | $5.65029 | $565.03 |
| 500+ | $5.33047 | $2665.24 |
| 1000+ | $5.02874 | $5028.74 |
Symbol
Footprint
3D Model
The DS1302+trickle-charge timekeeping chip contains a real-time clock/calendar and 31 bytes of static RAM which 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 fewer 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.
Completely Manages All Timekeeping Functions
o Real-Time Clock Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
o 31 x 8 Battery-Backed General-Purpose RAM
Simple Serial Port Interfaces to Most Microcontrollers
o Simple 3-Wire Interface
o TTL-Compatible (VCC = 5V)
o Single-Byte or Multiple-Byte (Burst Mode) Data Transfer for Reading or Writing of Clock or RAM Data
Low Power Operation Extends Battery Backup Run Time
o 2.0V to 5.5V Full Operation
o Uses Less Than 300nA at 2.0V
8-Pin DIP and 8-Pin SO Minimizes Required Space
Optional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications
Underwriters Laboratories® (UL) Recognized
The Block Diagram is given to show the main elements of the serial timekeeper: shift register, control logic, oscillator, real-time clock, and RAM.
Maxim Integrated DS1302+ technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated DS1302+.
Maxim Integrated DS1302 technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated DS1302 .
| Product Attribute | Attribute Value | |
|---|---|---|
| Factory Lead Time | 9 Weeks | |
| Contact Plating | Tin | |
| Package / Case | 8-DIP (0.300, 7.62mm) | |
| Mounting Type | Through Hole | |
| Mount | Through Hole | |
| Number of Pins | 8Pins | |
| Weight | 930.006106mg | |
| Published | 2002 | |
| Packaging | Tube | |
| Operating Temperature | 0°C~70°C | |
| JESD-609 Code | e3 | |
| Pbfree Code | yes | |
| Part Status | Active | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 8Terminations | |
| ECCN Code | EAR99 | |
| Type | Clock/Calendar |
| Product Attribute | Attribute Value | |
|---|---|---|
| Additional Feature | BURST MODE RAM DATA TRANSFER; TIMEKEEPING CURRENT = 0.3UA | |
| Voltage - Supply | 2V~5.5V | |
| Terminal Position | DUAL | |
| Peak Reflow Temperature (Cel) | 260 | |
| Supply Voltage | 3.3V | |
| Terminal Pitch | 2.54mm | |
| Time@Peak Reflow Temperature-Max (s) | 30 | |
| Base Part Number | DS1302 | |
| Pin Count | 8 | |
| Number of Outputs | 1Output | |
| Operating Supply Voltage | 3.3V | |
| Power Supplies | 3/5V | |
| Interface | 3-Wire Serial | |
| Memory Size | 31B | |
| Operating Supply Current | 1.2mA | |
| Clock Frequency | 0.032MHz | |
| Logic Function | Clock |
| Product Attribute | Attribute Value | |
|---|---|---|
| Time Format | HH:MM:SS (12/24 hr) | |
| Date Format | YY-MM-DD-dd | |
| Current - Timekeeping (Max) | 0.3μA~1μA @ 2V~5V | |
| Time-Min | SECONDS | |
| Interrupt Capability | N | |
| Voltage - Supply, Battery | 2V~5.5V | |
| Volatile | YES | |
| Information Access Method | SERIAL, 3-WIRE | |
| Features | Leap Year, NVSRAM, Trickle-Charger | |
| Height | 4.45mm | |
| Width | 7.87mm | |
| Length | 9.91mm | |
| RoHS Status | ROHS3 Compliant | |
| Radiation Hardening | No | |
| REACH SVHC | No SVHC | |
| Lead Free | Lead Free |
Interfacing the DS1302+ with a microprocessor is simplified by using synchronous serial communication. Only three wires are required to communicate with the clock/RAM: CE, I/O (data line), and SCLK (serial clock). Data can be transferred to and from the clock/RAM 1 byte at a time or in a burst of up to 31 bytes. It is designed to operate on very low power and retain data and clock information on less than 1µW. The typical operating circuit is given below.
The market is evolving. The rules are changing. To keep your time to market short, you need integration at every level—from silicon to the supply chain. Count on Maxim Integrated to help you overcome design and architectural challenges, with integrated solutions for the industrial, medical, consumer, automotive, energy, computing, and communications realms. Maxim Integrated is also your source for power, interface, and even digital products that work in the analogue world. And they’re glad to support you with reference designs, tools, technical documents, packaging, and more. We invite you to explore their latest analogue integration offerings.
Download datasheets and manufacturer documentation for Maxim Integrated DS1302+.
Download datasheets and manufacturer documentation for DS1302
TAGS
Comments