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What is Arduino®
Arduino
®
is an open-source prototyping platform based on easy-to-use hardware and
software. Arduino
®
boards are able to read inputs
–
light-on sensor, a finger on a button or a
Twitter message
–
and turn it into an output
–
activating of a motor, turning on an LED,
publishing something online. You can tell your board what to do by sending a set of
instructions to the microcontroller on the board. To do so, you use the Arduino
programming language (based on Wiring) and the Arduino
®
software IDE (based on
Processing). Additional shields/modules/components are required for reading a twitter
message or publishing online. Surf to
for more information.
Product Overview
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.
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.
Specifications
•
power supply: 1 x CR2032 (included)
•
TTL compatible: VCC = 5 V
•
temperature range: 0 °C to +70 °C
Features
•
manages all timekeeping functions: real-time clock counts seconds, minutes, hours,
date of the month, month, day of the week, and year with leap year
•
31 x 8 battery-backed general-purpose RAM
•
simple serial port interfaces to most microcontrollers: simple 3-wire interface
•
single-byte or multiple-byte (burst mode) data transfer for read or write of clock or
RAM data
•
low power operation extends battery backup run time: 2.0 V to 5.5 V full operation
•
uses less than 300 µA @ 2.0 V
