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Real Time Clock - DS3234

Description: RTC stands for real time clock folks. The DS3234 is a low-cost, extremely accurate SPI bus RTC with an integrated temperature compensated crystal oscillator (TCXO) and crystal.

And yes, a breakout board is coming soon.

Features:

Battery Backup Input for Continuous Timekeeping
High-precision (±2ppm)
Operating Temperature Range 0°C to +70°C
Low-Power Consumption
Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2099
Two Time-of-Day Alarms
Programmable Square-Wave Output
4MHz SPI Bus Supports Modes 1 and 3
Digital Temp Sensor Output: ±3°C Accuracy
Register for Aging Trim
Active-Low RST Input/Output
300-Mil, 20-Pin SO Package

Documents:

Datasheet

Pricing

images are CC BY-NC-SA 3.0

ASCII version

Comments 15 comments

jbaruffa | about a year ago 2

Vaild up to 2099? Is this the beginning of a Y2.1K bug?
tz | about a year ago 1

2100 if I remember right is NOT a leap year, so it probably does a mod4 test.
Now if only sparkfun would do I2C. A current mirror “breakout” would solve many bus problems.
fluidic | about a year ago 1

A nice addition. But could we get the DS3231 for I2C? And possibly update the DS1307 to DS1337?
rbean | about a year ago 1

Eagerly awaiting the breakout board. I was looking at this chip just a couple of days before you announced you were carrying it.
This would be a good match for your PRT-09216 3.3v step-up board.
Natman3400 | about a year ago 1

I think i ordered an I2C version from Maxim a while back.
It was a DS32B35-33#, It even had the same package.
JoshFranz | about a year ago 1

Shouldn’t this be under SMD ICs not General ICs?
mcuaust | about a year ago 1

fluidic:

A nice addition. But could we get the DS3231 for I2C?.
Why the desire for I2C?.
- orcinus | about a year ago 1
  
  Two wires less? Compatibility with existing I2C chips and peripherals?
  Also, do you really need duplex comms on a clock?
signal7 | about a year ago 1

Really looking for the breakout board on this one, but if it isn’t forthcoming soon, I’ll have to go with the chronodot from adafruit instead. Hope it’s on the way…
JChristensen | about a year ago 1

Anxiously awaiting the breakout board!
mbrown9412 | about a year ago 1

any due date on the board?
Rcrowley | about a year ago 1

Wow. We’ve been waiting a LONG time for a board for this chip. It looks like such a great set of features for a good price. I wonder why it seems to have been orphaned by SparkFun?
While I wait for SF, it looks like I can get a 20 Pin SOIC adapter for 70 cents from Futurlec. I’ll have to kludge the battery, etc. but really need to get on with the project.
- stilldavid | about a year ago 1
  
  Ask and you shall recieve!
UNTEngineer | about 8 months ago 1

is there an eagle library for this part?
- RobertC. | about 8 months ago 1
  
  It should be in the SFE library. We make a breakout for it, see below.