DS1307 Confusion

[greencardigan]

The I2C tutorial talks about the i2c DS1307 clock chip.

I bought one from microzed but the data sheet they have on their website is different to the datasheet on the Maxim website.

Here it is called a Serial real time clock.
http://www.microzed.com.au/PDF/ds1307.pdf

and here it is called an i2c real time clock.
http://datasheets.maxim-ic.com/en/ds/DS1307.pdf

Are they the same thing?

 

[marcos.placona]

Yeah, they are both the same. The pinout is the same, and everything else is the same. Just go for it. It's fairly simple to integrate with a 1307, but there's a picaxe and I2C manual that can give you some help in case you need. Just look at picaxe's website, and keep us posted in case you have any questions.

 

[eclectic]

The Rev Ed /Tech Supplies store

http://194.201.138.187/epages/Store.storefront/?ObjectPath=/Shops/Store.TechSupplies/Products/MIC055

also lists the 11 page “Serial” datasheet

http://www.rev-ed.co.uk/docs/DS1307.pdf

e

 

[westaust55]

Serial data transfer is where the 8 bits of data for a byte are sent one bit at a time sequentially down a single wire (data line). Same applies for radio comms. The alternative is parallel data transfer where multiple (usually 8 bits at a time, but for some LCD modules can be 4 bits at a time) are sent over a bus comprising multiple data wires.

The i2c comms bus is a serial data transfer bus.

In the case of i2c, the data is clocked and therefore synchronous whereas some serial LCD modules (such as the AXE033) have only a data line (no clock) and are therefore asynchronous.