Can AMC7812 and DAC6578 use the same I2C bus?

Feng Li2

Other Parts Discussed in Thread: AMC7812, DAC6578

AMC7812's I2C is 3-wire series interface, but DAC6578's is 2-wire one. Are they connected in the same I2C bus? If yes, how to do?

over 11 years ago

0 Kevin Duke over 11 years ago

TI__Mastermind 46290 points

Both devices are standard 2-wire I2C interfaces.

0 Feng Li2 over 11 years ago in reply to Kevin Duke

Prodigy 80 points

AMC7812 has 3 bits address of I2C, but DAC6578 has only 2 bits address.

0 Kevin Duke over 11 years ago in reply to Feng Li2

TI__Mastermind 46290 points

ADDR0 and ADDR1 are each 3-state address inputs. Allowing for manipulation of the bottom 3 address bits. See page 30 of the datasheet.

0 Christopher Hall over 11 years ago in reply to Kevin Duke

TI__Mastermind 44600 points

Hi Feng,

I hope this is clear; I2C is standard and only requires 2 wires:

one for a clock (SCL)
and one for a data line (SDA)

The A0, A1, etc... wires are typically shorted to either ground or the power supply. They change the software address of the device, allowing multiple devices to share the same SCL and SDA wires.

Regards,
Chris

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Can AMC7812 and DAC6578 use the same I2C bus?