What do i have to do for TTL UART signals with SC18IM700.

[dskim1]

Hi, All

I have a plan to use a SC18IM700 in my project.

Actually My system was controlled I2C, But now i have to change that to TTL UART signal.

Data sheet for SC18IM700 is show me RS232 transmit & receive input.

My issue is that RS232 UART signals are inverted in polarity with respect TTL UART signal.

My system was controlled TTL level circuit. and, I have a control library already.

So, I don't want to change my library.  Then, Do i have to add not-gate for my circuit?

I want to get answer clearly.

Thanks,

Dongsoo

[guoweisun]

Hi

I don't know much about your system,SC18IM700—an I2C-bus controller with a UART host interface—
is the perfect choice in the case where the host does not have an integrated I2C-bus
controller on-board, and the system designer wishes to use I2C-bus related devices in the
system. Between PC RS232 and SC18IM700 there is also a RS-232 Transceivers.

You can also refer to attached SCH.