Re: Charter of newsgroup

In comp.arch.embedded,
Al <no.spam@xxxxxxxxxx> wrote:
In article <56770$44f59823$54f63171$22626@xxxxxxxxxxxxxxxxxxxxxxxxxxx>,
Stef <stef33d@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:

In comp.arch.embedded,
Al <no.spam@xxxxxxxxxx> wrote:

At any rate, what I want to know is this. A real time clock chip like
the NJU6355 has three pins, CE, a clock and a data I/O. Can I do a
hardware CE and still have full functionality of the RT clock using just
the clock and I/O pins?

As you can see, I run out of PIC pins if I can't.

I can't tell you if it will work, but i'm doubtfull. If it doesn't,
you can always think about using an I2C RTC like the PCF8593, which
only requires 2 pins.

I2C would be nice but it requires a license from Phillips as I
understand it for commercial use.

If you are a chip vendor that sells IC's which have I2C in the data***
then you need a licence. Many chip vendors go around this by calling their
interface TWI (Two Wire Interface), which is in fact I2C.

If you are only using the I2C chips, you don't need a license. Maybe if you
advertise the I2C on the outside of the box, but why should you?

--
Stef (remove caps, dashes and .invalid from e-mail address to reply by mail)

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