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Mitu Raj
Mitu Raj
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This post has been bumped to the homepage by Community, but I'll leave another answer just for variety and for referancereference by others.

In my experineceexperience one should always follow the data sheet. If the data sheet indicates a pullup resistor should be used, there's probably a good reason for it.

is the resistor on the CS# line mandatory for the chip to communicate throughtthrough I2C

In theory, a direct connection is just like a very low resistance resistor (a very strong pull-up resistor). In many cases, a direct connection is fine. Unless you know the internals of the chip, however, there could be a reason to limit current to the port. That's why the datasheet might supply these suggestions. Following the datasheet is a good idea. Otherwise test, test, test.

This post has been bumped to the homepage by Community, but I'll leave another answer just for variety and for referance by others

In my experinece one should always follow the data sheet. If the data sheet indicates a pullup resistor should be used, there's probably a good reason for it.

is the resistor on the CS# line mandatory for the chip to communicate throught I2C

In theory, a direct connection is just like a very low resistance resistor (a very strong pull-up resistor). In many cases, a direct connection is fine. Unless you know the internals of the chip, however, there could be a reason to limit current to the port. That's why the datasheet might supply these suggestions. Following the datasheet is a good idea. Otherwise test, test, test.

This post has been bumped to the homepage by Community, but I'll leave another answer just for variety and for reference by others.

In my experience one should always follow the data sheet. If the data sheet indicates a pullup resistor should be used, there's probably a good reason for it.

is the resistor on the CS# line mandatory for the chip to communicate through I2C

In theory, a direct connection is just like a very low resistance resistor (a very strong pull-up resistor). In many cases, a direct connection is fine. Unless you know the internals of the chip, however, there could be a reason to limit current to the port. That's why the datasheet might supply these suggestions. Following the datasheet is a good idea. Otherwise test, test, test.

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jkessluk
jkessluk
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This post has been bumped to the homepage by Community, but I'll leave another answer just for variety and for referance by others

In my experinece one should always follow the data sheet. If the data sheet indicates a pullup resistor should be used, there's probably a good reason for it.

is the resistor on the CS# line mandatory for the chip to communicate throught I2C

In theory, a direct connection is just like a very low resistance resistor (a very strong pull-up resistor). In many cases, a direct connection is fine. Unless you know the internals of the chip, however, there could be a reason to limit current to the port. That's why the datasheet might supply these suggestions. Following the datasheet is a good idea. Otherwise test, test, test.