question: 24c32 ic

[Sensei S]

I am currently experiementing with data storage on a Microchip PIC 24C32
EEPROM IC.
What I want to do is be able to READ the data from it but also somehow lock
the IC from any data being written to it.
Is it possible to jump/short maybe the SDA line to Vss (if this would
produce the desired results).

Basically I want to hardwire it for read only operations inline and prevent
the host device from being able to write to it.
Any thoughts would be appreciated.

email reply is fine.

 

[Wouter van Ooijen (www.vo]

I am currently experiementing with data storage on a Microchip PIC 24C32
EEPROM IC.
What I want to do is be able to READ the data from it but also somehow lock
the IC from any data being written to it.
Is it possible to jump/short maybe the SDA line to Vss (if this would
produce the desired results).

I don't see how that would produce the desired result.

Maybe use a different eeprom, IIRC there are types that have a
write-enable pin.


Wouter van Ooijen

-- ------------------------------------
http://www.voti.nl
PICmicro chips, programmers, consulting

 

[UncleWobbly]

I assume you know about the WP pin? Are you trying to protect the whole
memeory? the s4c32/64 only write protect the upper 8/16Kbits... could you
not use a bigger device and then only actually use the top 16K or so?

That's possible one way out.


"Sensei S" <senseis@hotmail.com> wrote in message
news:4q5Lb.70994$Cs3.10132583@news4.srv.hcvlny.cv.net...

I am currently experiementing with data storage on a Microchip PIC 24C32
EEPROM IC.
What I want to do is be able to READ the data from it but also somehow
lock
the IC from any data being written to it.
Is it possible to jump/short maybe the SDA line to Vss (if this would
produce the desired results).

Basically I want to hardwire it for read only operations inline and
prevent
the host device from being able to write to it.
Any thoughts would be appreciated.

email reply is fine.