Problem with connection to SPI SRAM 23K256

[hankshone]

I don't think the pins are 5V tolerent.
23K256 Datasheet shows max High-level input voltage (VIH) is VCC + 0.3
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Thanks Darrel I will test separately and see if I could get it through

[Darrel Taylor]

Sounds like a good idea.

Use a different chip. That one may not work anymore.
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[hankshone]

Sounds like a good idea.

Use a different chip. That one may not work anymore.
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I tested on a separate circuit with a 3.0Voltage supply using PIC16LF877A and this Ram chip. There was some results come out, but not correct....
For example I wrote 100 into the first 100 location and the result come out to be 66 most of the time but some are 65. If I worte 0~100 accordingly in from address 0~100. The reads are some data from 0~66, it is also increasing accordingly, along with address shifting higher...it is weired..
I was wondering whether there is some error with my codes for these setups....

[mikebar]

Hi Hankshone,
I'm experiencing the same exact problem like yours: always reading 255
I'm using a 23LVC1025, 5 volt SRAM memory chip with 5 volt micro. But still the same problem like yours.
Did you found what the problem was?

Best regards,
Mike.