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[SOLVED] suitable cross reference for ATMLU742

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cgchas

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I recently ordered 24C64 8kx8 Serial CMOS EEPROM and what I got was ATMLU742.

The packaging is the same, but I cannot seem to find verification that ATMLU742 is a suitable crossreference for 24C64.

Can anybody point me in the right direction?

Charles
 

alexan_e

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I searched through google and there were a couple of Chinese sites with IC lists,

ATMLU742 is shown to be a AT26DF161 but I have no idea where is this format ATMLUxxxxx specified, I haven't seen it before so I can't verify if this info is correct.

Alex
 
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betwixt

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Not the same device!
24C64 is an 8k x 8 device
26DF161 is a 16Mb x 8 device.

Both made by Atmel.

Brian.
 
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cgchas

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I searched through google and there were a couple of Chinese sites with IC lists,

ATMLU742 is shown to be a AT26DF161 but I have no idea where is this format ATMLUxxxxx specified, I haven't seen it before so I can't verify if this info is correct.

Alex

I have since found a few lists that seem to confirm this as well.
It appears they sent a completely wrong part in the same DIP-8 package.

The AT26DF161 uses 2.7V - 3.6V Supply
The AT24C64 uses 2.7V - 5.5V Supply

I am glad I checked before plugging it in.

Best Regards,
Charles

---------- Post added at 10:54 ---------- Previous post was at 10:46 ----------

Not the same device!
24C64 is an 8k x 8 device
26DF161 is a 16Mb x 8 device.

Both made by Atmel.

Brian.

Yes, one is a 64K storage device and the latter is 2048K storage!
Not to mention that 26DF161 is Flash and 24C64 is an EEPROM.

Thank you for the response.
Charles
 

alexan_e

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Another difference is that the eeprom 24C64 uses I2C while 26DF161 uses SPI.

In any case if you want to use it then you can make a simple 3v3<->5v level translator to interface the 3v3 device with the 5v mcu
5V-3.3V bidirectional level converter « rocketnumbernine

Alex

---------- Post added at 19:29 ---------- Previous post was at 19:29 ----------

Another difference is that the eeprom 24C64 uses I2C while 26DF161 uses SPI.

In any case if you want to use it then you can make a simple 3v3<->5v level translator to interface the 3v3 device with the 5v mcu
5V-3.3V bidirectional level converter « rocketnumbernine

Alex
 

cgchas

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