AM29LV640DU-90RWHI additional marking

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PaFi_3886401
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10 questions asked 5 replies posted 5 questions asked

Hello friends,

Can anyone help pls. What are the additional symbols above and below?

DSCN4286.jpg

Best regards and thank U

Paolo

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1 Solution

Hello Paolo,

Thank you for contacting Cypress Semiconductor.

It appears you may have purchased the AM29LV640DU-90RWHI from an unauthorized distributor,

third party vendor or reseller, as these additional markings are not recognized as valid standard

markings from the factory.  These AM29LV640DU FLASH devices may have been refurbished or

possibly customer returns or RMA.  There appears to be a checksum that is marked on the device.

The checksum "CS = BCD4h"  indicates that this device has already been programmed by the

previous user/owner of this device.

The additional markings are not recognized as a valid standard markings from the factory.

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

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4 Replies
AlbertB_56
Moderator
Moderator
Moderator
500 replies posted 50 likes received 250 replies posted

Hello Paolo,

Thank you for contacting Cypress Semiconductor.

It appears you may have purchased the AM29LV640DU-90RWHI from an unauthorized distributor,

third party vendor or reseller, as these additional markings are not recognized as valid standard

markings from the factory.  These AM29LV640DU FLASH devices may have been refurbished or

possibly customer returns or RMA.  There appears to be a checksum that is marked on the device.

The checksum "CS = BCD4h"  indicates that this device has already been programmed by the

previous user/owner of this device.

The additional markings are not recognized as a valid standard markings from the factory. 

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

0 Likes

Hello Paolo,

Thank you for contacting Cypress Semiconductor.

It appears you may have purchased the AM29LV640DU-90RWHI from an unauthorized distributor,

third party vendor or reseller, as these additional markings are not recognized as valid standard

markings from the factory.  These AM29LV640DU FLASH devices may have been refurbished or

possibly customer returns or RMA.  There appears to be a checksum that is marked on the device.

The checksum "CS = BCD4h"  indicates that this device has already been programmed by the

previous user/owner of this device.

The additional markings are not recognized as a valid standard markings from the factory.

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

0 Likes

Hello Paolo,

Thank you for contacting Cypress Semiconductor.

It appears you may have purchased the AM29LV640DU-90RWHI from an unauthorized distributor,

third party vendor or reseller, as these additional markings are not recognized as valid standard

markings from the factory.  These AM29LV640DU FLASH devices may have been refurbished or

possibly customer returns or RMA.  There appears to be a checksum that is marked on the device.

The checksum "CS = BCD4h"  indicates that this device has already been programmed by the

previous user/owner of this device.

The additional markings are not recognized as a valid standard markings from the factory.

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

0 Likes

Hello Paolo,

Thank you for contacting Cypress Semiconductor.

It appears you may have purchased the AM29LV640DU-90RWHI from an unauthorized distributor,

third party vendor or reseller, as these additional markings are not recognized as valid standard

markings from the factory.  These AM29LV640DU FLASH devices may have been refurbished or

possibly customer returns or RMA.  There appears to be a checksum that is marked on the device.

The checksum "CS = BCD4h"  indicates that this device has already been programmed by the

previous user/owner of this device.

The additional markings are not recognized as a valid standard markings from the factory.

Best regards,

Albert

Cypress Semiconductor Corp.

An Infineon Technologies Company

0 Likes