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AN72390 - MIGRATING FROM CY14B101QX/CY14B512QX/CY14B256QX TO CY14B101QXA/CY14B512QXA/CY14B256QXA | Cypress Semiconductor


Last Updated: 
Aug 18, 2017

AN72390 provides details for migrating from the CY14B101QX/CY14B512QX/CY14B256QX nvSRAM parts to CY14B101QXA/CY14B512QXA/CY14B256QXA parts in applications. This application note also lists the parameter differences between the parts and the design considerations for migration when converting applications to CY14B101QXA/CY14B512QXA/CY14B256QXA.


Cypress CY14B101QXA is a 3 V, 1 Mbit (128 K x 8) serial (SPI) nvSRAM in 0.13 micron technology. This part is functionally equivalent to the CY14B101QX in the same technology with a few parameter enhancements and additional features. Due to these enhancements, there are a few differences in parameters. This application note highlights the differences between the CY14B101QX and the CY14B101QXA and lists the parameters of significance that must be considered while migrating. These differences and considerations are applicable to CY14B512QXA (3 V, 64 K x 8, 512 Kbit) and CY14B256QXA (3 V, 32 K x 8, 256 Kbit) serial (SPI) nvSRAMs, which are the replacement parts for CY14B512QX and CY14B256QX devices, respectively. This application note is described with respect to CY14B101QX and CY14B101QXA in the following sections. The same description applies to CY14B512QX/CY14B256QXand CY14B512QXA/ CY14B256QXA.

Dear valued customer,

Thank you for choosing our products. They come with all the know-how and passion that our engineers have put into it. As you probably already know, Cypress is now Infineon. This is a major step for our company, but also for the good of you. 

Reliability and business continuity are of utmost importance for us. Hence, we remain fully committed to honoring existing customer and distributor relationships. This includes offering the legacy Cypress product portfolio. We thank you very much for your trusting support.

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