Dear team,
I am reaching out regarding a current design concern raised by one of our valued customers. They are utilizing the CY62177EV30LL-55BAXI SRAM in their project but are exploring alternatives due to specific constraints. It is important to note that they are unable to alter their layout as per their design requirements.
Upon thorough evaluation, I have identified the RMLV3216AGBG as a potential replacement for them. Its performance metrics align well with the customer's needs, particularly with regard to the required access time of 55ns or less.
However, during my analysis, I've observed that the pinout of our device is not entirely compatible with the Infineon/Cypress device currently in use.
Pin G1 is an example of an unmatched pinout
I am seeking your expertise to explore potential solutions. I kindly request your input on alternative part numbers that may offer better pinout compatibility or any software-based workarounds that could facilitate the integration of the suggested replacement without necessitating layout changes.
Thank you for your attention to this inquiry, and I look forward to your valuable insights.
Kind Regards,
Shai
What are the specific limitations of CY62177EV30LL-55BAXI? Speak up and we'll sort out the restrictions for you
Hi Shai,Thank you for posting your question online.Let me check on this and I will get back to you as soon as possible.Best Regards,OV_Renesas
Hi Shai,
RMLV3216AGBG-5S2 is an altternative part for CY62177EV30LL-55BAXI, becuase DQ (I/O) pins can be assigned in any bit order, within the specific byte group: Lower Byte (DQ0~7) and Upper Byte (DQ8~15), respectively.
FYI, see the attached file: FBGA_P2P_Compatibility_Infineon-Renesas-32Mbit_20240220.pdf
A related article is posted on our SRAM FAQ page:
[Bit order of address / data pins | Renesas Customer Hub|https://en-support.renesas.com/knowledgeBase/20840875]Best Regards,OV_Renesas
FBGA_P2P_Compatibility_Infineon-Renesas-32Mbit_20240220.pdf
Thanks a lot.