1 Reply Latest reply on Jan 16, 2019 3:43 AM by SudheeshK_26

    Differences between CY14B101PA, CY14B101Q and CY15B102Q


      Hello CYPRESS Team,



      I currently working on the automotive projet. I need some component who can generate a signal as long as possible (rising edge or falling edge) to wake up a microcontroller in sleep mode. I also want to reccord some setup information.



      I bought the CY14B101PA because it include a RTC and NvSRAM to memory. I test it but this component can't generate a signal on backup mode.(page 23 third paragraph).



      So I decided to choose a other RTC to wake up my microcontroller and took a additional component to reccord some data.



      After some research I found the the CY14B101Q and the CY15B102Q. If I understand your datasheets the CY14B101Q is the same component as the CY14B101PA without RTC application. The CY15B102Q has the same application than the CY14B101Q reccord data, but it doesn't required a Vcap to memory the SRAM information in the QuantumTrap because it use the F-RAM technologie. The memory access is faster and the SPI are a slower (25MHz for the CY15B102Q and 40MHz for the CY14B101Q). I think the CY15B102Q is a good choice even if is more expensive than the CY14B101Q, it automotive certified. But I have some questions about the CY15B102Q for the fast read memory data and the electronic design.



      The SPI speed of the CY15B102Q are up to 25MHz and except a misunderstanding from myself all op-codes are avaible at this speed.

      In that case can you tell me the differences between the read op-code and the fast read op-code?


      To make my electronic design may I use the AN64574 Figure (2. 8-pin SPI nvSRAM Interface (No VCAP) with Controller) for the CY15B102Q ?



      Best regards



      Gaëtan COBIGO