Non Volatile RAM (F-RAM & NVSRAM)

HI,

I am using CY15B064Q-SXE IC as it suits my requirement.

In the product spec it was written that minimum operating temperature is -40 deg.

But in datasheet it is mentioned that, the operating temperature range when powered up is (-50 deg).

Which temperature should i consider.

What is the difference between them.

Thanks & Regards

Naresh

I am currently using a Cyprus CY14B101I in one of our product lines. This has an i2c bus interface and provides 128K bytes of storage.

I am looking for a larger storage option ideally 512K Bytes and found your FRAM pages mention larger storage option for i2c, SPI and QSPI. But when I go into product selection I can't see any devices which provide an i2c interface, only SPI.

Please advise if you have any i2c storage options for 256K Bytes or larger.

Thanks

I am designing with the CY14V104NA-BA45XIT. I don't see any guidance in the datasheets of app notes about power sequencing. Is there any requirement for enabling and disabling VCC and VCCQ in relation to each other? 

The MCU I use is stm32L476RG.

The test steps are as follows:

1. Put FRAM into hibernation mode,

2. Read the FRAM status register and read the value 0x00, indicating that FRAM has entered the hibernate state.

3. Put the MCU into hibernation mode,

4. Wake up MCU after 1 second,

4. Read the FRAM status register, and read the return value 0x40.

The problem is that I shouldn't be able to read the FRAM data at this point because it's still in hibernation mode and I haven't woken it up. I did not find that the CS PIN was pulled down for more than 4.5ms through the logic analyzer.