Non Volatile RAM (F-RAM & NVSRAM) Forum Discussions
Hi,
I'm performing signal integrity simulation of a board with NVRAM PN STK14C88-N35I.
Is there any IBIS model available for this module or similar one?
Thanks
Show LessI´m only using one FRAM memory in the I2C bus, can i leave address pins unconnected in the FM24V02A.
The focus in this F-RAM video is on ADAS for automotive applications where instant data capture is a critical feature for event data recorders. Learn how the fast-write, infinite endurance, low-power features can benefit your system.
Show LessI want to read (SPI) the entire FRAM memory at once to avoid the overhead, is it possible?
Is there any example code for the whole memory reading, thanks!
Show LessHi
We are unable to write beyond 0x10000 locations in FRAM FM25V10-G.
Is this a known issue with this device.
We are operating at SPI CLK of 20MHZ
Regards,
Midhun
write beyond 0x10000 locations in FRAM
Show LessThis blog is to announce the availability of a new software driver for STM32 family members that include ST's latest OctoSPI controller block, i.e.
STM32L4Rxxx, STM32L4Sxxx, STM32L4P5xx, STM32L4Q5xx,
STM32L5xxxx,
STM32H7A3xx, STM32H7B3xx
and more. Having a good, optimized and easy-to-use software driver is as important as a well designed and fast device. This is why we have developed and are now offering an optimized F-RAM driver for one of the industry's most popular microcontroller platforms: STM32. The latest STM32 SPI controller (OctoSPI) supports various SPI modes including x1, x4 and x8 width, SDR and DDR protocols as well as fully memory mapped access for both read and write operations.
Thanks to an advanced prefetching mechanism, the performance that can be achieved on these platforms is close to the theoretical maximum bus bandwidth (> 90%). Quad SPI (QPI) DDR mode F-RAM access is so fast that an Excelon QSPI F-RAM device can even be used as frame buffer. At SPI clock speeds of 17.5 MHz and higher it is fast enough to support the required read bandwidth of a STM32H7B3 Discovery Kit display controller/TFT. At 46.7 MHz it offers enough headroom to mix the traffic with concurrent frame buffer updates (write operations).
The following picture shows the snapshot of a graphical notepad application with a persistent frame buffer that is implemented via F-RAM. After a power loss (due to an emergency situation or on purpose), the old image is still fully available so that the application can be instantly and seamlessly resumed.
Of course, Cypress F-RAM can also be used for other purposes such as data logging or to make critical application data and variables persistent. In all cases, it provides instant writes (no data loss), infinite endurance as well as long retention.
The new Excelon F-RAM driver can be downloaded from Cypress' F-RAM github (in the STM32 directory).
Show LessGood day.
Some time ago, batch of CY14B101PA-SFXI and CY2308SXI-2 was purchased from one of the distributors. Visual and functional tests have shown compliance with the declared characteristics. But inside the case, the x-ray revealed differences. The supplier advised that this is normal and that the differences depend on the location of factory. The most interesting thing is that these positions were purchased from this supplier for a long time and there were no refusals or significant claims for him. This is fake or not? I would like to be sure if this is normal and what is the reason for these differences?
Would be grateful for your answer. JPG in attachment
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