Hyper RAM Forum Discussions

Are there any Hyper RAM devices that can withstand 5+ krad?

If not, are there similar devices that would be recommended?  I need:

- 256Mb+

- 200MHz+

- 1.8V

- Small package (currently use 6x8mm BGA and 2.18x2.76mm die

Thank you!

I have a question about the RWDS timing during the CA interval where simulation disagrees with the datasheet.

The simulation shows a HyperRAM write cycle where a refresh collision has occurred. RWDS changes in the middle of the CA interval signaling 2x latency. The datasheet only shows RWDS valid on CS# low.

If it is important to know when RWDS should be sampled to guarantee proper latency.

Infineon S27KS0642 1.8V 64Mb 200MHz
S27KS0642GABHI020

Clock is 125MHz. Initial latency set to 5. Variable latency enabled

Infineon memory model with the correct `define selected

There is an error in the DCARS footprint in the S70KS1282GABHB03 datasheet.

https://www.infineon.com/cms/en/search.html#!term=S70KS1282GABHB03&view=all

https://www.infineon.com/dgdl/Infineon-S70KL1282_S70KS1282_3.0_V_1.8_V_128_Mb_(16_MB)_HYPERBUS_INTERFACE_HYPERRAM_(SELF-REFRESH_DRAM)-DataSheet-v03_00-EN.pdf?fileId=8ac78c8c7d0d8da4017d0ee9315b7210

Section 12.2, Figure 37. The *DCARS*-capable part should have signals PSC and PSC# on pins B5 and C5, respectively. Those signals are not shown.

Can you please confirm that the footprint is wrong so that we can proceed forward with our board fabrication?

In the past we have used the 64Mbit DCARS-capable part which has the correct DCARS footprint pinout shown with the PSC/PSC# signals. We just want to make certain that the footprint is in error and that the PSC/PSC# pins are where we think they are.

Why are there no HyperRAM parts with the DCARS feature in higher densities like 512Mbit?

The highest density hyperram with DCARS feature that I can find is 128Mbit.

The hyperram parts with the DCARS feature are a superior product in my opinion. Will higher density HyperRAMs w/ DCARS be released soon?

Hello I'm looking for a verilog simulation model for the S70KL1281 (Hyper Ram).
Could you please point me the link to download it? (Prefer the model can be supported by xcelium and questasim)

** Note ** : I have been using the one provided in public (s27kl0642), but there is something more specific I would like to confirm with the exact variant in S70KL1281. Hope Infineon support team can help me with this.

Thanks a lot!

Regards,
SY