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Hyper RAM

Anonymous
Not applicable

Hi,

   I am looking for a Static-RAM kind of device that can meet our performance, space and power requirements. Our requirements are;

  1. Random read bandwidth of about 150 MB per sec for burst read size of 1
  2. about 50mA current at 1.8V (or 2.5V)
  3. smallest area like 8mmx8mm or something similar
  4. ambient temperature of -40C to +105C
  5. Minimum density of 8Mbits or more

I have quickly gone through your hyperRAM devices but I could NOT find bandwidth number for truly random access read. Most of our read will be of burst size 1. Our application will first write data to the hyperRAM and then it will perform random read operations (no switching between write and read operations constantly).

1. If the internal hyperRAM's DDR needs a refresh, what would be the worst case read time?

2. What is the worst case bandwidth for truly random read access?

3. Does not switching between read and write but just keep doing random read only make Read-Write-Recovery time (tRWR) zero?

4. If you have any recommendation for sync or async SRAM devies that could meet our requirements, please recommend us.

Thanks for your time and help.

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1 Solution
SudheeshK
Moderator
Moderator

Hi,

For single byte read, our HyperRAM device will not give a throughput up to 150MB/s. For, faster access, we recommend you to use our synchronous SRAM family of devices (Synchronous SRAM and QDR SRAMs). Visit the following link for more details, http://www.cypress.com/products/synchronous-sram . Please feel free to get back to us if you need any further assistance.

Thanks and Regards,

Sudheesh

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3 Replies
SudheeshK
Moderator
Moderator

Hi,

For single byte read, our HyperRAM device will not give a throughput up to 150MB/s. For, faster access, we recommend you to use our synchronous SRAM family of devices (Synchronous SRAM and QDR SRAMs). Visit the following link for more details, http://www.cypress.com/products/synchronous-sram . Please feel free to get back to us if you need any further assistance.

Thanks and Regards,

Sudheesh

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Anonymous
Not applicable

Hi Sudheesh,

                      Appreciate your response. I was not saying single byte read but burst size of 1. Could you please answer each my questions individually so that we can learn how much we can get out of hyperRAM if we use it?

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SudheeshK
Moderator
Moderator

Hi,

Sorry for the delay. Please find our application note available at: http://www.cypress.com/file/361046/download , it explains about efficient data access to our HyperBus memories.

Thanks and Regards,

Sudheesh

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