SRAM Forum Discussions
Assert CS(chip enable) and OE (output enable) pins
Is it possible to continuously read the data signal by switching the address signal? (Page Lead)
I'm currently working on CY7C1471BV33-133BZI SRAM. Interfaced with MPC5777C power architecture via EBI.
I'm using Chip select 0 for communication, I also attached the schematic for reference.
Here my problem I'm able write data in SRAM but not in a particular address , When I try to write in one address data being written in all address. Is there any configuration I need to do?
kindly please respond and help me out with this.Show Less
CY7C1168KV18 has 16 pins for VDDQ and 10 pins for VDD.
In the recommended decoupling capacitors scheme (in AN4065) there isn't capacitor for each power pin.
Should each power pin (Vdd, Vddq) get 100nF and 10nF decoupling capacitors?
Regarding VTT should each pullups get decoupling capacitor?
I need your help to find my SRAM componnent in ordre to change it with another compatibility pin to pin and the same functionnalities.
If I understood your document PRODUCT CHANGE NOTIFICATION " PCN155107" I can use this choose:
Part Number Old: CY7C1041D-10ZSXI
Part number New component: CY7C1041GN-10ZSXI if it is confirmatory on your part, I thank you for replying me on the subject by yes or by no.
Thank you very mutch.
Dear Mrs, Mr,
I would like to know if the SRAM reference's below from Cypress are strictly the same since the acquirement by Infineon (no change of technology and no change of technical parameters) :
- CY7C1062GE30-10BGXI or CY7C1062GE30-10BGXIT
Many thanks in advance for your strong support
About the simulation model of CY62158ELL-45ZSXI I had the following VHDL, but is it possible to simulate with IBIS?
If possible, I would like to receive materials etc.
The customer wanted to use the IBIS model for SI analysis, so I was irritated to ask for materials.
Isn't it wrong with the following file?
Also, I get the following error, can you figure out the cause?
We are using the CY7C4122KV13/CY7C4142KV13 SRAM in our design, with the address parity logic enabled. For the same:
1) We need the switching characteristics and Switching Waveforms for Address Parity and Parity Error operations as they were not available in the product datasheet.
2) Also, I have a two part query I'll illustrated with an example. Suppose we initiated a transaction T0 and within the RL cycles of T0, we initiate two more transactions T1 and T2. After RL cycles, we receive a Parity Error for T0. Then:
a) if the parity error counter indicates there was only 1 error and after clearing the parity error, should all the transactions. i.e. T0, T1 and T2 need to be repeated or only the first transaction (T0).
b) related to this, if the parity error counter indicates there were 2 errors, does this imply that the first 2 consecutive transactions (T0 and T1) failed or can it be T0 and T2?
It would be ideal if a dedicated documentation for the address parity implementation is available.
I'd like to confirm whether CY62147GN30-45BVXI can support dual CE.
Ordering Code Definition shows 62417"2" can support Dual CE.
CY62147GN30 does not have "2". So I think that this parts# can not support dual CE.
But data sheet shows CY62147GN30-45BVXIT can support dual CE even if "Chip Enable : X = Blank."
Could you please tell me whether CY62147GN30-45BVXI can support dual CE?
I have already seen "SRAM Board Design Guidelines (Whitepaper)" document and it does not provide any information about length matching.
I am aware that I need to use length matching so that bad data is not sampled while reading or miswriting. But I can't find any documentation or information about what the length matching will be as a unit of time.
- Is it any need for length matching in the PCB layout when using these SRAM's?
Thanks and Regards,