SRAM Forum Discussions

Hi,

I believe there are errors in the datasheet for P/N CY7C1380D. Please check
the following issues:

1. The timing diagrams on pages 24 and on are visually corrupted. The hatching used
to indicated don't care is only partially visible which makes the diagram confusing.

2. The "Functional overview" section describes the various access patterns for using the device.
However, the descriptions don't match up with the waveforms (even disregarding the visual issues).
For example, the description of "Single Read Accesses" asserts that during the first cycle of an ADSP_N read, the write signals GW_n/BWE_n must be deasserted. But the diagram marks them as Don't Care.

I compared both the diagram and the description to a newer datasheet for P/N CY7C1381KV33
and neither problem appears there. I believe that in (2) above the datasheet verbal description is wrong (indeed, it does not match the one in CY7C1381KV33). And the corrupted diagram seems
to be identical to the one in the newer datasheet, except for the missing hatched lines.

I've been unable to contact support so I'm hoping they keep an eye on reports via this channel.

Regards,
John

In the CY7C1380KV33 data sheet which Electrical and Switching parameters are tested at temperature and which are only tested at lab ambient? Are all components subjected to temperature testing or are only a sample per lot, date code... tested at temperature? 

Assert CS (chip enable), and OE (output enable) pins Is it possible to continuously read the data signal by switching the address signal while keeping it? (Page lead)

Hi,

I checked the data sheet, but it was not disclosed, so please let me check.
Are internal pull-up resistors installed on each of the control(CE1/OE/WE/BLE/BHE), address, and data pins?

Best Regards,

Kumada

Hi,

Using the memory CY7C1380D-167AXI, I'm looking for some information about the SEU and MBU rates of the memory.

Newer parts datasheets have a “Neutron Soft Error Immunity” table included but this older part does not have that information included.

Thank you,

Jim