Translation - Japanese: MoBL SRAMのバイトパワーダウン機能。- Community Translated (JA)
Question: How does the Byte Power Down feature work in Cypress MoBL SRAMs ? or If I de-assert both BHE# & BLE#, will my device get deselected ? or Which devices have Byte Power Down feature available ?
This is a useful feature in low power applications, as it reduces the power consumption of the device when the IO’s are tri-stated.
MoBL SRAM's that incorporate the above BPD function have a nomenclature of CY621x7x, while those that do not incorporate the above function have a nomenclature of CY621x6x.
For the devices that incorporate the BPD function (the CY621x7x series), the byte enable access time tDBE = tACE (since the BHE#-BLE# combination is like chip enable), while for the devices that do not incorporate this function (the CY621x6x series), the byte enable access time tDBE = tDOE (since the BHE/BLE combination is like output enable).