AN41299 - Interfacing Cypress CY3686 DVK to NAND Flash Memory with Four Chip Selects | Cypress Semiconductor
AN41299 - Interfacing Cypress CY3686 DVK to NAND Flash Memory with Four Chip Selects
The Samsung K9NCG08U5M (64 Gbit) and K9WBG08U5M (32 Gbit) are NAND flash memory devices in a 48-pin TSOP stacked package. This application note considers these chips as examples to understand the interface between the CY3686 development kit (DVK) and NAND flash devices with four chip select requirement. K9NCG08U5M and K9WBG08U5M consist of four separate memory dies of 16 Gb and 8 Gb, respectively. Each of these devices requires an individual Chip Enable (CE) input and an individual Ready or Busy (R/B) output. The Cypress CY3686 DVK board contains eight separate 48-pin TSOP sockets. These sockets, however, only accept single package chips and have the connections for only two CE inputs and two R/B outputs.