72 Mbit DDR II+ SRAM — what the 500 MHz clock buys you
The CY7C25682KV18-500BZC: The 500 MHz clock and 4M x 18 organization deliver a 72 Mbit synchronous DDR II+ SRAM with a parallel interface.
Package and board integration — 165-ball FBGA
The 1.7V to 1.9V core supply is tight — a 1.8V rail with ±5% regulation covers it, but a 1.8V LDO with 1% initial accuracy is the safe choice to stay inside the window across load and temperature.
Obsolete — planning the BOM transition
For existing designs, the options are a last-time-buy through the factory channel if still within the LTB window, or sourcing from independent distribution for repair and bridge quantities. Any new design should select a currently-active DDR II+ or QDR SRAM with a compatible footprint and timing.
Sourcing posture for the BOM line
We source it through our independent supply network — each unit is verified against the original manufacturer's specifications before shipment. For production-run requirements, we can also search the spot market for date-code-locked lots or remaining factory inventory.