72 Mbit QDR II+ SRAM for high-throughput data paths
The CY7C25652KV18-500BZXC is a 72 Mbit synchronous SRAM organized as 2M x 36 bits, using the QDR II+ architecture with separate read and write ports running at 500 MHz clock frequency. At 500 MHz, the double-data-rate interface delivers 1 G transfers per second per port, so the aggregate read-plus-write bandwidth is 36 GB/s on the 36-bit data bus — this is the throughput a network switch or packet processor needs to keep its internal lookup tables from becoming the bottleneck.
Supply rails and temperature range
Operates from a 1.7 V to 1.9 V core supply, with the I/O voltage typically tracking the same rail — the narrow 200 mV tolerance means the board regulator must be set to 1.8 V ± 100 mV, and the ripple on that rail should stay under 50 mV peak-to-peak to avoid timing margin loss on the 500 MHz clock.
Supplied in a 165-ball LBGA (13x15 mm FBGA), 1.0 mm ball pitch — the 0.50 mm ball diameter requires a solder-paste stencil aperture of 0.45 mm square with a 100 µm foil thickness to get consistent ball-to-pad wetting. The package is moisture-sensitive; the tray indicates the shipping medium, not the MSL level — check the lot-specific label for the bake requirement before reflow if the floor life has been exceeded.