250 MHz QDR II SRAM — throughput and bus architecture
The CY7C1312KV18-250BZXI: The QDR II (Quad Data Rate) architecture delivers two data words per clock edge on separate read and write ports, eliminating the bus-turnaround penalty of common-I/O SRAMs. The 165-ball FBGA package (13x15 mm) requires a controlled-impedance PCB layout for the 250 MHz parallel interface.
Active lifecycle — sourcing and compliance
No pin-compatible second-source or successor is recorded in the manufacturer's cross-reference data.
Package and board integration — 165-FBGA footprint
The supply voltage tolerance (1.7V to 1.9V) requires a regulated rail with less than 100 mV ripple at the device pins.