72Mbit DDR-II SRAM in a 165-FBGA — what the clock and organization mean for the bus
The CY7C1568V18-375BZXC is a 72Mbit synchronous DDR-II SRAM organized as 2M x 36 bits, clocked at 375 MHz. The DDR-II interface transfers data on both rising and falling edges, so the effective data rate through the 36-bit-wide parallel bus is 750 MT/s per pin — the 375 MHz clock is the reference, not the throughput ceiling. Operating from a 1.7 V to 1.9 V supply, this part sits on a low-voltage rail common in networking and telecom line cards where the core logic runs at 1.8 V nominal. The commercial temperature range (0°C to 70°C) limits it to indoor, temperature-controlled environments — not extended industrial or outdoor deployment.
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