Renesas Electronics Corporation Memory 70V639S12PRFI

The IDT70V639S12PRFI is a high-speed, 128K x 18 asynchronous dual-port static RAM designed for both commercial and industrial applications. It features true dual-port memory cells that allow simultaneous access to the same memory location, making it suitable for systems requiring concurrent read and write operations. The device operates at a maximum access time of 12 ns for commercial and 15 ns for industrial grades, with a single 3.3V (¬±150mV) power supply for core operations. This memory chip supports depth expansion through dual chip enables, enabling the cascading of multiple devices to increase data bus width to 36 bits or more without additional external logic. It includes on-chip port arbitration logic and semaphore signaling support, enhancing its functionality in multi-port applications. The IDT70V639 also features automatic power-down capabilities for low standby power consumption and is available in various package options, including a 128-pin Thin Quad Flatpack and a 208-ball fine pitch Ball Grid Array. The product is suitable for applications requiring fast, reliable memory access and is compliant with JTAG features, although JTAG is not supported in the 128-pin TQFP package due to pin count limitations. The industrial temperature range for selected speeds is -40¬8C to +85¬8C, making it versatile for various operating environments.