IC43R32400

The IC43R32400 DDR SDRAM is a high-speed CMOS double data rate synchronous DRAM containing 128 Mbits. It is internally configured as a quad 1M x 32 DRAM ,with a synchronous interface (all signals are registered on the positive edge of the clock signal, CK).

Data outputs occur at both rising edges of CK and CK#. Read and write accesses to the SDRAM are burst oriented; accesses start at a selected location and continue for a programmed number of locations in a programmed sequence.

Accesses begin with the registration of a BankActivate command, which is then followed by a Read or Write command.

The IC43R32400 provides programmable Read or Write burst lengths of 2, 4, 8. An auto precharge function may be enabled to provide a self-timed row precharge that is initiated at the end of the burst sequence.

The refresh functions, either Auto or Self Refresh are easy to use.

In addition, IC43R32400 features programmable DLL option. By having a programmable mode register and extended mode register, the system can choose the most suitable modes to maximize its performance. These devices are well suited for applications requiring high memory bandwidth, result in a device particularly well suited to high performance main memory and graphics applications.