Alliance Memory – AS4Cxxx Series DDR SDRAM

Product Overview

The AS4C4M16D1 DDR SDRAM is a highspeed CMOS double data rate synchronous DRAM containing 64 Mbits.

It is internally configured as a quad 1M x 16 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 AS4C4M16D1 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, AS4C4M16D1 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 and high performance.

Parts

AS4C16M16D1-5TCN

SDRAM DDR CMOS 256M 16Mx1 6.3V TSOP II 66 Pin

In stock

AS4C16M16D1-5TIN

SDRAM DDR CMOS 256M 16Mx1 6.3V TSOP II Industrial

In stock

AS4C32M16SA-7TCN

SDRAM CMOS 512M 32M x16 3.3V TSOP II 54 Pin

In stock

AS4C32M16SA-7TIN

SDRAM CMOS 512M 32Mx16 3V TSOP II 54 Pin Industrial

In stock

AS4C8M16D1-5TCN

SDRAM DDR CMOS 128M 8M x1 6 3V TSOPII 66 Pin Industrial

In stock

AS4C8M16S-6TIN

SDRAM CMOS 128M 8Mx16 3.3V TSOP II 54 Pin Industrial

In stock

AS4C8M16SA-7TCN

SDRAM CMOS 128M 8Mx16 3.3V TSOP II 54 Pin I

In stock

AS4C512M16D3L-12BCN

SDRAM DDR3 8G 512M x16 1.35V FBGA 96 Ball Industrial

In stock

AS4C256M16D3-12BCN

SDRAM DDR3 4G 256M x16 1.5V FBGA 96 Ball Industrial

In stock

AS4C8M16S-7TCN

SDRAM CMOS 128M 8Mx16 3.3V TSOP II 54 Pin I

In stock

AS4C256M16D3LB-12BCN

SDRAM DDR3 4G 256M x16 1.35V FBGA 96 Ball Commercial

In stock

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