In order to meet the memory market’s shortage of high-speed CMOS DDR3 and low voltage DDR3 SDRAMs, Alliance Memory has come up with a new die version (B die) for its 2Gb and 4Gb devices in the 96-ball FBGA package. 

 

The DDR architecture of these SDRAMs enables in achieving extremely fast transfer rates of 1600Mbps and clock rates of 800MHz. With minimal die shrinks, these devices offer reliable drop-in, pin-for-pin-compatible replacements for a number of similar solutions used in newer-generation microprocessors.

 

As far as the applications are concerned, these SDRAMs are ideally suitable for networking, medical, industrial, telecom, and consumer application. These also eliminate the need for costly redesigns and part requalification. 

 

 

The 2Gb AS4C128M16D3B-12BCN and 4Gb AS4C256M16D3B-12BCN DDR3 SDRAMs operate from a single +1.5V (±0.075V) power supply, while the 4Gb AS4C256M16D3LB-12BCN DDR3L SDRAM operates from a single +1.35V power supply. Moreover, these devices offer a data mask for write control and operate in the commercial temperature range of 0°C to 95°C. However, the 4Gb DDR3L SDRAM can also be obtained in an industrial temperature range of -40°C to +95°C.

 

Discussing further, the 2Gb SDRAMs are internally configured as 8 banks of 16M x 16 bits while the 4Gb DDR3 and DDR3L SDRAMs are available with 8 banks of 32M x 16 bits. All the devices support sequential and interleave burst types with read or write burst lengths of 4 or 8.

 

The devices are lead-free, halogen-free, RoHS-compliant and are equipped with easy-to-use refresh functions including auto or self-refresh. There is also an auto pre-charge function that renders a self-time row pre-charge initiated at the end of the burst sequence. 

 

 

 

Alliance Memory is a worldwide provider of critical and hard-to-find DRAM and SRAM memory ICs for the communications, computing, consumer electronics, medical, automotive, and industrial markets. The company’s product range includes DRAMs and SRAMs with commercial, industrial, and automotive operating temperature ranges and densities from 64Kb to 8Gb. Privately held, Alliance Memory maintains headquarters in San Carlos, California, and regional offices in Europe, Asia, and South America.