Alliance Memory Introduces New High-Speed CMOS Double Data Rate 2 (DDR2) Synchronous DRAMs With 512-Mb and 1-Gb Densities in 60-Ball (x8) and 84-Ball (x16) FBGA Packages

SAN CARLOS, Calif. — Mar. 10, 2014 — Alliance Memory today introduced a new line of high-speed CMOS double data rate 2 synchronous DRAMs (DDR2 SDRAM) with densities of 512 Mb (AS4C32M16D2) and 1 Gb (AS4C64M16D2, AS4C128M8D2) in 60-ball 8-mm by 10-mm by 1.2-mm and 84-ball 8-mm by 12.5-mm by 1.2-mm FBGA packages.

The devices released today provide reliable drop-in, pin-for-pin-compatible replacements for a number of similar solutions in automotive, industrial, consumer, and networking products requiring high memory bandwidth. The AS4C32M16D2 is internally configured as four banks of 8M words x 16 bits. The AS4C64M16D2 and AS4C128M8D2 are internally configured as eight banks of 8M x 16 bits and 16M x 8 bits, respectively. The DDR2 SDRAMs offer a synchronous interface, operate from a single + 1.8-V (± 0.1 V) power supply, and are lead (Pb)- and halogen-free.

The AS4C32M16D2, AS4C64M16D2, and AS4C128M8D2 feature a fast clock rate of 400 MHz and a data rate of 800 Mbps/pin, and they are offered in commercial (0 °C to +85 °C), industrial (-40 °C to + 95 °C), and automotive (-40 °C to +105 °C) temperature ranges. The DDR2 SDRAMs provide programmable read or write burst lengths of 4 or 8. An auto precharge function provides a self-timed row precharge initiated at the end of the burst sequence. Easy-to-use refresh functions include auto- or self-refresh while a programmable mode register allows the system to choose the most suitable modes to maximize performance.

Part Number	Density	Configuration	Package	Temp. Range
AS4C32M16D2-25BCN	512 Mb	32M x 16 bit	84-ball FBGA	0° to +85 °C
AS4C32M16D2-25BIN	512 Mb	32M x 16 bit	84-ball FBGA	-40 °C to +95 °C
AS4C32M16D2-25BAN	512 Mb	32M x 16 bit	84-ball FBGA	-40 °C to +105 °C
AS4C64M16D2-25BCN	1G	64M x 16 bit	84-ball FBGA	0° to +85 °C
AS4C64M16D2-25BIN	1G	64M x 16 bit	84-ball FBGA	-40 °C to +95 °C
AS4C64M16D2-25BAN	1G	64M x 16 bit	84-ball FBGA	-40 °C to +105 °C
AS4C128M8D2-25BCN	1G	128M x 8 bit	60-ball FBGA	0° to +85 °C
AS4C128M8D2-25BIN	1G	128M x 8 bit	60-ball FBGA	-40 °C to +95 °C
AS4C128M8D2-25BAN	1G	128M x 8 bit	60-ball FBGA	-40 °C to +105 °C

Samples of the new DDR2 SDRAMs are available now, with lead times of six to eight weeks for production quantities. Pricing for U.S. delivery starts at $1.30 per piece.