Latest CMOS SDRAMs will be featured at electronica
At electronica 2018 in Munich, Alliance Memory will be highlighting its 512Mbit high-speed CMOS SDRAMs with new monolithic 64M x 8 (AS4C64M8SC-7TIN) and 32M x 16 (AS4C32M16SC-7TIN) devices in the 54-pin 400-mil plastic package, and a 16M x 32 (AS4C16M32SC-7TIN) device in the 86-pin TSOP II package.
The SDRAMs feature an LVTTL interface and operate from a single +3.3V (± 0.3V) power supply. They also feature a power down mode to lower power consumption, and offer a data mask for read/write control.
The CMOS SDRAMs are characterised by fast clock rates, up to 133MHz and are available in an industrial temperature range of -40 to +85 degree C.
Fully synchronous with the positive clock edge, the AS4C64M8SC-7TIN, AS4C32M16SC-7TIN, and AS4C16M32SC-7TIN deliver faster performance than DRAMs in general-purpose computing, medical, industrial, point-of-sale, automotive, and telecomms applications requiring high memory bandwidth, says Alliance Memory. They have minimal die shrinks, and can provide reliable drop-in, pin-for-pin-compatible replacements in these applications, eliminating the need for redesigns and part requalification.
The SDRAMs support sequential and interleave burst types with read or write burst lengths of one, two, four, eight, or full page. An auto pre-charge function provides a self-timed row pre-charge 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 maximise performance.
The CMOS SDRAMs are lead (Pb)- and halogen-free.
Samples and production quantities of the new SDRAMs are available now, with lead times of eight weeks for large orders.
Alliance Memory provides critical and hard-to-find DRAM and SRAM ICs for the communications, computing, consumer electronics, medical, automotive, and industrial markets. The product range includes DRAMs and SRAMs with commercial, industrial, and automotive operating temperature ranges and densities from 64kbit to 8Gbit.
Visitors to electronica 2018 can see the new SDRAMs at the Alliance Memory booth (B5 526).