Alliance Memory launches 256Mbit CMOS SDRAMs in 54-pin TSOP II
Alliance Memory extends its offering of 256Mbit, high-speed CMOS SDRAMs. The x8 and x4 devices are supplied in a 54-pin, 400-mil plastic TSOP II package.
Alliance Memory’s product line- up offers densities from 16 to 512Mbit in a range of configurations and packages. These AS4C32M8SA and AS4C64M4SA SDRAMs complement the existing x16 and x32 parts.
Internally configured as four banks of 32M x 8 bits and 64M x 4 bits, respectively, the AS4C32M8SA and AS4C64M4SA are reliable drop-in, pin-for-pin-compatible replacements for devices used for image storage and video buffering in consumer and industrial products, and wearables. The SDRAMs offer a synchronous interface, operate from a single +3.3V (± 0.3V) power supply, and are lead (Pb)- and halogen-free.
The AS4C32M8SA and AS4C64M4SA have fast access time from clock down to 5.4 nano seconds and clock rates to 166MHz. They are available in commercial (0 to +70 degree C) and industrial (-40 to +85 degree C) operating temperature ranges. The SDRAMs offer programmable read or write burst lengths of one, two, four, eight, or full page, with a burst termination option. An auto pre-charge function provides a self-timed row pre-charge initiated at the end of the burst sequence. Refresh functions include auto- or self-refresh, and a programmable mode register allows the system to choose the most suitable modes to maximise performance.
Samples and production quantities of the new SDRAMs are available now, with lead times of four to eight weeks for large orders.
Alliance Memory provides 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 64kbit to 8Gbit. It is a privately held company, with headquarters in San Carlos, California, USA and regional offices in Europe, Asia, and South America.
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