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256Mb CMOS SDRAMs operate up to 166MHz: 54-pin TSOP II

256Mb CMOS SDRAMs operate up to 166MHz: 54-pin TSOP II

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By eeNews Europe



Internally configured as four banks of 32M x 8 bits and 64M x 4 bits, respectively, the AS4C32M8SA and AS4C64M4SA provide reliable drop-in, pin-for-pin-compatible replacements for a number of similar solutions 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 devices released today feature fast access time from clock down to 5.4 ns and clock rates to 166MHz, and they are available in commercial (0 to +70°C) and industrial (-40 to +85°C) operating temperature ranges. The SDRAMs offer programmable read or write burst lengths of 1, 2, 4, 8, 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. 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.

Alliance Memory – www.alliancememory.com

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