Alliance Memory Extends 256Mb High-Speed CMOS SDRAMs with x8 and x4 Devices in the 54-pin 400-mil Plastic TSOP II Package
Alliance Memory extends its offering of 256Mb high-speed CMOS SDRAMs with x8 and x4 devices in the 54-pin 400-mil plastic TSOP II package.
Part Numbers: AS4C32M8SA-7TCN, AS4C32M8SA-7TCNTR, AS4C32M8SA-6TIN, AS4C32M8SA-6TINTR, AS4C64M4SA-7TCN, AS4C64M4SA-7TCNTR, AS4C64M4SA-6TIN, and AS4C64M4SA-6TINTR.
Key Specifications and Benefits:
Feature 54-pin 400-mil plastic TSOP II package
32M x 8 bit (AS4C32M8SA) and 64M x 4 bit (AS4C64M4SA) configurations
Synchronous interface
Operate from a single +3.3V (± 0.3V) power supply
Lead (Pb)- and halogen-free
Fast access time from clock down to 5.4 ns
Clock rates to 166 MHz
Available in commercial (0℃ to +70℃) and industrial (-40℃ to +85℃) temperature ranges
Programmable read or write burst lengths of 1, 2, 4, 8, or full page, with a burst termination option
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
A programmable mode register allows the system to choose the most suitable modes to maximize performance
Available in tape-and-reel package (part numbers ending in –TR)
Target Applications:
Image storage and video buffering
Consumer products and industrial products
Wearables
The Context: Alliance Memory is a market leader in SDRAMs, offering the broadest product line-up of any vendor, with densities from 16Mb to 512Mb in a wide range of configurations and packages. The 256Mb AS4C32M8SA and AS4C64M4SA complement the company’s existing x16 and x32 parts and provide reliable drop-in, pin-for-pin compatible replacements for a number of similar solutions used for image storage and video buffering in consumer products and industrial products.
Availability: Samples and production quantities of the SDRAMs are available now.
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