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AS4C8M16SA-6BAN Datasheet(PDF) 2 Page - Alliance Semiconductor Corporation |
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AS4C8M16SA-6BAN Datasheet(HTML) 2 Page - Alliance Semiconductor Corporation |
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2 / 55 page  AS4C8M16SA-Automotive Confidential 1 Rev. 2.0 Mar. /2015 128M – (8M x 16 bit) Synchronous DRAM (SDRAM) Confidential Advanced (Rev. 2.0, Mar. /2015) Features Fast access time from clock: 5 ns Fast clock rate: 166 MHz AEC-Q100 Compliant Fully synchronous operation Internal pipelined architecture 2M word x 16-bit x 4-bank Programmable Mode registers - CAS Latency: 2, or 3 - Burst Length: 1, 2, 4, 8, or full page - Burst Type: Sequential or Interleaved - Burst stop function Auto Refresh and Self Refresh 4096 refresh cycles/32ms Automotive Temperature: TA = -40~105℃ CKE power down mode Single +3.3V 0.3V power supply Interface: LVTTL 54-pin 400 mil plastic TSOP II package - Pb free and Halogen free 54-ball 8.0 x 8.0 x 1.2mm (max) FBGA package - Pb free and Halogen free Overview The 128Mb SDRAM is a high-speed CMOS synchronous DRAM containing 128 Mbits. It is internally configured as 4 Banks of 2M word x 16 DRAM with a synchronous interface (all signals are registered on the positive edge of the clock signal, CLK). Read and write accesses to the SDRAM are burst oriented; accesses start at a selected location and continue for a programmed number of locations in a programmed sequence. Accesses begin with the registration of a BankActivate command which is then followed by a Read or Write command. The SDRAM provides for programmable Read or Write burst lengths of 1, 2, 4, 8, or full page, with a burst termination option. An auto precharge function may be enabled to provide a self-timed row precharge that is initiated at the end of the burst sequence. The refresh functions, either Auto or Self Refresh are easy to use. By having a programmable mode register, the system can choose the most suitable modes to maximize its performance. These devices are well suited for applications requiring high memory bandwidth and particularly well suited to high performance PC applications. Table 1. Key Specifications AS4C8M16SA-Automotive -6 tCK3 Clock Cycle time(min.) 6 ns tAC3 Access time from CLK (max.) 5 ns tRAS Row Active time(min.) 42 ns tRC Row Cycle time(min.) 60 ns Table 2.Ordering Information Part Number Frequency Package Temperature Temp Range AS4C8M16SA-6BAN 166MHz 54-Ball FBGA Automotive -40~105℃ AS4C8M16SA-6TAN 166MHz 54-Pin TSOPII Automotive -40~105℃ B: indicates FBGA package T: indicates TSOP II package A: Automotive N: indicates Pb and Halogen Free |
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