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EDS2516APSA

Part Number	EDS2516APSA
Manufacturer	Elpida Memory
Description	256M bits SDRAM
Published	Apr 23, 2005
Detailed Description	DATA SHEET 256M bits SDRAM EDS2508APSA (32M words × 8 bits) EDS2516APSA (16M words × 16 bits) Description The EDS2508AP...
Datasheet	EDS2516APSA PDF File

Overview

DATA SHEET 256M bits SDRAM EDS2508APSA (32M words × 8 bits) EDS2516APSA (16M words × 16 bits) Description The EDS2508AP is a 256M bits SDRAM organized as 8,388,608 words × 8 bits × 4 banks.
The EDS2516AP is a 256M bits SDRAM organized as 4194304 words × 16 bits × 4 banks.
All inputs and outputs are referred to the rising edge of the clock input.
It is packaged in standard 60-ball µBGA.
Pin Configurations /xxx indicates active low signal.
1 A VSS DQ15 (DQ7)* DQ0 VDD 2 3 4 5 6 B DQ14 VSSQ (NC)* VDDQ DQ1 (NC)* DQ2 (DQ1)* Features • • • • • 3.
3V power supply Clock frequency: 133MHz (max.
) LVTTL interface Single pulsed /RAS 4 banks can operate simultaneously and independently • Burst read/write operation and burst read/single write operation capability • Programmable burst length (BL): 1, 2, 4, 8, full page • 2 variations of burst sequence  Sequential (BL = 1, 2, 4, 8)  Interleave (BL = 1, 2, 4, 8) • Programmable /CAS latency (CL): 2, 3 • Byte control by DQM : DQM (EDS2508AP) : UDQM, LDQM (EDS2516AP) • Refresh cycles: 8192 refresh cycles/64ms • 2 variations of refresh  Auto refresh  Self refresh C D DQ13 VDDQ (DQ6)* DQ12 DQ11 (NC)* (DQ5)* VSSQ DQ4 DQ3 (DQ2)* (NC)* VDDQ DQ5 (NC)* DQ6 (DQ3)* DQ7 (NC)* NC E DQ10 VSSQ (NC)* F DQ9 VDDQ (DQ4)* VSSQ G DQ8 (NC)* NC NC H NC VSS UDQM (DQM)* CLK VDD LDQM (NC)* /RAS J NC /WE K L NC /CAS CKE A12 NC /CS M A11 A9 BA1 BA0 N A8 A7 A0 A10 P A6 A5 A2 A1 R VSS A4 A3 VDD (Top view) Note: ( )* marked pins are for EDS2508APSA.
A0 to A12, BA0, BA1 DQ0 to DQ15 /CS /RAS /CAS /WE Address input Bank select address Data-input/output Chip select Row address strobe Column address strobe Write enable DQM CKE CLK VDD VSS VDDQ VSSQ NC Input/output mask Clock enable Clock input Power for internal circuit Ground for internal circuit Power for DQ circuit Ground for DQ circuit No connection Document No.
E0228E30 (Ver.
3.
0) Date Published August 2002 (K) Japan URL: http://www.
elpida.
com Elpida Memory, Inc.
2001-2002 EDS25...

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