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EM614163A Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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1 / 23 page EtronTech Em614163A-30/35/40/45 Etron Technology, Inc. 1F, No. 1, Prosperity Rd. 1, Science-Based Industrial Park, Hsinchu, Taiwan, R.O.C. TEL: (886)-3-5782345 FAX: (886)-3-5779001 Etro n Techn olo gy, Inc . rese rves th e right to make c han ges to its pro duc ts and spe cificat ion s April 1997 without notice. 256K x 16 High Speed EDO DRAM Preliminary Features • Fast Access Time: 30/35/40/45ns • Fast EDO Page Cycle Time: 13.3/15/16/18ns • EDO Page Mode Operation • Single +5V ¡Ó10% Power Supply • Low Power Dissipation • Individual Byte Control via Dual CAS Inputs • Three Refresh Modes • 512-Cycle Refresh in 8ms(9 rows and 9 columns) • TTL Compatible • 40-Pin, 400-mil Plastic SOJ Package, or 40/44-Pin, 400-mil Plastic TSOP-II Package. Ordering Information Part Number Speed Package Em614163A-30 30ns SOJ EM614163TS-30 30ns TSOP-II Em614163A-35 35ns SOJ EM614163TS-35 35ns TSOP-II Em614163A-40 40ns SOJ EM614163TS-40 40ns TSOP-II Em614163A-45 45ns SOJ EM614163TS-45 45ns TSOP-II Key Specifications Speed tRAC tCAC tAA tOEA tRC tPC -30 30ns 9ns 16ns 9ns 53ns 13.3ns -35 35ns 10ns 18ns 9ns 60ns 15ns -40 40ns 11ns 20ns 10ns 66ns 16ns -45 45ns 12ns 22ns 10ns 75ns 18ns Overview Pin Assignment (Top View) 40-Pin SOJ 40/44-Pin TSOP-II Vcc I/ O0 I/ O1 I/ O2 I/ O3 Vcc I/ O4 I/ O5 I/ O6 I/ O7 NC NC WE RAS NC A0 A1 A2 A3 Vcc Vss I/ O15 I/ O14 I/ O13 I/ O12 Vss I/ O11 I/ O10 I/ O9 I/ O8 NC LCAS UCAS OE A8 A7 A6 A5 A4 Vss 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 Vcc I/ O0 I/ O1 I/ O2 I/ O3 Vcc I/ O4 I/ O5 I/ O6 I/ O7 NC NC WE RAS NC A0 A1 A2 A3 Vcc Vss I /O 15 I /O 14 I /O 13 I /O 12 Vss I /O 11 I /O 10 I /O 9 I /O 8 NC LC AS UCAS O E A8 A7 A6 A5 A4 Vss 1 2 3 4 5 6 7 8 9 10 13 14 15 16 17 18 19 20 21 22 44 43 42 41 40 39 38 37 36 35 32 31 30 29 28 27 26 25 24 23 Pin Names A0 - A8 Address Inputs RAS Row Address Strobe UCAS Column Address Strobe (Upper Byte Control) LCAS Column Address Strobe (Lower Byte Control) WE Write Enable OE Output Enable I/O0 - I/O15 Data Input/Output VCC +5V Power Supply VSS Ground NC No Connection The Em614163A-30/35/40/45 is a high speed EDO(Extended Data Output) DRAM organized in 262,144 words by 16 bits. It supports EDO Page Mode and 16-bit data width for high data bandwidth applications. The EDO Page Mode is an accelerated access that provides a shorter page cycle and a faster data access time than the traditional Fast Page Mode. Compared with Fast Page Mode DRAM, the EDO DRAM data output will be held valid after CAS goes HIGH, as long as RAS and OE are held LOW and WE is held HIGH. This feature allows CAS precharge time to occur without the output data going invalid. Therefore, the EDO CAS timing can be condensed to carry more data out in a given period. The Em614163A-30/35/40/45 fully utilizes the EDO Page Mode advantages. It allows 512 random access within a page with a fast cycle time as short as 13.3/15/16/18 ns. The Em614163A-30/35/40/45 is ideally suitable for high performance graphics frame buffers, CD- ROMs, disk drivers, set top boxes, and DSP applications. |
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