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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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AK632512W Fiches technique(PDF) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION |
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AK632512W Fiches technique(HTML) 1 Page - ACCUTEK MICROCIRCUIT CORPORATION |
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1 / 2 page  DESCRIPTION The Accutek AK632512 SRAM Module consists of fast high perfor- mance SRAMs mounted on a low height, 72 pin SIM or ZIP Board. The module utilizes four 36 pin 512K x 8 SRAMs in 400 mil SOJ packages and four decoupling capacitors mounted on the front side of a printed circuit board. The SRAMs used have common I/O functions and single output en- able functions. Also, four separate chip select (CE) connections are used to independently enable the four bytes. The modules can be supplied in a variety of access time values from 15 nSEC to 35 nSEC in CMOS or BiCMOS technology. The Accutek module is designed to have a maximum seated height of 0.640 inch SIM or 0.555 inch ZIP to provide for the lowest height off the board. Each conforms to JEDEC-standard sizes and pin-out configurations. Using four pins for module memory density identifi- cation, PD0,PD1,PD2 and PD3 minimizes interchangeability and design considerations when changing from one module size to the other in customer applications. FEATURES · 524,288 x 32 bit organization · JEDEC Standard 72 pin SIM or ZIP format · Common I/O, single OE and WE functions with four separate chip selects (CE) · Fast access times from 15 nSEC · Low height, 0.640 inch SIM or 0.555 inch ZIP maximum · Power: 720mA Max Active (20 nSEC) 760mA Max Active (15 nSEC) 800mA Max Active (12 nSEC) 200mA Max Standby · TTL-compatible inputs and outputs · Presence Detect, PD0, PD1, PD2 and PD3 for identifying module density · Downward compatible with 256K x 32 (AK632256), 128K x 32 (AK632128), 64K x 32 (AK63264) and 32K x 32 (AK63232), 64 pin SIM or ZIP designs · Upward compatible with 1 Meg x 32 (AK6321024) · Single 5 volt power supply - AK632512W, AK632512Z · Single 3.3 volt power supply - AK632512W/3.3, AK632512Z/3.3 · Operating free air temperature 0 0 to 700C ELECTRICAL SPECIFICATIONS Timing diagrams and basic electrical characteristics are those of the standard 512K x 8 SRAMs used to construct these modules. Accutek’s module design allows the flexibility of selecting indus- try-compatible 512K x 8 SRAMs from several SRAM manufacturers. Accutek Microcircuit Corporation AK632512W / AK632512Z 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory 1 36 37 72 136 37 72 72-Pin ZIP 72-Pin SIM Front View PIN NOMENCLATURE A0 -A18 Address Inputs CE1 -CE4 Chip Enable DQ1 -DQ32 Data In/Data Out OE Output Enable PD0 -PD3 Presence Detect Vcc 5v Supply Vss Ground WE Write Enable MODULE OPTIONS Leadless SIM: AK632512W Leaded SIP: AK632512G Leaded ZIP: AK632512Z PIN ASSIGNMENT PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL 1 NC 19A137 CE455 A5 2 NC 20A838 CE3 56 A12 3 PD2 21 A2 39 A17 57 Vcc 4 PD3 22 A9 40 A16 58 A13 5 Vss 23 DQ13 41 OE 59 A6 6 PD0 24 DQ5 42 Vss 60 DQ21 7 PD1 25 DQ14 43 DQ25 61 DQ29 8 DQ1 26 DQ6 44 DQ17 62 DQ22 9 DQ9 27 DQ15 45 DQ26 63 DQ30 10 DQ2 28 DQ7 46 DQ18 64 DQ23 11 DQ10 29 DQ16 47 DQ27 65 DQ31 12 DQ3 30 DQ8 48 DQ19 66 DQ24 13 DQ11 31 Vss 49 DQ27 67 DQ32 14 DQ4 32 WE 50 DQ20 68 Vss 15 DQ12 33 A15 51 A3 69 A18 16 Vcc 34 A14 52 A10 70 NC 17 A0 35 CE2 53A471 NC 18 A7 36 CE1 54 A11 72 NC PD0 = Open PD2 = Vss PD1 = Open PD3 = Open FUNCTIONAL DIAGRAM A0-A18 A0-A18 A0-A18 A0-A168 WE WE WE WE DQ1 - DQ8 DQ1 - DQ8 DQ1 - DQ8 DQ1 - DQ8 OE OE OE OE CE CE CE CE + + + + DQ1 - DQ8 DQ9 - DQ16 DQ17 - DQ24 DQ25 - DQ32 + A0 - A18 19 + * * * * + * * * * + + + + WE OE CE1 CE2 CE3 CE4 |
Numéro de pièce similaire - AK632512W |
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Description similaire - AK632512W |
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