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| Accutek Microcircuit Corporation DESCRIPTION The Accutek AK632512AW SRAM Module consists of fast high performance SRAMs mounted on a low height, 64 pin SIM Board. The module utilizes four 36 pin 512K x 8 SRAMs in 400 mil SOJ packages and four decoupling capacitors mounted two on the front side and two on the back side of a printed circuit board. The SRAMs used have common I/O functions and single output enable 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 to provide for the lowest height off the board. The module conforms to JEDEC-standard size. The Presence Detect feature has been disabled on this 64 pin module. The customer must jumper his board to provide density identification. The available 72 pin module has the Presence Detect feature operational. 1 AK632512AW - 64 Pin Version 524,288 x 32 Bit CMOS / BiCMOS Static Random Access Memory Front View 32 33 64 Back View 64 33 32 1 FEATURES * 524,288 x 32 bit organization * Similar to JEDEC standard 64 pin SIM format except that A18 replaces PD1 on Pin #3 * 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 maximum * Power: 720mA Max Active (20 nSEC) 760mA Max Active (15 nSEC) 800mA Max Active (12 nSEC) 200mA Max Standby * Presence Detect, PD0 is open 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) * TTL-compatible inputs and outputs * Single 5 volt power supply - AK632512AW * Single 3.3 volt power supply - AK632512AW/3.3 * Operating free air temperature 00 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 industry-compatible 512K x 8 SRAMs from several SRAM manufacturers. PIN NOMENCLATURE A0 - A18 CE1 - CE4 DQ1 - DQ32 OE PD0 Vcc Vss WE Address Inputs Chip Enable Data In/Data Out Output Enable Presence Detect 5v Supply Ground Write Enable PIN ASSIGNMENT PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL PIN # SYMBOL FUNCTIONAL DIAGRAM A0 - A18 + WE + OE + 19 A0 - A18 * WE DQ1 - DQ8 + DQ1 - DQ8 * OE CE 1 2 3 4 5 6 7 8 9 10 11 12 Vss PD0 A18 DQ1 DQ9 DQ2 DQ10 DQ3 DQ11 DQ4 DQ12 Vcc A0 A7 A1 A8 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 A2 A9 DQ13 DQ5 DQ14 DQ6 DQ15 DQ7 DQ16 DQ8 Vss WE A15 A14 CE2 CE1 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 CE4 CE3 A17 A16 OE Vss DQ25 DQ17 DQ26 DQ18 DQ27 DQ19 DQ28 DQ20 A3 A10 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 A4 A11 A5 A12 Vcc CE1 + A0 - A18 A13 * WE * A6 D21 DQ29 DQ22 DQ30 DQ23 DQ31 DQ24 DQ32 Vss CE3 + CE2 + A0 - A18 * WE * OE DQ1 - DQ8 + DQ9 - DQ16 CE * MODULE OPTIONS Leadless SIM: AK632512AW DQ1 - DQ8 * OE CE + DQ17 - DQ24 13 14 15 16 A0 - A168 * WE DQ1 - DQ8 * OE CE CE4 + + DQ25 - DQ32 PD0 = Open * * ORDERING INFORMATION PART NUMBER CODING INTERPRETATION Position 1 1 2 3 4 5 6 7 8 MECHANICAL DIMENSIONS Inches 0.640 MAX Product AK = Accutek Memory 2 Type 4 = Dynamic RAM 5 = CMOS Dynamic RAM 6 = Static RAM 3 Organization/Word Width 1 = by 1 16 = by 16 4 = by 4 32 = by 32 8 = by 8 36 = by 36 9 = by 9 4 Size/Bits Depth 64 = 64K 4096 = 4 MEG 256 = 256K 8192 = 8 MEG 1024 = 1 MEG 16384 = 16 MEG 5 Package Type G = Single In-Line Package (SIP) S = Single In-Line Module (SIM) D = Dual In-Line Package (DIP) W = .050 inch Pitch Edge Connect Z = Zig-Zag In-Line Package (ZIP) 6 Special Designation P = Page Mode N = Nibble Mode K = Static Column Mode W = Write Per Bit Mode V = Video Ram 7 Separator - = Commercial 00C to +700C M = Military Equivalent Screened (-550C to +1250C) I = Industrial Temperature Tested (-450C to +850C) X = Burned In 8 Speed (first two significant digits) DRAMS SRAMS 50 = 50 nS 8= 8 nS 60 = 60 nS 10 = 10 nS 70 = 70 nS 12 = 12 nS 80 = 80 nS 15 = 15 nS The numbers and coding on this page do not include all variations available but are shown as examples of the most widely used variations. Contact Accutek if other information is required. 0.405 0.395 0.250 C L 0.080 TYP CC LL 0.050 TYP 3.845 3.855 0.130 0.120 EXAMPLES: AK632512AW-15 512K x 32, 15 nSEC SRAM Module, SIM Configuration, 64 Pin 0.300 MAX ACCUTEK MICROCIRCUIT CORPORATION BUSINESS CENTER at NEWBURYPORT 2 NEW PASTURE ROAD, SUITE 1 NEWBURYPORT, MA 01950-4054 VOICE: 978-465-6200 FAX: 978-462-3396 Email: sales@accutekmicro.com Internet: www.accutekmicro.com Accutek reserves the right to make changes in specifications at any time and without notice. Accutek does not assume any responsibility for the use of any circuitry described; no circuit patent licenses are implied. Preliminary data sheets contain minimum and maximum limits based upon design objectives, which are subject to change upon full characterization over the specific operating conditions. |
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