Details, datasheet, quote on part number: AK632256BZ
Description256K X 32, 64 Pin Zip Module
CompanyAccutek Microcircuit Corporation
DatasheetDownload AK632256BZ datasheet


Features, Applications

The Accutek AK632256BZ SRAM Module consists of fast high performance SRAMs mounted on a low profile, 64 pin SIM or ZIP Board. The module utilizes four 28 pin x 4 SRAMs in 300 mil SOJ packages and four decoupling capacitor chips mounted on each 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 12 nSEC to 45 nSEC in CMOS or BiCMOS technology. The Accutek module is designed to have a maximum seated height of 0.500 inch to provide for the lowest height off the board. The modules conform to JEDEC standard sizes and pin-out configurations. Using two pins for module memory density identification, PD0 and PD1, minimizes interchangeability and design considerations when changing from one module size to another in customer applications.


x 32 bit organization JEDEC Standardized 64 pin SIM format Presence Detect PD0 and PD1 for identifying module density Common I/O, single OE functions with four separate chip selects (CE) Low height 0.500 inch maximum Downward compatible with 32 (AK63264) and 32 (AK63232)

Upward compatible with 32 (AK632512) and 1 Meg 32 (AK6321024) Fast access times range from 12 nSEC BiCMOS to 45 nSEC CMOS TTL-compatible inputs and outputs Single 5 volt power supply Operating temperature range in free air, to 700C

Timing diagrams and basic electrical characteristics are those of the standard x 4 SRAMs used to construct these modules. Accutek's module design allows the flexibility of selecting industry-compatible x 4 SRAMs from several semiconductor manufacturers.

- PD1 Vcc Vss WE Address Inputs Chip Enable Data In/Data Out Output Enable Presence Detect 5v Supply Ground Write Enable


Product AK = Accutek Memory Type 4 = Dynamic RAM 5 = CMOS Dynamic RAM 6 = Static RAM Organization/Word Width by 9 Size/Bits Depth = 4 MEG = 8 MEG = 1 MEG = 16 MEG 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) Special Designation P = Page Mode N = Nibble Mode K = Static Column Mode W = Write Per Bit Mode V = Video Ram Separator - = Commercial M = Military Equivalent Screened I = Industrial Temperature Tested X = Burned In Speed (first two significant digits) DRAMS SRAMS 15 nS

The numbers and coding on this page do not include all variations available but are show as examples of the most widely used variations. Contact Accutek if other information is required.


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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Some Part number from the same manufacture Accutek Microcircuit Corporation
AK632256BZ-12 256K X 32, 64 Pin Zip Module
AK632256W 256K X 32, 64 Pin Sim Module, Available With Solder or Gold Leads
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AK632256Z 256K X 32, 64 Pin Sim Module, Available With Solder or Gold Leads
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