Details, datasheet, quote on part number: AK48256S
PartAK48256S
Category
Description256K X 8, 30 Pin Sip Module
CompanyAccutek Microcircuit Corporation
DatasheetDownload AK48256S datasheet
  

 

Features, Applications
DESCRIPTION

The Accutek AK48256 high density memory modules is a random access memory organized x 8 bit words. The assembly consists of eight standard x 1 DRAMs in plastic leaded chip carriers (PLCC) mounted on the front side of a printed circuit board. The module can be configured as a leadless 30 pad SIM or a leaded 30 pin SIP. This packaging approach provides to 1 density increase over standard DIP packaging. The operation of the AK48256 is identical to eight x 1 DRAMs. The data input is tied to the data output and brought out separately for each device, with common RAS, CAS and WE control. This common I/O feature dictates the use of early-write cycles to prevent contention of D and Q. Since the Write-Enable (WE) signal must always go low before CAS in a write cycle, Read-Write and Read-Modify-Write operation is not possible.

FEATURES

by 8 bit organization Optional 30 Pad leadless SIM (Single In-Line Module) or 30 Pin leaded SIP (Single In-Line Package) JEDEC standard pinout Each device has common D and Q lines with common RAS, CAS and WE control Operating free air temperature 700C 2.8 Watt active and 180 mW standby (max)

Upward compatible with AK581024, AK584096 and AK5816384 Functionally and Pin compatible with AK58256A

- DQ8 CAS RAS WE Vcc Vss NC Address Inputs Data In / Data Out Column Address Strobe Row Address Strobe Write Enable 5v Supply Ground No Connect

ORDERING INFORMATION PART NUMBER CODING INTERPRETATION

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.

8, 100 nSEC DRAM 30 pin SIM Configuration, Page Mode 8, 80 nSEC DRAM 30 pin SIP Configuration, Static Column Mode 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: accutek@seacoast.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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