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SYS32256ZK-15

Part Number	SYS32256ZK-15
Manufacturer	MOSAIC
Description	256K x 32 SRAM MODULE
Published	Aug 6, 2009
Detailed Description	www.DataSheet4U.com 256K x 32 SRAM MODULE SYS32256ZK/LK - 12/15/17 Issue 1.1 : January 1999 Description The SYS32256 is...
Datasheet	SYS32256ZK-15 PDF File

Overview

www.
DataSheet4U.
com 256K x 32 SRAM MODULE SYS32256ZK/LK - 12/15/17 Issue 1.
1 : January 1999 Description The SYS32256 is a plastic 8Mbit Static RAM Module offered in Industry Standard 64 pin ZIP and 64 lead SIMM package, organised as 256K x 32.
The module utilises eight fast 256K x 4 SRAMs housed in SOJ packages, and uses double sided surface mount techniques, to achieve a very high density module.
Four chip selects are used to independently enable the four bytes.
Reading or Writing is executed on individual or any combination of multiple bytes.
Two pins PD0 & PD1 are used to identify module memory density where alternative versions of the JEDEC standard modules can be interchanged.
Block Diagram A0-A17 OE WE 256Kx4 SRAM Features • • • • Access Times of 12/15/17 ns.
64 Pin ZIP & SIMM pinouts.
5 Volt Supply ± 10%.
Power Dissipation : Operating (32bit mode) 9.
0 W (maximum).
Standby (CMOS) -L 1.
3 W (maximum).
Completely Static Operation.
Equal Access and Cycle Times.
All Inputs and Outputs Directly TTL Compatible.
On-board Supply Decoupling Capacitors.
72 pin SIMM (SYS32256LKX) available.
• • • • • Pin Definition ZIP PD0 D0 D1 D2 D3 Vcc A7 A8 A9 D4 D5 D6 D7 WE A14 CS1 CS3 A16 GND D16 D17 D18 D19 A10 A11 A12 A13 D20 D21 D22 D23 GND 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63 GND PD1 D8 D9 D10 D11 A0 A1 A2 D12 D13 D14 D15 GND A15 CS2 CS4 A17 OE D24 D25 D26 D27 A3 A4 A5 VCC A6 D28 D29 D30 D31 Gnd PD0 PD1 D0 D8 D1 D9 D2 D10 D3 D11 Vcc A0 A7 A1 A8 A2 A9 D12 D4 D13 D5 D14 D6 D15 D7 Gnd WE A15 A14 CS2 CS1 SIMM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 D0-D3 256Kx4 SRAM D4-D7 CS1 256Kx4 SRAM D8-D11 256Kx4 SRAM D12-D15 CS2 256Kx4 SRAM D16-D19 256Kx4 SRAM D20-D23 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 CS3 256Kx4 SRAM D24-D27 256Kx4 SRAM D28-D31 CS4 Pin Functions Address Inputs Data Input/Output Chip Select Write En...

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