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CYM9261B-50C Datasheet(PDF) 1 Page - Cypress Semiconductor

Part # CYM9261B-50C
Description  64K(128K, 256K, 512K) x 72 SRAM Module
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CYM9261B-50C Datasheet(HTML) 1 Page - Cypress Semiconductor

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CYM9260
CYM9261B
CYM9262A
CYM9263
64K x 72 SRAM Module
128K x 72 SRAM Module
256K x 72 SRAM Module
512K x 72 SRAM Module
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
Document #: 38-05002 Rev. **
Revised March 27, 2002
62A
Features
• Operates at 66 MHz
• Uses 64K x 18, 128K x 18, or 256K x 18 high performance
synchronous SRAMs
• 168-position Angled DIMM from Amp p/n 179508-2
• 3.3V inputs/data outputs
Functional Description
The CYM9260, CYM9261, CYM9262, and the CYM9263 are
high-performance synchronous memory modules organized
as 64K(9260), 128K(9261), 256K(9262), or 512K(9263) by 72
bits. These modules are constructed from either 128K x
18(9260,9261B,9262A) or 256K x 18 (9263) SRAMs in plastic
surface mount packages on an epoxy laminate board with
pins. The modules are designed to be incorporated into large
memory arrays.
The module is configured as either one or two banks, where
each bank has separate chip select and output enable con-
trols. Separate clocks are provided for every pair of SRAMs’s.
Multiple ground pins and on-board decoupling capacitors en-
sure high performance with maximum noise immunity.
All components on the cache modules are surface mounted on
a multi-layer epoxy laminate (FR-4) substrate. The contact
pins are plated with 150 micro-inches of nickel covered by 30
micro-inches of gold flash.
Logic Block Diagram - CYM9260
D[0:63]
DP[0:7]
A[15:0]
CLK[0:3]
PD1
PD
0
GND
NC
A15:0
OE
CS
OE[0:1]
64Kx72
CLK
WEH
WEL
WE[7:0]
CS[0:1]
DQ[0:15]
DQP[0:1]
ADSP
ADSP
ADSC
Vcc3
R2
R1
R3
Vcc3
R4
R1, R2, R3, R4 are optional resistors
R1, R2, R4 are mounted for access using ADSC
R3, R2, R4 are mounted for access using ADSP
BANK 0
BANK 0
CS0
OE0


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