CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18 36-Mbit QDR™-II+ SRAM 4-Word BurstArchitecture (2.0 Cycle Read Latency)Cypress Semiconductor Corporat
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 10 of 28Application ExampleFigure 1 shows the use of 4 QDR-II+
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 11 of 28Write Cycle Descriptions The write cycle description t
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 12 of 28Write Cycle Descriptions The write cycle description t
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 13 of 28IEEE 1149.1 Serial Boundary Scan (JTAG)These SRAMs inc
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 14 of 28IDCODEThe IDCODE instruction loads a vendor-specific,
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 15 of 28TAP Controller State DiagramThe state diagram for the
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 16 of 28TAP Controller Block DiagramTAP Electrical Characteris
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 17 of 28TAP AC Switching Characteristics Over the Operating Ra
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 18 of 28Identification Register Definitions Instruction FieldV
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 19 of 28Boundary Scan Order Bit # Bump ID Bit # Bump ID Bit #
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 2 of 28Logic Block Diagram (CY7C1241V18)Logic Block Diagram (C
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 20 of 28Power Up Sequence in QDR-II+ SRAMQDR-II+ SRAMs must be
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 21 of 28Maximum Ratings Exceeding maximum ratings may shorten
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 22 of 28CapacitanceTested initially and after any design or pr
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 23 of 28Switching Characteristics Over the Operating Range[22,
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 24 of 28Switching WaveformsFigure 4. Read/Write/Deselect Seque
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 25 of 28Ordering Information Not all of the speed, package and
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 26 of 28300 CY7C1241V18-300BZC 51-85195 165-ball Fine Pitch Ba
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 27 of 28Package DiagramFigure 5. 165-ball FBGA (15 x 17 x 1.40
Document Number: 001-06365 Rev. *D Revised March 12, 2008 Page 28 of 28QDR™ is a trademark of Cypress Semiconductor Corp. QDR RAMs and Quad Data Rate
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 3 of 28Logic Block Diagram (CY7C1243V18)Logic Block Diagram (C
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 4 of 28Pin ConfigurationsCY7C1241V18 (4M x 8)165-Ball FBGA (15
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 5 of 28Pin Configurations (continued)CY7C1243V18 (2M x 18)165-
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 6 of 28Pin DefinitionsPin Name IO Pin DescriptionD[x:0]Input-S
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 7 of 28CQ Echo Clock Synchronous Echo Clock Outputs. This is a
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 8 of 28Functional OverviewThe CY7C1241V18, CY7C1256V18, CY7C12
CY7C1241V18, CY7C1256V18CY7C1243V18, CY7C1245V18Document Number: 001-06365 Rev. *D Page 9 of 28Depth ExpansionThe CY7C1243V18 has a Port Select input
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