CY7C421-25DMB QP SEMICONDUCTOR, CY7C421-25DMB Datasheet
CY7C421-25DMB
Specifications of CY7C421-25DMB
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CY7C421-25DMB Summary of contents
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... FIFOs to retransmit the data. Read enable (R) and write enable (W) must both be HIGH during retransmit, and then R is used to access the data. The CY7C419, CY7C420, CY7C421, CY7C424, CY7C425, CY7C428, CY7C429, CY7C432, and CY7C433 are fabricated using an advanced 0.65-micron P-well CMOS technology. In- put ESD protection is greater than 2000V and latch-up is pre- vented by careful layout and guard rings ...
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Logic Block Diagram WRITE W CONTROL WRITE POINTER THREE- STATE BUFFERS READ R CONTROL FLAG LOGIC EXPANSION LOGIC XI Selection Guide 256 x 9 7C419–10 512 x 9 (600-mil only) 512 x 9 7C421– (600-mil only) 1K ...
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Operating Range Range Ambient Temperature Commercial Industrial – +85 C Military – +125 C Electrical Characteristics Over the Operating Range Parameter Description V Output HIGH Voltage OH V Output LOW ...
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Electrical Characteristics Over the Operating Range Parameter Description I Operating Current CC I Operating Current CC1 I Standby Current SB1 I Power-Down Current SB2 [6] Capacitance Parameter Description C Input Capacitance IN C Output Capacitance OUT Note: 6. Tested initially ...
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Switching Characteristics Over the Operating Range Parameter Description t Read Cycle Time RC t Access Time A t Read Recovery Time RR t Read Pulse Width PR [6,9] t Read LOW to Low Z LZR [9,10] t Data Valid After ...
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Switching Characteristics Over the Operating Range Parameter Description LOW EFL HIGH HFH HIGH FFH t Read LOW to EF LOW REF t Read HIGH to FF HIGH RFF ...
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Switching Characteristics Over the Operating Range Parameter Description t Read Cycle Time RC t Access Time A t Read Recovery Time RR t Read Pulse Width PR [6,9] t Read LOW to Low Z LZR [9,10] t Data Valid After ...
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Switching Waveforms Asynchronous Read and Write LZR Q – – Master Reset MR [11 Half-Full Flag HALF FULL Notes: 11. W ...
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Switching Waveforms (continued) Last Write to First Read Full Flag LAST WRITE WFF FF Last Read to First Write Empty Flag LAST READ REF VALID DATA OUT [13] Retransmit FL/RT R,W ...
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Switching Waveforms (continued) Empty Flag and Read Data Flow-Through Mode DATA DATA OUT Full Flag and Write Data Flow-Through Mode DATA DATA OUT Document #: 38-06001 Rev RAE ...
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Switching Waveforms (continued) Expansion Timing Diagrams WRITE TO LAST PHYSICAL LOCATION OF DEVICE 1 W [15 – READ FROM LAST PHYSICAL LOCATION OF DEVICE XOL [15] XO (XI ) ...
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Writing Data to the FIFO The availability of at least one empty location is indicated by a HIGH FF. The falling edge of W initiates a write cycle. Data appearing at the inputs (D – ...
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FULL MR Document #: 38-06001 Rev CY7C419 9 CY7C420/1 CY7C424/5 CY7C428/9 CY7C432 CY7C419 9 CY7C420/1 CY7C424/5 CY7C428/9 CY7C432 CY7C419 9 CY7C420/1 CY7C424/5 ...
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... CY7C421–15JC CY7C421–15JI CY7C421–15VI CY7C421–15DMB CY7C421–15LMB 20 CY7C421–20JC CY7C421–20PC CY7C421–20VC CY7C421–20JI 25 CY7C421–25JC CY7C421–25PC CY7C421–25VC CY7C421–25JI CY7C421–25PI CY7C421–25DMB 30 CY7C421–30JC CY7C421–30PC Document #: 38-06001 Rev. *A Package Type Package Type ...
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... Speed (ns) Ordering Code 30 CY7C421–30JI CY7C421–30DMB CY7C421–30LMB 40 CY7C421–40JC CY7C421–40PC CY7C421–40VC CY7C421–40JI 65 CY7C421–65JC CY7C421–65PC CY7C421–65VC CY7C421–65JI CY7C421–65DMB Ordering Information (continued) Speed (ns) Ordering Code 40 CY7C424–40PC 65 CY7C424–65PC Ordering Information (continued) ...
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Ordering Information (continued) Speed (ns) Ordering Code 40 CY7C425–40JC CY7C425–40PC CY7C425–40VC CY7C425–40JI 65 CY7C425–65JC CY7C425–65PC Ordering Information (continued) Speed (ns) Ordering Code 20 CY7C428–20PC 25 CY7C428–25DMB 65 CY7C428–65PC Ordering Information (continued) Speed (ns) Ordering Code 10 CY7C429–10AC CY7C429–10JC CY7C429–10PC 15 ...
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Ordering Information (continued) Speed (ns) Ordering Code 25 CY7C432–25PC 40 CY7C432–40PC Ordering Information (continued) Speed (ns) Ordering Code 10 CY7C433–10AC CY7C433–10JC CY7C433–10PC CY7C433–10VC 15 CY7C433–15AC CY7C433–15JC CY7C433–15JI CY7C433–15PI CY7C433–15DMB CY7C433–15LMB 20 CY7C433–20AC CY7C433–20JC CY7C433–20PC 25 CY7C433–25JC CY7C433–25PC CY7C433–25VC CY7C433–25JI 30 ...
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MILITARY SPECIFICATIONS Group A Subgroup Testing DC Characteristics Parameters Subgroups Max ...
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Package Diagrams 28-Lead (600-Mil) CerDIP D16 MIL-STD-1835 D- 10Config.A Document #: 38-06001 Rev. *A 32-Lead Thin Plastic Quad Flat Pack A32 CY7C419/21/25/29/33 28-Lead (300-Mil) CerDIP D22 MIL-STD-1835 D- 15 Config.A Page ...
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Package Diagrams (continued) 32-Lead Plastic Leaded Chip Carrier J65 Document #: 38-06001 Rev. *A 32-Pin Rectangular Leadless Chip Carrier L55 MIL-STD-1835 C-12 28-Lead (600-Mil) Molded DIP P15 CY7C419/21/25/29/33 Page ...
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Package Diagrams (continued) Document #: 38-06001 Rev. *A © Cypress Semiconductor Corporation, 1997. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in ...
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... Document Title: CY7C419, CY7C421, CY7C425, CY7C429, CY7C433 256/512/1K/2K/4Kx9 Asynchronous FIFO Document Number: 38-06001 Issue REV. ECN NO. Date ** 106462 07/11/01 *A 122332 12/30/02 Document #: 38-06001 Rev. *A Orig. of Change Description of Change SZV Change from Spec Number: 38-00079 to 38-06001 RBI Added power up requirements to maximum ratings information. ...