CY7C4245-15ASC Cypress Semiconductor Corp, CY7C4245-15ASC Datasheet
CY7C4245-15ASC
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CY7C4245-15ASC Summary of contents
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... High-speed, low-power, first-in first-out (FIFO) memories • (CY7C4425) • 256 x 18 (CY7C4205) • 512 x 18 (CY7C4215) • (CY7C4225) • (CY7C4235) • (CY7C4245) • High-speed 100-MHz operation (10 ns read/write cycle time) • Low power (I =45 mA) CC • Fully asynchronous and simultaneous read and write operation • ...
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... READ POINTER THREE–ST ATE READ OUTPUT REGISTER CONTROL – 17 RCLK REN V /SMODE GND GND GND 42x5–2 2 CY7C4425/4205/4215 CY7C4225/4235/4245 FF EF PAE PAF SMODE 42X5–1 TQFP Top View GND CY7C4425 CY7C4205 CY7C4215 CY7C4225 GND 40 CY7C4235 CY7C4245 GND 42X5–3 ...
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... Retransmit function is also available in standalone SS mode by strobing RT. Cascaded - Connected to WXO of previous device. Not Cascaded - Tied CY7C4425/4205/4215 CY7C4225/4235/4245 CY7C42X5-25 CY7C42X5- CY7C4235 CY7C4245 68-pin PLCC 68-pin PLCC 64-pin TQFP 64-pin TQFP (10x10/14x14) (10x10/14x14) /SMODE is tied CC /SMODE is tied /SMODE is tied to CC /SMODE is tied all other SS ...
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Pin Definitions (continued) Signal Name Description I/O RXI Read Expansion Input RXO Read Expansion O Output RS Reset OE Output Enable V /SMODE Synchronous CC Almost Empty/ Almost Full Flags Maximum Ratings (Above which the useful life may be impaired. ...
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Capacitance Parameter Description C Input Capacitance IN C Output Capacitance OUT AC Test Loads and Waveforms R11.1K 5V OUTPUT C L INCLUDING JIG AND SCOPE Equivalent to: THÉ EVENIN EQUIVALENT 410 OUTPUT Switching Characteristics Over the Operating Range Parameter ...
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Switching Characteristics Over the Operating Range (continued) Parameter Description t Clock to Programmable Almost-Full Flag PAFasynch (Asynchronous mode Clock to Programmable Almost-Full Flag PAFsynch (Synchronous mode Clock to Programmable Almost-Empty Flag PAEasynch (Asynchronous mode, ...
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Switching Waveforms (continued) Read Cycle Timing t RCLK t t ENS ENH REN EF Q – OLZ OE WCLK WEN [15] Reset Timing RS REN, WEN, LD EF,PAE FF,PAF Notes: 14. ...
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Switching Waveforms (continued) First Data Word Latency after Reset with Simultaneous Read and Write WCLK –D D (FIRSTVALID WRITE ENS WEN t SKEW2 RCLK EF REN Q – Empty Flag ...
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Switching Waveforms (continued) Full Flag Timing NO WRITE WCLK [13] t SKEW1 D – WFF FF WEN RCLK t t ENS REN LOW OE t DATA IN OUTPUT REGISTER Q – Half-Full Flag Timing t ...
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Switching Waveforms (continued) Programmable Almost Empty Flag Timing t CLKH WCLK WEN [19] ] PAE RCLK REN Programmable Almost Empty Flag Timing (applies only in SMODE (SMODE is LOW) t CLKH WCLK WEN WEN2 PAE t SKEW3 RCLK REN Notes: ...
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... PAF offset = m. Number of data words written into FIFO already = 64 – for the CY7C4425, 256 – for the CY7C4205, 512 – for the CY7C4215. 1024 – for the CY7C4225, 2048 – for the CY7C4235, and 4096 – for the CY7C4245. 24. PAF is offset = m. ...
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Switching Waveforms (continued) Write Programmable Registers t CLK t CLKH WCLK t ENS LD t ENS WEN – Read Programmable Registers t CLK t CLKH RCLK t ENS LD t ENS WEN Q –Q 0 ...
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Switching Waveforms (continued) Read Expansion Out Timing t CLKH WCLK RXO t ENS REN Write Expansion In Timing WXI WCLK Read Expansion In Timing RXI RCLK [33, 34, 35] Retransmit Timing FL/RT REN/WEN EF/FF and all async flags HF/PAE/PAF Notes: ...
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Architecture The CY7C42X5 consists of an array words of 18 bits each (implemented by a dual-port array of SRAM cells), a read pointer, a write pointer, control signals (RCLK, WCLK, REN, WEN, RS), and flags (EF, ...
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Flags are governed by the relative loca- tions of the read and write pointers and ...
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Depth Expansion Configuration (with Programmable Flags) The CY7C42X5 can easily be adapted to applications requir- ing more than 64/256/512/1024/2048/4096 words of buffering. Figure 2 shows Depth Expansion using three CY7C42X5s. Maxi- mum depth is limited only by signal loading. Follow ...
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Typical AC and DC Characteristics NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE 1.4 1.2 1.0 V =3. =25 C 0.8 A f=100 MHz 0 4.5 5.5 SUPPLY VOLTAGE (V) NORMALIZED t vs.SUPPLY A VOLTAGE 1.2 T =25 ...
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Ordering Information Synchronous FIFO Speed (ns) Ordering Code 10 CY7C4425-10AC CY7C4425-10ASC CY7C4425-10JC CY7C4425-10AI CY7C4425-10ASI CY7C4425-10JI 15 CY7C4425-15AC CY7C4425-15ASC CY7C4425-15JC CY7C4425-15AI CY7C4425-15ASI CY7C4425-15JI 25 CY7C4425-25AC CY7C4425-25ASC CY7C4425-25JC CY7C4425-25AI CY7C4425-25ASI CY7C4425-25JI 35 CY7C4425-35AC CY7C4425-35ASC CY7C4425-35JC CY7C4425-35AI CY7C4425-35ASI CY7C4425-35JI Package ...
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Synchronous FIFO Speed Package (ns) Ordering Code 10 CY7C4205-10AC CY7C4205-10ASC CY7C4205-10JC CY7C4205-10AI CY7C4205-10ASI CY7C4205-10JI 15 CY7C4205-15AC CY7C4205-15ASC CY7C4205-15JC CY7C4205-15AI CY7C4205-15ASI CY7C4205-15JI 25 CY7C4205-25AC CY7C4205-25ASC CY7C4205-25JC CY7C4205-25AI CY7C4205-25ASI CY7C4205-25JI 35 CY7C4205-35AC CY7C4205-35ASC CY7C4205-35JC CY7C4205-35AI CY7C4205-35ASI CY7C4205-35JI Package Name ...
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Synchronous FIFO Speed Package (ns) Ordering Code 10 CY7C4215-10AC CY7C4215-10ASC CY7C4215-10JC CY7C4215-10AI CY7C4215-10ASI CY7C4215-10JI 15 CY7C4215-15AC CY7C4215-15ASC CY7C4215-15JC CY7C4215-15AI CY7C4215-15ASI CY7C4215-15JI 25 CY7C4215-25AC CY7C4215-25ASC CY7C4215-25JC CY7C4215-25AI CY7C4215-25ASI CY7C4215-25JI 35 CY7C4215-35AC CY7C4215-35ASC CY7C4215-35JC CY7C4215-35AI CY7C4215-35ASI CY7C4215-35JI Package Name ...
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Synchronous FIFO Speed (ns) Ordering Code 10 CY7C4225-10AC CY7C4225-10ASC CY7C4225-10JC CY7C4225-10AI CY7C4225-10ASI CY7C4225-10JI 15 CY7C4225-15AC CY7C4225-15ASC CY7C4225-15JC CY7C4225-15AI CY7C4225-15ASI CY7C4225-15JI 25 CY7C4225-25AC CY7C4225-25ASC CY7C4225-25JC CY7C4225-25AI CY7C4225-25ASI CY7C4225-25JI 35 CY7C4225-35AC CY7C4225-35ASC CY7C4225-35JC CY7C4225-35AI CY7C4225-35ASI CY7C4225-35JI Package Package Name ...
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Synchronous FIFO Speed (ns) Ordering Code 10 CY7C4235-10AC CY7C4235-10ASC CY7C4235-10JC CY7C4235-10AI CY7C4235-10ASI CY7C4235-10JI 15 CY7C4235-15AC CY7C4235-15ASC CY7C4235-15JC CY7C4235-15AI CY7C4235-15ASI CY7C4235-15JI 25 CY7C4235-25AC CY7C4235-25ASC CY7C4235-25JC CY7C4235-25AI CY7C4235-25ASI CY7C4235-25JI 35 CY7C4235-35AC CY7C4235-35ASC CY7C4235-35JC CY7C4235-35AI CY7C4235-35ASI CY7C4235-35JI Package Package Name ...
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... Synchronous FIFO Speed (ns) Ordering Code 10 CY7C4245-10AC CY7C4245-10ASC CY7C4245-10JC CY7C4245-10AI CY7C4245-10ASI CY7C4245-10JI 15 CY7C4245-15AC CY7C4245-15ASC CY7C4245-15JC CY7C4245-15AI CY7C4245-15ASI CY7C4245-15JI 25 CY7C4245-25AC CY7C4245-25ASC CY7C4245-25JC CY7C4245-25AI CY7C4245-25ASI CY7C4245-25JI 35 CY7C4245-35AC CY7C4245-35ASC CY7C4245-35JC CY7C4245-35AI CY7C4245-35ASI CY7C4245-35JI Document #: 38-00540 Package Package Name Type A65 64-Lead 14x14 Thin Quad Flatpack ...
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Package Diagrams 64-Lead Thin Plastic Quad Flat Pack A65 64-Pin Thin Quad Flat Pack A64 24 CY7C4425/4205/4215 CY7C4225/4235/4245 ...
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... Plastic Leaded Chip Carrier J81 © 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 a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user ...