IDT7202 IDT [Integrated Device Technology], IDT7202 Datasheet

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... FIFO might be different than the rate leaving the FIFO. Unlike a Static RAM, no address information is required because the read and write pointers advance sequentially. The IDT72021/ 031/041s can perform asynchronous and simultaneous read and write operations. There are four status flags, ( AEF ) to monitor data overflow and underflow ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT PIN CONFIGURATIONS INDEX J32-1 AEF PLCC TOP VIEW PIN DESCRIPTIONS Symbol ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT STATUS FLAG Number of Words in FIFO 1-127 1-255 1-511 128-512 256-1024 512-2048 513-896 1025-1792 2049-3584 897-1023 1793-2047 3585-4095 1024 2048 4096 ABSOLUTE MAXIMUM RATINGS Symbol Rating Com’l. ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT ELECTRICAL CHARACTERISTICS — IDT72021 (Commercial 5.0V 10 +70 C; Military Symbol Parameter (1) I Input Leakage Current LI (Any Input) (2) I Output Leakage Current LO V Output Logic “1” Voltage ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT ELECTRICAL CHARACTERISTICS — IDT72021 (Commercial 5.0V 10 Symbol Parameter f Shift Frequency Cycle Time RC t Access Time Recovery Time RR R (2) t Pulse Width RPW R t Pulse LOW to Data Bus at Low-Z ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT ELECTRICAL CHARACTERISTICS — IDT72031, IDT72041 (Commercial 5.0V 10 Symbol Parameter f Shift Frequency Cycle Time RC t Access Time Recovery Time RR R (2) t Pulse Width RPW R t Pulse LOW to Data Bus at Low-Z ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT TEST CONDITIONS Input Pulse Levels Input Rise/Fall Times Input Timing Reference Levels Output Reference Levels Output Load AEF, EF HF, FF NOTES AEF and may change status during Reset, but flags will be valid at t ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT LAST WRITE WFF FF LAST READ REF (1) DATA OUT NOTE Assume is asserted LOW AEF IGNORED FIRST READ WRITE t RFF Figure 4. Full Flag From Last Write to First Read ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT Figure 9. Almost-Empty/Almost-Full Flag and Half-Full Timings WHF HALF–FULL (1/ (7/8 FULL) AEF ALMOST–EMPTY AEF (1/8 FULL–1) Figure 9. Almost-Empty/Almost-Full Flag and Half-Full Timings ...

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... XOL XIS FIRST PHYSICAL W R OPERATING CONFIGURATIONS SINGLE DEVICE CONFIGURATION The IDT72021/031/041 is in the Single Device Configuration when the Expansion In ( grounded (see Figure 13). (HALF–FULL FLAG) WRITE (W) DATA IN (D) FULL FLAG (FF) RESET (RS) t XOH Figure 11. Expansion Out t XIR WRITE TO LOCATION Figure 12 ...

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... COMPOUND EXPANSION MODE The two expansion techniques described above can be applied together in a straight forward manner to achieve large FIFO arrays (see Figure 16). device. Figure 14 demonstrates an 18-bit word width by using two IDT72021/031/041 devices. Any word width can be at- tained by adding additional IDT72021/031/041s. AEF HF AEF ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT the write flow-through mode (Figure 18), the FIFO permits the writing of a single word of data immediately after reading one word of data from a full FIFO. The FF W the to be deasserted but the line, being LOW causes asserted again in anticipation of a new data word ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT IDT72021/ 031/041 DEPTH EXPANSION BLOCK D – NOTES: 1. For depth expansion block see section od Depth Expansion and Figure 15. 2. For Flag detection see section on Width Expansion and Figure 14. ...

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... IDT72021, IDT72031, IDT72041 CMOS ASYNCHRONOUS FIFO WITH RETRANSMIT DATA IN (1) DATA OUT NOTE Assume is asserted LOW. ORDERING INFORMATION IDT XXXXX X X Device Type Power Speed t RFF t A DATA OUT VALID Figure 19. Write Data Flow-Through Mode ...