IDT70121S55J IDT, Integrated Device Technology Inc, IDT70121S55J Datasheet
IDT70121S55J
Specifications of IDT70121S55J
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IDT70121S55J Summary of contents
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... Battery backup operation—2V data retention TTL-compatible, signal 5V (±10%) power supply Available in 52-pin PLCC Industrial temperature range (–40°C to +85°C) is available for selected speeds Green parts available, see ordering information I/O I/O Control Control MEMORY ARRAY 11 11 ARBITRATION INTERRUPT LOGIC 1 IDT70121S/L IDT70125S/L ...
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... Both devices provide two independent ports with separate control, address, and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory. An automatic power-down Pin Configurations (1,2,3) 05/27/04 ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Absolute Maximum Ratings Symbol Rating (2) V Terminal Voltage TERM with Respect to GND T Temperature BIAS Under Bias T Storage STG Temperature I DC Output OUT Current ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt DC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range Symbol Parameter I Dynamic Operating Current CC (Both Ports Active) I Standby Current SB1 (Both Ports - ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Data Retention Characteristics Symbol Parameter V V for Data Retention Data Retention Current CCDR (3) t Chip Deselect to Data Retention Time CDR (3) t ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range Symbol READ CYCLE t Read Cycle Time RC t Address Access Time AA t Chip Enable Access ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Timing Waveform of Read Cycle No. 1, Either Side ADDRESS t OH DATA PREVIOUS DATA VALID OUT BUSY OUT Timing Waveform of Read Cycle No. 2, Either Side ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range Symbol WRITE CYCLE (4) t Write Cycle Time WC t Chip Enable to End-of-Write EW t Address ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Timing Waveform of Write Cycle No. 1, R/W Controlled Timing ADDRESS R/W DATA (4) OUT DATA IN Timing Waveform of Write Cycle No. ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt AC Electrical Characteristics Over the Operating Temperature and Supply Voltage Range Symbol BUSY TIMING (For MASTER IDT70121) BUSY Access Time from Address t BAA BUSY Disable Time from ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Timing Waveform of Write with Port-to-Port Read and BUSY ADDR 'A' R/W 'A' DATA IN'A' (1) t APS ADDR 'B' BUSY 'B' DATA OUT 'B' NOTES ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Timing Waveform of BUSY Arbritration Controlled by Address ADDR 'A' ADDRESSES MATCH t (2) APS ADDR 'B' t BUSY 'B' NOTES: 1. All timing is the same for ...
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... BUSY = V , then No Change BUSY = V , then No Change 'H' = HIGH LOW DON’T CARE ( (2) ( (3) Port Disab le and in Power-Down Mode Power-DownMode (2) Data on Port Written Into Memory IN (3) Data in Memory Output on Port OUT High-Impedance Outputs and t timing. DDD (1,4) Right Port INT Industrial and Commercial Temperature Ranges ...
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... The message (9 bits) at 7FE or 7FF is user- defined, since addressable SRAM location. If the interrupt function is not used, address locations 7FE and 7FF are not used as mail boxes, but as part of the random access memory. Refer to Table II for the interrupt operation. Busy Logic Busy Logic provides a hardware indication that both ports of the RAM have accessed the same location at the same time ...
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IDT70121/IDT70125 High-Speed Dual-Port Static RAM with Busy & Interrupt Ordering Information XXXXX X XXX Device Power Speed Package Type NOTE: 1. Industrial temperature: for other speeds, packages and powers contact your sales office. Datasheet Document History 01/06/99: ...