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7024S25JGB8 Datasheet(PDF) 4 Page - Integrated Device Technology |
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7024S25JGB8 Datasheet(HTML) 4 Page - Integrated Device Technology |
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4 / 22 page  6.42 IDT7024S/L High-Speed 4K x 16 Dual-Port Static RAM Military, Industrial and Commercial Temperature Ranges 4 Truth Table I: Non-Contention Read/Write Control Recommended DC Operating Conditions Truth Table II: Semaphore Read/Write Control(1) Absolute Maximum Ratings(1) NOTE: 1. There are eight semaphore flags written to via I/O0 and read from all of the I/O's (I/O0 - I/O15). These eight semaphores are addressed by A0 - A2. NOTE: 1. A0L — A11L ≠ A0R — A11R NOTES: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. VTERM must not exceed Vcc +10% for more than 25% of the cycle time or 10ns maximum, and is limited to < 20mA for the period over VTERM > Vcc + 10%. NOTES: 1. VIL > -1.5V for pulse width less than 10ns. 2. VTERM must not exceed Vcc + 10%. Inputs(1) Outputs Mode CE R/ W OE UB LB SEM I/O8-15 I/O0-7 H X XXXH High-Z High-Z Deselcted: Power-Down X X X H H H High-Z High-Z Both Bytes Deselected LL X L H H DATAIN High-Z Write to Upper Byte Only LL X H L H High-Z DATAIN Write to Lower Byte Only LL X L L H DATAIN DATAIN Write to Both Bytes LH LLH H DATAOUT High-Z Read Upper Byte Only L H LH LH High-Z DATAOUT Read Lower Byte Only LH LL L H DATAOUT DATAOUT Read Both Bytes X X H X X X High-Z High-Z Outputs Disabled 2740 tbl 03 Inputs(1) Outputs Mode CE(2) R/ W OE UB LB SEM I/O8-15 I/O0-7 HH L X X L DATAOUT DATAOUT Read Semaphore Flag Data Out XH L H H L DATAOUT DATAOUT Read Semaphore Flag Data Out H ↑ XXX L DATAIN DATAIN Write I/O0 into Semaphore Flag X ↑ XH H L DATAIN DATAIN Write I/O0 into Semaphore Flag L X XL XL ____ ____ Not Allowed LXXX L L ____ ____ Not Allowed 2740 tbl 04 Symbol Rating Commercial & Industrial Military Unit VTERM(2) Terminal Voltage with Respect to GND -0.5 to +7.0 -0.5 to +7.0 V TBIAS Temperature Under Bias -55 to +125 -65 to +135 oC TSTG Storage Temperature -65 to +150 -65 to +150 oC IOUT DC Output Current 50 50 mA 2740 tbl 05 Symbol Parameter Min. Typ. Max. Unit VCC Supply Voltage 4.5 5.0 5.5 V GND Ground 0 0 0 V VIH Input High Voltage 2.2 ____ 6.0(2) V VIL Input Low Voltage -0.5(1) ____ 0.8 V 2740 tbl 06 |
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