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H5PS5162GFRS6C Datasheet(PDF) 16 Page - Hynix Semiconductor |
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H5PS5162GFRS6C Datasheet(HTML) 16 Page - Hynix Semiconductor |
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16 / 64 page  Rev.1.7 / Feb. 2013 16 H5PS5162GFR series 3.3.3 OCD default characteristics Description Parameter Min Nom Max Unit Notes Output impedance See full strength default driver characteristics ohms 1 Output impedance step size for OCD calibration 0 1.5 ohms 6 Pull-up and pull-down mismatch 0 4 ohms 1,2,3 Output slew rate Sout 1.5 - 5 V/ns 1,4,5,6,7,8 Note 1. Absolute Specifications ( Toper; VDD = +1.8V ±0.1V, VDDQ = +1.8V ±0.1V). DRAM I/O specifications for timing,voltage, and slew rate are no longer applicable if OCD is changed from default settings. Please refer to the Device Operation & Timing Diagram of DDR2 for the Full Strength Default Driver Characteristics. 2. Impedance measurement condition for output source dc current: VDDQ=1.7V; VOUT=1420mV; (VOUT-VDDQ)/Ioh must be less than 23.4 ohms for values of VOUT between VDDQ and VDDQ-280mV. Impedance measurement condition for output sink dc current: VDDQ = 1.7V; VOUT = 280mV; VOUT/Iol must be less than 23.4 ohms for values of VOUT between 0V and 280mV. 3. Mismatch is absolute value between pull-up and pull-dn, both are measured at same temperature and voltage. 4. Slew rate measured from vil(ac) to vih(ac). 5. The absolute value of the slew rate as measured from DC to DC is equal to or greater than the slew rate as measured from AC to AC. This is guaranteed by design and characterization. 6. This represents the step size when the OCD is near 18 ohms at nominal conditions across all process corners/ variations and represents only the DRAM uncertainty. A 0 ohm value(no calibration) can only be achieved if the OCD impedance is 18 ohms +/- 0.75 ohms under nominal conditions. Output Slew rate load: 7. DRAM output slew rate specification applies to 400 , 533 and 667 MT/s speed bins. 8. Timing skew due to DRAM output slew rate mis-match between DQS / DQS and associated DQs is included in tDQSQ and tQHS specification. VTT 25 ohms Output (Vout) Reference point |
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