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SPEAR600 Datasheet(PDF) 57 Page - STMicroelectronics |
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SPEAR600 Datasheet(HTML) 57 Page - STMicroelectronics |
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57 / 97 page ![]() SPEAr600 Electrical characteristics Doc ID 16259 Rev 3 57/97 5.5 3.3V I/O characteristics The 3.3 V I/Os are compliant with JEDEC standard JESD8b 5.6 DDR2 pin characteristics Table 23. Low voltage TTL DC input specification (3 V< VDD <3.6 V) Symbol Parameter Min Max Unit VIL Low level input voltage 0.8 V VIH High level input voltage 2 V Vhyst Schmitt trigger hysteresis 300 800 mV Table 24. Low voltage TTL DC output specification (3 V< VDD <3.6 V) Symbol Parameter Test Condition Min Max Unit VOL Low level output voltage IOL= X mA (1) 1. For the max current value (X mA) refer to Section 3: Pin description. 0.3 V VOH High level output voltage IOH= -X mA (1) VDD - 0.3 V Table 25. Pull-up and pull-down characteristics Symbol Parameter Test Condition Min. Max Unit RPU Equivalent pull-up resistance VI = 0 V 29 67 K Ω RPD Equivalent pull-down resistance VI = VDDE3V3 29 103 K Ω Table 26. DC characteristics Symbol Parameter Test Condition Min. Max Unit VIL Low level input voltage SSTL2 -0.3 VREF-0.15 V SSTL18 -0.3 VREF-0.125 V VIH High level input voltage SSTL2 VREF+0.15 VDDE2V5+0.3 V SSTL18 VREF+0.125 VDDE1V8+0.3 V Vhyst Input voltage hysteresis 200 mV Table 27. Driver characteristics Symbol Parameter Min Typ Max Unit RO Output impedance (strong value) 18.9 21 23.1 Ω Output impendance (weak value) 32.9 35 37.1 Ω |
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