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W3HG2128M72ACER534AD6XG Datasheet(PDF) 4 Page - White Electronic Designs Corporation |
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W3HG2128M72ACER534AD6XG Datasheet(HTML) 4 Page - White Electronic Designs Corporation |
4 / 13 page W3HG2128M72ACER-AD6 PRELIMINARY 4 White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com White Electronic Designs May 2006 Rev. 5 RECOMMENDED DC OPERATING CONDITIONS All Voltages Referenced to VSS Parameter Symbol Rating Units Notes Min. Type Max. Supply Voltage VCC 1.7 1.8 1.9 V 4 Supply Voltage for DLL VCCL 1.7 1.8 1.9 V 4 Supply Voltage for Output VCCQ 1.7 1.8 1.9 V 4 Input Reference Voltage VREF 0.49*VCCQ 0.50*VCCQ 0.51*VCCQ V 1, 2 Termination Voltage VTT VREF-0.04 VREF VREF+0.04 V 3 There is no specific device VCC supply voltage requirement for SSTL-1.8 compliance. However under all conditions VCCQ must be less than or equal to VCC. 1. The value of VREF may be selected by the user to provide optimum noise margin in the system. Typically the value of VREF is expected to be about 0.5 x VCCQ of the transmitting device and VREF is expected to track variations in VCCQ. 2. Peak to peak AC noise on VREF may not exceed ±2% VREF(DC). 3. VTT of transmitting device must track VREF of receiving device. 4. VCC, VCCQ and VCCL are tied together on this module. ABSOLUTE MAXIMUM RATINGS SSTL_1.8V Symbol Parameter Rating Units Notes VCC Voltage on VCC pin relative to VSS - 1.0 V - 2.3 V V 5 VCCQ Voltage on VCCQ pin relative to VSS - 0.5 V - 2.3 V V 5 VCCL Voltage on VCCL pin relative to VSS - 0.5 V - 2.3 V V 5 VIN, VOUT Voltage on any pin relative to VSS - 0.5 V - 2.3 V V 5 TSTG Storage Temperature -55 to +100 C 5, 6 5. 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. 6. Storage Temperature is the case surface temperature on the center/top side of the DRAM. For the measurement conditions, please refer to JESD51-2 standard. CAPACITANCE TA = 25°C, f = VREF = Gnd, f = 100MHz, VCC = VCCQ = 1.8V Parameter Symbol Max Units Input Capacitance: CK, CK# CCK 5.6 pF Input Capacitance: CKE, CS# CI1 12.4 pF Input Capacitance: Addr. RAS#, CAS#, WE#, ODT CI2 12.4 pF Input/Output Capacitance: DQ, DQS, DM, DQS#, CB CIO 15.6 pF |
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