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HMT125R7BFR4A-G7 Datasheet(PDF) 7 Page - Hynix Semiconductor |
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HMT125R7BFR4A-G7 Datasheet(HTML) 7 Page - Hynix Semiconductor |
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7 / 69 page  Rev. 0.1 / Nov. 2009 7 DQS[17:0] I/O Positive Edge Positive line of the differential data strobe for input and output data. DQS[17:0] I/O Negative Edge Negative line of the differential data strobe for input and output data. TDQS[17:9] TDQS[17:9] OUT TDQS/TDQS is applicable for X8 DRAMs only. When enabled via Mode Register A11=1 in MR1,DRAM will enable the same termination resistance function on TDQS/TDQS that is applied to DQS/DQS. When disabled via mode register A11=0 in MR1, DM/TDQS will provide the data mask function and TDQS is not used. X4/X16 DRAMs must disable the TDQS function via mode register A11=0 in MR1 SA[2:0] IN — These signals are tied at the system planar to either VSS or VDDSPD to configure the serial SPD EEPROM address range. SDA I/O — This bidirectional pin is used to transfer data into or out of the SPD EEPROM. A resistor must be connected from the SDA bus line to VDDSPD on the system planar to act as a pullup. SCL IN — This signal is used to clock data into and out of the SPD EEPROM. A resistor may be con- nected from the SCL bus time to VDDSPD on the system planar to act as a pullup. EVENT OUT (open drain) Active Low This signal indicates that a thermal event has been detected in the thermal sensing device.The system should guarantee the electrical level requirement is met for the EVENT pin on TS/SPD part. No pull-up resister is provided on DIMM. VDDSPD Supply Serial EEPROM positive power supply wired to a separate power pin at the connector which supports from 3.0 Volt to 3.6 Volt (nominal 3.3V) operation. RESET IN The RESET pin is connected to the RESET pin on the register and to the RESET pin on the DRAM. Par_In IN Parity bit for the Address and Control bus. (“1 “: Odd, “0 “: Even) Err_Out OUT (open drain) Parity error detected on the Address and Control bus. A resistor may be connected from Err_Out bus line to VDD on the system planar to act as a pull up. TEST Used by memory bus analysis tools (unused (NC) on memory DIMMs) Symbol Type Polarity Function |
Similar Part No. - HMT125R7BFR4A-G7 |
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Similar Description - HMT125R7BFR4A-G7 |
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