HMT451S6MMP8C-S6 Datasheet, PDF (8/40 Pages) Hynix Semiconductor – 204pin DDR3 SDRAM SODIMM

HMT451S6MMP(R)8C
Symbol
V_DD,V_DDSPD,
V_SS,
V_REFDQ,
V_REFCA
Type
Supply
Supply
Polarity
Function
Power supplies for core, I/O, Serial Presence Detect, Temp sensor, and ground for
the module.
Reference voltage for SSTL15 inputs.
SDA
In/Out
SCL
SA[1:0]
Input
Input
This is a bidirectional pin used to transfer data into or out of the SPD EEPROM and
Temp sensor. A resistor must be connected from the SDA bus line to VDDSPD on the
system planar to act as a pull up.
This signal is used to clock data into and out of the SPD EEPROM and Temp sensor.
Address pins used to select the Serial Presence Detect and Temp sensor base
address.
TEST
In/Out
The TEST pin is reserved for bus analysis tools and is not connected on normal
memory modules (SO-DIMMs).
EVENT
RESET
Wire OR
Out
In
Active Low
Active Low
The EVENT pin is reserved for use to flag critical module temperature. A resistor
may be connected from EVENT bus line to VDDSPD on the system planar to act as a
pullup.
This signal resets the DDR3 SDRAM
Rev. 0.2 / Apr. 2009
8