Internet Data Sheet
HYS[64/72]T256020EU-[25F/2.5/3/3S/3.7]-B
Unbuffered DDR2 SDRAM Module
TABLE 6
Abbreviations for Pin Type
Abbreviation
Description
I
Standard input-only pin. Digital levels.
Output. Digital levels.
O
I/O
AI
I/O is a bidirectional input/output signal.
Input. Analog levels.
Power
PWR
GND
NC
Ground
Not Connected
TABLE 7
Abbreviations for Buffer Type
Abbreviation
Description
SSTL
Serial Stub Terminated Logic (SSTL_18)
Low Voltage CMOS
LV-CMOS
CMOS
OD
CMOS Levels
Open Drain. The corresponding pin has 2 operational states, active low and tri-state,
and allows multiple devices to share as a wire-OR.
Rev. 1.0, 2006-10
12
10262006-SX8C-DEY8
QIMONDA [ QIMONDA AG ]
