W3HG128M64EEU-D4 Datasheet, PDF (4/14 Pages) White Electronic Designs Corporation – 1GB - 128Mx64 DDR2 SDRAM UNBUFFERED, SO-DIMM

White Electronic Designs
W3HG128M64EEU-D4
ADVANCED
ABSOLUTE MAXIMUM DC CHARACTERISTICS
Symbol Parameter
Min
Max
VCC VCC Supply Voltage Relative to VSS
-0.5
2.3
VIN, VOUT Voltage on any Pin Relative to VSS
-0.5
2.3
TSTG Storage Temperature
-55
100
TCASE DDR2 SDRAM Device Operating Temperature*
0
85
TOPR Operating Temperature (Ambient)
0
65
II
Input Leakage Current; Any input 0V ≤ VIN ≤ VCC; Command/Address,
-40
40
VREF input 0V ≤ VIN ≤0.95V; (All other pins not under RAS#, CAS#, WE# S#,
test = 0V)
CKE
CK, CK#
-20
20
DM
-5
5
IOZ Output Leakage Current; 0V ≤ VOUT ≤ VCCQ; DQs DQ, DQS, DQS#
-5
5
and ODT are disabled
IVREF VREF Leakage Current; VREF = Valid VREF level
-16
16
* TCASE specifies as the temperature at the top center of the memory devices.
Units
V
V
°C
°C
°C
µA
µA
µA
RECOMMENDED DC OPERATING CONDITIONS
All voltages referenced to VSS
Parameter
Supply Voltage
I/O Reference Voltage
I/O Termination Voltage (system)
Symbol
VCC
VREF
VTT
Min
1.7
0.49 x VCC
VREF - 40
Max
1.9
0.51 x VCC
VREF + 40
Units
V
V
mV
Notes
-
1
2
NOTE:
1. VREF is expected to equal VCCQ/2 of the transmitting device and to track variations in the DC level of the same. Peak-to-peak noise (non-common mode) on VREF may not exceed
±1 percent of the DC value. Peak-to-peak AC noise on VREF may not exceed ±2 percent of VREF (DC). This measurement is to be taken at the nearest VREF bypass capacitor.
2. VTT is not applied directly to the device. VTT is a system supply for signal termination resistors, is expected to be set equal
to VREF and must track variations in the DC level of VREF.
CAPACITANCE
TA = 25°C, f = 100MHz, VCC = 1.8V, VREF = VSS
Parameter
Symbol
Max
Unit
Input Capacitance (A0-A12)
CIN1
35
pF
Input Capacitance (RAS#,CAS#,WE#)
CIN2
35
pF
Input Capacitance (CKE0)
CIN3
31
pF
Input Capacitance (CK0, CK0#)
CIN4
15
pF
Input Capacitance (CS0#)
CIN5
31
pF
Input Capacitance (DQS0#-DQS17#)
CIN6
6
pF
Input Capacitance (BA0-BA1)
CIN7
35
pF
Data input/output Capacitance (DQ0-DQ63)
COUT
6
pF
NOTE:
* These capacitance values are based on worst case component values in conjunction with the circuit boards associated parasitic net capacitance.
March 2006
Rev. 0
4
White Electronic Designs Corporation • [phone] • www.wedc.com