DDR SDRAM
512MB, 1GB, 2GB TSOP Registered DIMM
Revison 1.0 December, 2003
Note :
1. VID is the magnitude of the difference between the input level on CK and the input on CK.
2. The value of V
IX
is expected to equal 0.5*V
DDQ
of the transmitting device and must track variations in the DC level of the same.
3. These parameters should be tested at the pim on actual components and may be checked at either the pin or the pad in
simulation. the AC and DC input specificatims are refation to a Vref envelope that has been bandwidth limited 20MHz.
Output Load Circuit (SSTL_2)
Output
Z0=50
C
LOAD
=30pF
=0.5*V
DDQ
R
T
=50
V
tt
=0.5*V
DDQ
Input/Output Capacitance
(VDD=2.5V, VDDQ=2.5V, TA= 25
C, f=1MHz)
Parameter
Symbol
M383(12)L6523BTS, M383(12)L2920BTS
Unit
Min
Max
Input capacitance(A0 ~ A12, BA0 ~ BA1,RAS,CAS,WE )
CIN1
9
11
pF
Input capacitance(CKE0)
CIN2
9
11
pF
Input capacitance( CS0)
CIN3
9
11
pF
Input capacitance( CLK0, CLK0 )
CIN4
11
12
pF
Input capacitance(DM0~DM8)
CIN5
10
11
pF
Data & DQS input/output capacitance(DQ0~DQ63)
Cout1
10
11
pF
Data input/output capacitance (CB0~CB7)
Cout2
10
11
pF
Parameter
Symbol
M383(12)L2923BTS, M383(12)L5628BT1(0)
Unit
Min
Max
Input capacitance(A0 ~ A12, BA0 ~ BA1,RAS,CAS,WE )
CIN1
9
11
pF
Input capacitance(CKE0,CKE1)
CIN2
9
11
pF
Input capacitance( CS0, CS1)
CIN3
9
11
pF
Input capacitance( CLK0, CLK0 )
CIN4
11
12
pF
Input capacitance(DM0~DM8)
CIN5
14
16
pF
Data & DQS input/output capacitance(DQ0~DQ63)
Cout1
14
16
pF
Data input/output capacitance (CB0~CB7)
Cout2
14
16
pF
AC Operating Conditions
Parameter/Condition
Symbol
Min
Max
Unit
Note
Input High (Logic 1) Voltage, DQ, DQS and DM signals
VIH(AC)
VREF + 0.31
V
3
Input Low (Logic 0) Voltage, DQ, DQS and DM signals.
VIL(AC)
VREF - 0.31
V
3
Input Differential Voltage, CK and CK inputs
VID(AC)
0.7
VDDQ+0.6
V
1
Input Crossing Point Voltage, CK and CK inputs
VIX(AC)
0.5*VDDQ-0.2
0.5*VDDQ+0.2
V
2
V
REF