NT5DS32M4AT
NT5DS16M8AT
128Mb Double Data Rate SDRAM
Capacitance
Parameter
Input Capacitance: CK, CK
Symbol
Min.
2.0
Max.
3.0
Units
pF
Notes
CI
1
1
1
Delta Input Capacitance: CK, CK
delta CI
0.25
pF
1
Input Capacitance: All other input-only pins (except DM)
Delta Input Capacitance: All other input-only pins (except DM)
Input/Output Capacitance: DQ, DQS, DM
CI
2.0
4.0
2.0
3.0
0.5
5.0
0.5
4.0
pF
pF
pF
pF
pF
1
1
2
delta CI
2
C
1, 2
1
IO
Delta Input/Output Capacitance: DQ, DQS, DM
Output Capacitance: QFC
delta C
IO
CO
1
1
1. V
= V
= 2.5V ± 0.2V (minimum range to maximum range), f = 100MHz, T = 25°C, VO
= V
, VO
=0.2V.
Peak -Peak
DDQ
DD
A
DC
DDQ/2
2. Although DM is an input-only pin, the input capacitance of this pin must model the input capacitance of the DQ and DQS pins. This is
required to match input propagation times of DQ, DQS and DM in the system.
DC Electrical Characteristics and Operating Conditions
(0°C £ TA £ 70°C; VDDQ = 2.5V ± 0.2V, VDD = + 2.5V ± 0.2V, see AC Characteristics)
Symbol
Parameter
Min
2.3
2.3
Max
2.7
Units
Notes
V
Supply Voltage
V
V
1
1
DD
V
I/O Supply Voltage
2.7
DDQ
Supply Voltage
I/O Supply Voltage
V
, V
0
0
V
SS
SSQ
V
I/O Reference Voltage
0.49 x V
0.51 x V
DDQ
V
V
V
V
V
V
1, 2
1, 3
1
REF
DDQ
V
I/O Termination Voltage (System)
V
V
- 0.04
+ 0.15
V
+ 0.04
+ 0.3
TT
REF
REF
REF
V
V
V
V
Input High (Logic1) Voltage
V
IH(DC)
IL(DC)
IN(DC)
ID(DC)
DDQ
Input Low (Logic0) Voltage
- 0.3
V
- 0.15
1
REF
Input Voltage Level, CK and CK Inputs
Input Differential Voltage, CK and CK Inputs
V-I Matching Pullup Current to Pulldown Current Ratio
- 0.3
0.30
0.71
V
+ 0.3
+ 0.6
1
DDQ
DDQ
V
1, 4
5
VI
1.4
Ratio
Input Leakage Current
I
- 5
- 5
5
5
mA
mA
1
1
I
Any input 0V £ V £ V ; (All other pins not under test = 0V)
IN
DD
Output Leakage Current
(DQs are disabled; 0V £ V
I
OZ
£ V
DDQ
out
I
I
Output Current: Nominal Strength Driver
- 16.8
OH
OL
High current (V
Low current (V
= V
-0.373V, min V
, min V )
TT
mA
1
OUT
DDQ
REF
16.8
= 0.373V, max V
, max V
REF
)
OUT
TT
1. Inputs are not recognized as valid until V
stabilizes.
REF
2.
V
is expected to be equal to 0.5 V
of the transmitting device, and to track variations in the DC level of the same. Peak-to-peak
DDQ
REF
noise on V
may not exceed ± 2% of the DC value.
REF
3.
4.
V
is not applied directly to the device. V is a system supply for signal termination resistors, is expected to be set equal to V
, and
TT
TT
REF
must track variations in the DC level of V
.
REF
V
is the magnitude of the difference between the input level on CK and the input level on CK
ID
5. The ratio of the pullup current to the pulldown current is specified for the same temperature and voltage, over the entire tempera-ture and
voltage range, for device drain to source voltages for 0.25 volts to 1.0 volts. For a given output, it represents the maximum difference
between pullup and pulldown drivers due to process variation.
51
REV 1.0
May, 2001
©
NANYA TECHNOLOGY CORP. All rights reserved.
NANYA TECHNOLOGY CORP. reserves the right to change Products and Specifications without notice.
ETC [ ETC ]
