HYB25D256[400/800/160]B[T/C](L)
256-Mbit Double Data Rate SDRAM
Electrical Characteristics
4
Electrical Characteristics
4.1
Operating Conditions
Table 12
Absolute Maximum Ratings
Parameter
Symbol
Values
Unit Note/ Test Condition
min. typ. max.
Voltage on I/O pins relative to VSS
Voltage on inputs relative to VSS
Voltage on VDD supply relative to VSS
Voltage on VDDQ supply relative to VSS
Operating temperature (ambient)
Storage temperature (plastic)
VIN, VOUT –0.5 —
V
DDQ+0.5 V
—
—
—
—
—
—
—
—
VIN
–1.0 —
–1.0 —
–1.0 —
+3.6
+3.6
+3.6
+70
+150
—
V
VDD
VDDQ
TA
V
V
0
—
°C
°C
W
mA
TSTG
PD
-55
—
—
—
Power dissipation (per SDRAM component)
Short circuit output current
1.5
50
IOUT
—
Attention: Permanent damage to the device may occur if “Absolute Maximum Ratings” are exceeded. This
is a stress rating only, and functional operation should be restricted to recommended operation
conditions. Exposure to absolute maximum rating conditions for extended periods of time may
affect device reliability and exceeding only one of the values may cause irreversible damage to
the integrated circuit.
Table 13
Input and Output Capacitances
Symbol
Parameter
Values
Typ.
—
Unit
Note/
Test Condition
Min.
1.5
2.0
—
Max.
2.5
Input Capacitance: CK, CK
Delta Input Capacitance
CI1
pF
pF
pF
pF
pF
pF
TSOPII 1)
TFBGA 1)
—
3.0
1)
CdI1
CI2
—
0.25
2.5
Input Capacitance:
All other input-only pins
1.5
2.0
—
—
TFBGA 1)
TSOPII 1)
—
3.0
1)
Delta Input Capacitance:
All other input-only pins
CdIO
—
0.5
TFBGA 1)2)
Input/Output Capacitance: DQ, DQS, DM CIO
3.5
4.0
—
—
—
—
4.5
5.0
0.5
pF
pF
pF
TSOPII 1)2)
1)
Delta Input/Output Capacitance:
DQ, DQS, DM
CdIO
1) These values are guaranteed by design and are tested on a sample base only. VDDQ = VDD = 2.5 V ± 0.2 V, f = 100 MHz,
TA = 25 °C, VOUT(DC) = VDDQ/2, VOUT (Peak to Peak) 0.2 V. Unused pins are tied to ground.
2) DM inputs are grouped with I/O pins reflecting the fact that they are matched in loading to DQ and DQS to facilitate trace
matching at the board level.
Data Sheet
54
Rev. 1.21, 2004-07
02102004-TSR1-4ZWW
QIMONDA [ QIMONDA AG ]
