HYB25D256400B Datasheet, PDF (54/83 Pages) Infineon Technologies AG – 256 Mbit Double Data Rate SDRAM

HYB25D256[400/800/160]B[T/C](L)
256-Mbit Double Data Rate SDRAM
Electrical Characteristics
4
Electrical Characteristics
4.1
Operating Conditions
Table 11 Absolute Maximum Ratings
Parameter
Voltage on I/O pins relative to V_SS
Voltage on inputs relative to V_SS
Voltage on V_DD supply relative to V_SS
Voltage on V_DDQ supply relative to V_SS
Operating temperature (ambient)
Storage temperature (plastic)
Power dissipation (per SDRAM component)
Short circuit output current
Symbol
Values
Unit Note/ Test Condition
min. typ. max.
V_IN, V_OUT –0.5 – V_DDQ+0.5 V –
V_IN
–1 – +3.6
V–
V_DD
–1 – +3.6
V–
V_DDQ
–1 – +3.6
V–
T_A
0 – +70
°C –
T_STG
-55 – +150
°C –
P_D
– 1.5 –
W–
I_OUT
– 50 –
mA –
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 12 Input and Output Capacitances
Parameter
Symbol
Input Capacitance: CK, CK
C_I1
Delta Input Capacitance
C_dI1
Input Capacitance:
C_I2
All other input-only pins
Delta Input Capacitance:
C_dIO
All other input-only pins
Input/Output Capacitance: DQ, DQS, DM C_IO
Delta Input/Output Capacitance:
C_dIO
DQ, DQS, DM
Min.
1.5
2.0
—
1.5
2.0
—
3.5
4.0
—
Values
Unit
Typ. Max.
—
2.5
pF
—
3.0
pF
—
0.25 pF
—
2.5
pF
—
3.0
pF
—
0.5
pF
—
4.5
pF
—
5.0
pF
—
0.5
pF
Note/
Test Condition
TSOPII ¹⁾
TFBGA ¹⁾
1)
TFBGA ¹⁾
TSOPII ¹⁾
1)
TFBGA ¹⁾²⁾
TSOPII ¹⁾²⁾
1)
1) These values are guaranteed by design and are tested on a sample base only. V_DDQ = V_DD = 2.5 V ± 0.2 V, f = 100 MHz,
T_A = 25 °C, V_OUT(DC) = V_DDQ/2, V_OUT (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. 1.2, 2004-02
02102004-TSR1-4ZWW