DS_K7B803625B Datasheet, PDF (8/19 Pages) Samsung semiconductor – 256Kx36 & 512Kx18-Bit Synchronous Burst SRAM

K7B803625B
K7B801825B
256Kx36 & 512Kx18 Synchronous SRAM
ASYNCHRONOUS TRUTH TABLE
Operation
Sleep Mode
Read
Write
Deselected
ZZ OE I/O STATUS
H
X
High-Z
L
L
DQ
L
H
High-Z
L
X Din, High-Z
L
X
High-Z
Notes
1. X means "Don′t Care".
2. ZZ pin is pulled down internally
3. For write cycles that following read cycles, the output buffers must be
disabled with OE, otherwise data bus contention will occur.
4. Sleep Mode means power down state of which stand-by current does
not depend on cycle time.
5. Deselected means power down state of which stand-by current
depends on cycle time.
ABSOLUTE MAXIMUM RATINGS*
PARAMETER
Voltage on VDD Supply Relative to VSS
Voltage on VDDQ Supply Relative to VSS
Voltage on Input Pin Relative to VSS
Voltage on I/O Pin Relative to VSS
Power Dissipation
Storage Temperature
Operating Temperature
Storage Temperature Range Under Bias
Commercial
Industrial
SYMBOL
VDD
VDDQ
VIN
VIO
PD
TSTG
TOPR
TOPR
TBIAS
RATING
-0.3 to 4.6
VDD
-0.3 to VDD+0.3
-0.3 to VDDQ+0.3
1.6
-65 to 150
0 to 70
-40 to 85
-10 to 85
UNIT
V
V
V
V
W
°C
°C
°C
°C
*Note : Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
OPERATING CONDITIONS at 3.3V I/O(0°C ≤ TA ≤ 70°C)
PARAMETER
SYMBOL
MIN
Typ.
Supply Voltage
VDD
3.135
3.3
VDDQ
3.135
3.3
Ground
VSS
0
0
* The above parameters are also guaranteed at industrial temperature range.
OPERATING CONDITIONS at 2.5V I/O(0°C ≤ TA ≤ 70°C)
PARAMETER
SYMBOL
MIN
Typ.
Supply Voltage
VDD
3.135
3.3
VDDQ
2.375
2.5
Ground
VSS
0
0
* The above parameters are also guaranteed at industrial temperature range.
CAPACITANCE*(TA=25°C, f=1MHz)
PARAMETER
Input Capacitance
Output Capacitance
SYMBOL
TEST CONDITION
MIN
CIN
VIN=0V
-
COUT
VOUT=0V
-
*Note : Sampled not 100% tested.
MAX
3.465
3.465
0
MAX
3.465
2.9
0
MAX
5
7
UNIT
V
V
V
UNIT
V
V
V
UNIT
pF
pF
-8-
Nov. 2003
Rev 3.0