U62256 Datasheet, PDF (2/9 Pages) List of Unclassifed Manufacturers – STANDARD 32K X 8 SRAM

U62256
Block Diagram A6
A7
A8
A9
A10
A11
A12
A13
A14
Memory Cell
Array
512 Rows x
64 x 8 Columns
A0
A1
A2
A3
A4
A5
Address
Change
Detector
Sense Amplifier/
Write Control Logic
Clock
Generator
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
Truth Table
Operating Mode
V_CC V_SS
EWG
E
W
G
DQ0 - DQ7
Standby/not selected
H
*
*
Internal Read
L
H
H
High-Z
High-Z
Read
L
H
L
Data Outputs Low-Z
Write
L
L
*
Data Inputs High-Z
* ^{H or L}
Characteristics
All voltages are referenced to V_SS = 0 V (ground).
All characteristics are valid in the power supply voltage range and in the operating temperature range specified.
Dynamic measurements are based on a rise and fall time of ≤ 5 ns, measured between 10 % and 90 % of V_I, as well as
input levels of V_IL = 0 V and V_IH = 3 V. The timing reference level of all input and output signals is 1.5 V,
with the exception of the t_dis-times and t_en-times, in which cases transition is measured ±200 mV from steady-state voltage.
Maximum Ratings ^a
Symbol
Min.
Max.
Unit
Power Supply Voltage
V_CC
Input Voltage
V_I
Output Voltage
V_O
Power Dissipation
P_D
Operating Temperature
C-Type
T_a
K-Type
-0.5
7
V
-0.5
V_CC + 0.5 ^b
V
-0.5
V_CC + 0.5 ^b
V
-
1
W
0
70
°C
-40
85
Storage Temperature
T_stg
-65
125
°C
Output Short-Circuit Current
at V_CC = 5 V and V_O = 0 V ^c
| I_OS |
200
mA
a _{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 condition above those indicated in the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect reliability
b _{Maximum voltage is 7 V}
c _{Not more than 1 output should be shorted at the same time. Duration of the short circuit should not exceed 30 s.}
2
November 01, 2001