gvt71256f18 ETC-unknow, gvt71256f18 Datasheet - Page 8

• Manufacturer Part Number: gvt71256f18
• Description: 256k Synchronous Burst Sram
• Manufacturer: ETC-unknow

NOTES
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. This is a synchronous device. All synchronous inputs must meet
11. AC I/O curves are available upon request.
12. “Device Deselected” means the device is in POWER -DOWN
13. Typical values are measured at 3.3V, 25
14. MODE pin has an internal pull-up and ZZ pin has an internal
February 7, 1998
Rev. 2/7/98
GALVANTECH
Input pulse levels
Input slew rate
Output rise and fall times(max)
Input timing reference levels
Output reference levels
AC TEST CONDITIONS
pull-down. These two pins exhibit an input leakage current of
+30 A.
Undershoot:
All voltages referenced to VSS (GND).
Overshoot:
I
output loading and faster cycle times.
This parameter is sampled.
Test conditions as specified with the output loading as shown in
Fig. 1 unless otherwise noted.
Output loading is specified with CL=5pF as in Fig. 2.
At any given temperature and voltage condition,
than
A READ cycle is defined by byte write enables all HIGH or
ADSP# LOW along with chip enables being active for the
required setup and hold times. A WRITE cycle is defined by at
one byte or all byte WRITE per READ/WRITE TRUTH
TABLE.
OE# is a “don’t care” when a byte write enable is sampled LOW.
specified setup and hold time, except for “don’t care” as defined
in the truth table.
mode as defined in the truth table. “Device Selected” means the
device is active.
cc
is given with no output current. I
t
KQLZ and
t
V
V
OEHZ is less than
IH
IL
-2.0V for t
+6.0V for t
cc
t
OELZ.
t
KC /2
t
KC /2.
increases with greater
o
C and 8.5ns cycle time.
, INC.
0V to 2.5V
t
KQHZ is less
1.0V/ns
1.25V
1.25V
1.8ns
256K X 18 SYNCHRONOUS BURST SRAM
8
15. Capacitance derating applies to capacitance different from the
OUTPUT LOADS
load capacitance shown in Fig. 1.
Fig. 1 OUTPUT LOAD EQUIVALENT
DQ
Galvantech, Inc. reserves the right to change products or specifications without notice.
Z
0
= 50
Vt = 1.25V
GVT71256F18
50