Datasheet

T
T
T
S
S
S
2
2
2
M
M
M
3
3
3
6
6
6
6
6
6
0
0
0
G
G
G

8MB 72 PIN FAST PAGE
DRAM SIMM With 1Mx16 5VOLT


Transcend Information Inc.



NOTES
1. An initial pause of 200us is required after power-up followed by any 8 /RAS-only or
/CAS-before-/RAS refresh cycles before proper device operation is achieved.
2. Input voltage levels are V
IH
/V
IL.
V
IH
(min) and V
IL
(max) are reference levels for measuring timing of
input signals. Transition times are measured between V
IH
(min) and V
IL
(max) and are assumed to be
5ns for all inputs.
3. Measured with a load equivalent to 2 TTL loads and 100pF.
4. Operation within the t
RCD
(max) limit insures that t
RAC
(max) can be met. t
RCD
(max) is specified as a
reference point only. If t
RCD
is greater than the specified t
RCD
(max) limit, then access time is
controlled exclusively by t
CAC.
5. Assumes that t
RCD
t
RCD
(max).
6. This parameter defines the time at which the output achieves the open circuit condition and is not
referenced to V
OH
or V
OL..
7. t
WCS
is non-restrictive operating parameter. It is included in the data sheet as electrical
characteristics only. If t
WCS
t
WCS
(min), the cycle is an early write cycle and the data out pin will
remain high impedance for the duration of the cycle.
8. Either t
RCH
or t
RRH
must be satisfied for a read cycle.
9. These parameters are referenced to the /CAS leading edge in early write cycle.
10. Operation within the t
RAD
(max) limit insures that t
RAC
(max) can be met. t
RAD
(max) is specified as
reference point only. If t
RAD
is greater than the specified t
RAD
(max) limit, then access time is
controlled by t
AA.