MD51V65405-50 OKI [OKI electronic componets], MD51V65405-50 Datasheet - Page 8

• Manufacturer Part Number: MD51V65405-50
• Description: 16,777,216-Word x 4-Bit DYNAMIC RAM : FAST PAGE MODE TYPE WITH EDO
• Manufacturer: OKI [OKI electronic componets]

¡ Semiconductor
Notes:
10. t
11. These parameters are referenced to the CAS leading edge in an early write cycle, and
1. A start-up delay of 200 s is required after power-up, followed by a minimum of eight
2. The AC characteristics assume t
3. V
4. This parameter is measured with a load circuit equivalent to 1 TTL load and 100 pF.
5. Operation within the t
6. Operation within the t
7. t
8. t
9. t
initialization cycles (RAS-only refresh or CAS before RAS refresh) before proper device
operation is achieved.
Transition times (t
The output timing reference levels are V
t
t
t
t
output achieves the open circuit condition and are not referenced to output voltage
levels.
included in the data sheet as electrical characteristics only. If t
the cycle is an early write cycle and the data out will remain open circuit (high
impedance) throughout the entire cycle. If t
t
cycle and data out will contain data read from the selected cell; if neither of the above
sets of conditions is satisfied, then the condition of the data out (at access time) is
indeterminate.
to the WE leading edge in an OE control write cycle, or a read modify write cycle.
RCD
RCD
RAD
RAD
CEZ
CEZ
RCH
WCS
AWD
IH
(Min.) and V
, t
(Max.), t
(Max.) is specified as a reference point only. If t
and t
(Max.) is specified as a reference point only. If t
(Max.) limit, then the access time is controlled by t
(Max.) limit, then the access time is controlled by t
or t
CWD
t
AWD
RRH
REZ
, t
RWD
(Min.) and t
REZ
must be satisfied for a read cycle.
must be satisfied for open circuit condition.
, t
IL
(Max.), t
AWD
T
(Max.) are reference levels for measuring input timing signals.
) are measured between V
RCD
RAD
and t
CPWD
WEZ
(Max.) limit ensures that t
(Max.) limit ensures that t
CPWD
(Max.) and t
t
T
CPWD
= 2 ns.
are not restrictive operating parameters. They are
(Min.), then the cycle is a read modify write
OH
OEZ
CWD
= 2.0 V and V
IH
(Max.) define the time at which the
t
and V
CWD
RCD
RAD
RAC
RAC
(Min.) , t
is greater than the specified
is greater than the specified
IL
CAC
AA
.
(Max.) can be met.
(Max.) can be met.
OL
WCS
.
.
= 0.8 V.
RWD
t
WCS
MD51V65405
t
RWD
(Min.), then
(Min.),
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