Data retention characteristics, Data retention waveform, Ordering information – Rainbow Electronics W24256 User Manual
Page 7
Preliminary W24256
Publication Release Date: October 1999
- 7 -
Revision A1
DATA RETENTION CHARACTERISTICS
(T
A
= 0
°
C to 70
°
C)
PARAMETER SYM.
TEST CONDITIONS
MIN.
TYP. MAX. UNIT
V
DD
for Data Retention
V
DR
CS
≥
V
DD
-0.2V
2.0 - 5.5 V
Data Retention Current
I
DDDR
CS
≥
V
DD
-0.2V, V
DD
= 3V
- - 20
µ
A
Chip Deselect to Data
Retention Time
T
CDR
See data retention waveform
0
-
-
nS
Operation Recovery Time
T
R
T
RC
* - - nS
*
Read Cycle Time
DATA RETENTION WAVEFORM
T
CDR
V
DD
V
IH
T
R
V
IH
CS
V
DR
2V
=
>
- 0.2V
DD
V
CS =
>
0.9
DD
V
0.9
DD
V
ORDERING INFORMATION
PART NO.
ACCESS
TIME
(nS)
OPERATING
CURRENT MAX.
(
mA
)
STANDBY
CURRENT MAX.
(
µ
A
)
PACKAGE
W24256-70L
70
60
100
600 mil DIP
W24256-70LL
70
60
50
600 mil DIP
W24256S-70L 70
60
100
330 mil SOP
W24256S-70LL 70
60
50 330
mil
SOP
W24256Q-70L 70
60
100
Standard type one TSOP
W24256Q-70LL
70
60
50
Standard type one TSOP
Notes:
1. Winbond reserves the right to make changes to its products without prior notice.
2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in applications
where personal injury might occur as a consequence of product failure.