MOSEL VITELIC
Data Retention Characteristics
Symbol
V
DR
I
CCDR
V61C518256
Parameter
V
CC
for Data Retention
Data Retention Current
V
DR
= 3.0V, CE
³
V
DR
– 0.2V
Chip Deselect to Data Retention Time
Operation Recovery Time (see Retention Waveform)
CE
³
V
CC
– 0.2V
Com’l
Ind.
Min.
2.0
—
—
0
t
RC(1)
Typ.
(2)
—
—
—
—
—
Max.
5.5
150
200
—
—
Units
V
m
A
t
CDR
t
R
ns
ns
NOTES:
1. t
RC
= Read Cycle Time
2. T
A
= +25
°
C.
Low V
CC
Data Retention Waveform
Data Retention Mode
V
CC
4.5V
t
CDR
CE
2.2V
V
DR
V
DR
³
2V
t
R
2.2V
518256-07
4.5V
AC Test Conditions
Input Pulse Levels
Input Rise and Fall Times
Timing Reference Levels
Output Load
0 to 3V
3 ns
1.5V
see below
Key to Switching Waveforms
WAVEFORM
INPUTS
MUST BE
STEADY
MAY CHANGE
FROM H TO L
OUTPUTS
WILL BE
STEADY
WILL BE
CHANGING
FROM H TO L
WILL BE
CHANGING
FROM L TO H
CHANGING:
STATE
UNKNOWN
CENTER
LINE IS HIGH
IMPEDANCE
“OFF” STATE
AC Test Loads and Waveforms
MAY CHANGE
FROM L TO H
+5V
480
�½
I/O Pin
255
�½
C
L
= 30 pF*
DOES NOT
APPLY
DON'T CARE:
ANY CHANGE
PERMITTED
* Includes scope and jig capacitance
+5V
480
�½
I/O Pin
255
�½
5 pF*
Output load for t
CLZ
, t
CHZ
, t
OHZ
, t
OLZ
, t
WZ
, t
OW
518256-06
V61C518256 Rev. 0.3 July 1998
5
MOSEL [ MOSEL VITELIC, CORP ]
