as7c31024-15tji ETC-unknow, as7c31024-15tji Datasheet - Page 6

• Manufacturer Part Number: as7c31024-15tji
• Description: 5v/3.3v 128k8 Cmos Sram Evolutionary Pinout
• Manufacturer: ETC-unknow

Data retention characteristics (over the operating range)
Data retention waveform
AC test conditions
Notes
1
2
3
4
5
6
7
8
9
10 CE1 or WE must be High or CE2 Low during address transitions. Either CE1 or WE asserting high terminates a write cycle.
11 All write cycle timings are referenced from the last valid address to the first transitioning address.
12 CE1 and CE2 have identical timing.
13 2V data retention applies to commercial temperature operating range only.
14 C=30pF, except all high Z and low Z parameters, C=5pF.
V
Data retention current
Chip deselect to data retention time
Operation recovery time
Input leakage current
AS7C1024
AS7C31024
CC
6
During V
This parameter is sampled and not 100% tested.
For test conditions, see AC Test Conditions, Figures A, B, and C.
t
This parameter is guaranteed, but not 100% tested.
WE is High for read cycle.
CE1 and OE are Low and CE2 is High for read cycle.
Address valid prior to or coincident with CE1 transition Low.
All read cycle timings are referenced from the last valid address to the first transitioning address.
CLZ
for data retention
CE1
V
– 5V output load: see Figure B or Figure C.
– Input pulse level: GND to 3.0V. See Figure A.
– Input rise and fall times: 2 ns. See Figure A.
– Input and output timing reference levels: 1.5V.
CC
and t
+3.0V
GND
CC
CHZ
power-up, a pull-up resistor to V
Parameter
are specified with CL = 5pF, as in Figure C. Transition is measured ±500mV from steady-state voltage.
10%
Figure A: Input pulse
90%
2 ns
90%
10%
ALLIANCE SEMICONDUCTOR
V
CC
V
Symbol
IH
ICCDR
| ILI |
CC
tCDR
VDR
on CE1 is required to meet I
tR
t
CDR
D
Figure B: 5V Output load
OUT
255W
CE1 V
V
IN
Test conditions
Data retention mode
V
CE2
V
CC
IN
V
V
CC
CC
= 2.0V
DR
–0.2V or
–0.2V or
0.2V
0.2V
SB
V
DR
+5V
480W
C(14)
GND
specification.
2.0V
®
AS7C31024
AS7C1024
Device
D
D
OUT
OUT
Thevenin equivalent:
Figure C: 3.3V Output load
255W
168W
V
V
CC
IH
Min
2.0
t
RC
0
–
–
–
t
R
+1.728V (5V and 3.3V)
+3.3V
320W
C(14)
GND
Max
–
5
1
–
–
1
Unit
11/29/00
mA
mA
µA
ns
ns
V