DS1248 Maxim, DS1248 Datasheet - Page 10

• Manufacturer Part Number: DS1248
• Description: The DS1248 1024K NV SRAM with Phantom Clock is a fully static nonvolatile RAM (organized as 128K words by 8 bits) with a built-in real-time clock
• Manufacturer: Maxim

DC ELECTRICAL CHARACTERISTICS
Over the Operating Range (3.3V)
Input Leakage Current
I/O Leakage Current
CE ≥ V
Output Current at 2.4V
Output Current at 0.4V
Standby Current CE = 2.2V
Standby Current
CE = V
Operating Current t
Write Protection Voltage
Battery Switchover Voltage
CAPACITANCE
(T
Input Capacitance
Input/Output Capacitance
MEMORY AC ELECTRICAL CHARACTERISTICS
Over the Operating Range (5V)
Read Cycle Time
Access Time
OE to Output Valid
CE to Output Valid
OE or CE to Output Active
Output High-Z from Deselection
Output Hold from Address Change
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High-Z from WE
Output Active from WE
Data Setup Time
Data Hold Time from WE
A
= +25°C)
PARAMETER
PARAMETER
IH
CC
≤ V
- 0.5V
PARAMETER
CC
CYC
= 70ns
SYMBOL
SYMBOL
I
I
I
V
C
V
C
I
CCS1
CCS2
I
CC01
I
I
OH
OL
IO
IL
I/O
SO
IN
PF
SYMBOL
t
t
t
t
t
t
t
t
t
t
ODW
t
t
t
t
OEW
t
ACC
COE
WC
AW
WR
WP
RC
OE
CO
OD
OH
DH
DS
MIN
MIN
2.80
10 of 19
-1.0
-1.0
-1.0
2.0
MIN
70
70
50
30
5
5
0
0
5
5
DS1248Y-70
V
TYP
TYP
2.86
BAT
V
2.0
5
5
5
PF
or
MAX
70
35
70
25
25
MAX
MAX
+1.0
+1.0
2.97
3.0
50
10
10
7
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNITS
UNITS
mA
mA
mA
mA
mA
pF
pF
µA
µA
V
V
NOTES
NOTES
NOTES
5
5
3
5
5
4
4
12
11
11