M48T08 ST Microelectronics, M48T08 Datasheet - Page 2

• Manufacturer Part Number: M48T08
• Description: 64 Kbit 8Kb x 8 TIMEKEEPER SRAM
• Manufacturer: ST Microelectronics

M48T08, M48T18
Figure 2A. DIP Pin Connections
Table 2. Absolute Maximum Ratings
Notes: 1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a
Table 3. Operating Modes
Notes: 1. X = V
2/19
Deselect
Deselect
Write
Read
Read
Deselect
Deselect
Mode
Symbol
T
2. Soldering temperature not to exceed 260 C for 10 seconds (total thermal budget not to exceed 150 C for longer than 30 seconds).
CAUTION: Negative undershoots below –0.3 volts are not allowed on any pin while in the Battery Back-up mode.
CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.
T
SLD
V
V
P
T
STG
I
stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to the absolute maximum rating conditions for extended periods of time may
affect reliability.
CC
O
IO
A
D
(2)
DQ0
DQ1
DQ2
V SS
A12
INT
IH
A7
A6
A5
A4
A3
A2
A1
A0
V
or V
SO
4.75V to 5.5V
4.5V to 5.5V
IL
1
2
3
4
5
6
7
8
9
10
11
12
13
14
to V
; V
Ambient Operating Temperature
Storage Temperature (V
Lead Solder Temperature for 10 seconds
Input or Output Voltages
Supply Voltage
Output Current
Power Dissipation
V
SO
or
V
CC
PFD
M48T08
M48T18
SO
= Battery Back-up Switchover Voltage.
(min)
AI01182
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V
E1
V
V
V
V CC
W
E2
A8
A9
A11
G
A10
E1
DQ7
DQ6
DQ5
DQ4
DQ3
X
X
X
IH
Parameter
IL
IL
IL
CC
(1)
Off, Oscillator Off)
V
V
V
E2
V
X
X
X
IL
IH
IH
IH
V
V
Figure 2B. SOIC Pin Connections
G
X
X
X
X
X
IH
IL
DQ0
DQ1
DQ2
V SS
A12
INT
V
V
V
W
X
X
X
X
A7
A6
A5
A4
A3
A2
A1
A0
IH
IH
IL
DQ0-DQ7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
–0.3 to 7
–0.3 to 7
–40 to 85
High Z
High Z
High Z
High Z
High Z
D
D
0 to 70
Value
OUT
M48T18
IN
260
20
1
AI01021B
Battery Back-up Mode
28
27
26
25
24
23
22
21
20
19
18
17
16
15
CMOS Standby
Standby
Standby
Power
Active
Active
Active
V CC
W
E2
A8
A9
A11
G
A10
E1
DQ7
DQ6
DQ5
DQ4
DQ3
Unit
mA
W
V
V
C
C
C