m48t212a STMicroelectronics, m48t212a Datasheet - Page 3

• Manufacturer Part Number: m48t212a
• Description: 3.3v Timekeeper Controller
• Manufacturer: STMicroelectronics

Table 2. Absolute Maximum Ratings
Note: 1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress
Table 3. Operating Modes
Note: 1. X = V
Table 4. Truth Table for SRAM Bank Select
Note: 1. X = V
Symbol
Deselect
Deselect
Deselect
Deselect
Deselect
Deselect
T
Select
CAUTION: Negative undershoots below –0.3V are not allowed on any pin while in the Battery Back-up mode.
Mode
Mode
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).
2. V
2. V
SLD
Read
Read
Write
V
V
P
T
STG
I
CC
O
IO
A
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.
D
SO
SO
(2)
= Battery Back-up Switchover Voltage. (See Table 7 for details).
= Battery Back-up Switchover Voltage. (See Table 7 for details).
IH
IH
or V
or V
Ambient Operating Temperature
Storage Temperature (V
Lead Solder Temperature for 10 sec
Input or Output Voltages
Supply Voltage
Output Current
Power Dissipation
IL
IL
.
.
V
V
SO
SO
3.0V to 3.6V
3.0V to 3.6V
to V
to V
V
V
V
V
PFD
PFD
SO
SO
CC
CC
(1)
(2)
(2)
(min)
(min)
(2)
(2)
CC
Parameter
Off, Oscillator Off)
(1)
High
Low
Low
V
V
V
V
EX
E
X
X
X
X
IH
IL
IL
IL
(1)
High
Low
V
V
G
X
X
X
X
A
X
X
X
IH
IL
E1
High
High
High
High
Low
V
V
V
W
X
X
X
CON
IH
IH
IL
DQ7-DQ0
High-Z
High-Z
High-Z
High-Z
E2
D
High
High
High
High
Low
D
OUT
CON
IN
–55 to 125
–0.3 to 4.6
–0.3 to 4.6
0 to 70
Value
260
20
1
Battery Back-Up
Battery Back-Up
CMOS Standby
CMOS Standby
Standby
Standby
Power
Power
M48T212A
Active
Active
Active
Active
Active
Unit
mA
°C
°C
°C
W
V
V
3/20