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M48Z58 Datasheet, PDF (2/17 Pages) STMicroelectronics – 64 Kbit 8Kb x 8 ZEROPOWER SRAM
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M48Z58, M48Z58Y
Figure 2A. DIP Pin Connections
Figure 2B. SOIC Pin Connections
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
28
2
27
3
26
4
25
5
24
6
23
7 M48Z58 22
8 M48Z58Y 21
9
20
10
19
11
18
12
17
13
16
14
15
VCC
W
NC
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
AI01177B
Warning: NC = Not Connected.
NC
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
28
2
27
3
26
4
25
5
24
6
23
7
22
M48Z58Y
8
21
9
20
10
19
11
18
12
17
13
16
14
15
AI01178B
Warning: NC = Not Connected.
VCC
W
NC
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
Table 2. Absolute Maximum Ratings (1)
Symbol
Parameter
Value
Unit
TA
Ambient Operating Temperature Grade 1
Grade 6
0 to 70
–40 to 85
°C
TSTG
TSLD (2)
Storage Temperature (VCC Off)
Lead Solder Temperature for 10 seconds
–40 to 85
°C
260
°C
VIO
Input or Output Voltages
–0.3 to 7
V
VCC
Supply Voltage
–0.3 to 7
V
IO
Output Current
20
mA
PD
Power Dissipation
1
W
Notes: 1. Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a
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.
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.
Table 3. Operating Modes (1)
Mode
VCC
E
G
Deselect
VIH
X
4.75V to 5.5V
Write
or
VIL
X
Read
4.5V to 5.5V
VIL
VIL
Read
VIL
VIH
Deselect VSO to VPFD (min) (2)
X
X
Deselect
≤ VSO
X
X
Notes: 1. X = VIH or VIL; VSO = Battery Back-up Switchover Voltage.
2. See Table 7 for details.
2/17
W
DQ0-DQ7
Power
X
High Z
Standby
VIL
DIN
Active
VIH
DOUT
Active
VIH
High Z
Active
X
High Z
CMOS Standby
X
High Z Battery Back-up Mode
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