M48T35-70MH1 STMICROELECTRONICS [STMicroelectronics], M48T35-70MH1 Datasheet - Page 2

• Manufacturer Part Number: M48T35-70MH1
• Description: 256 Kbit 32Kb x8 TIMEKEEPER SRAM
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

M48T35, M48T35Y
Figure 2A. DIP Connections
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
DESCRIPTION
The M48T35/35Y TIMEKEEPER
x8 non-volatile static RAM and real time clock. The
monolithic chip is available in two special packag-
es to provide a highly integrated battery backed-up
memory and real time clock solution.
The M48T35/35Y is a non-volatile pin and function
equivalent to any JEDEC standard 32Kb x8
SRAM. It also easily fits into many ROM, EPROM,
2/18
Symbol
T
CAUTION: Negative undershoots below –0.3V are not allowed on any pin while in the Battery Back-up mode.
CAUTION: Do NOT wave solder SOIC to avoid damaging SNAPHAT sockets.
2. Soldering temperature not to exceed 260°C for 10 seconds (total thermal budget not to exceed 150°C for longer than 30 seconds).
T
SLD
V
V
P
T
STG
I
CC
O
IO
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.
A
D
(2)
DQ0
DQ1
DQ2
V SS
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
Ambient Operating Temperature
Storage Temperature (V
Lead Solder Temperature for 10 seconds
Input or Output Voltages
Supply Voltage
Output Current
Power Dissipation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
M48T35Y
M48T35
AI01621B
28
27
26
25
24
23
22
21
20
19
18
17
16
15
®
RAM is a 32Kb
V CC
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
CC
Parameter
(1)
Off, Oscillator Off)
Figure 2B. SOIC Connections
and EEPROM sockets, providing the non-volatility
of PROMs without any requirement for special
write timing or limitations on the number of writes
that can be performed.
The 28 pin 600mil DIP CAPHAT houses the
M48T35/35Y silicon with a quartz crystal and a
long life lithium button cell in a single package.
The 28 pin 330mil SOIC provides sockets with
gold plated contacts at both ends for direct con-
Grade 1
Grade 6
DQ0
DQ1
DQ2
V SS
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
M48T35Y
–40 to 85
–40 to 85
–0.3 to 7
–0.3 to 7
0 to 70
Value
260
20
1
AI01622B
28
27
26
25
24
23
22
21
20
19
18
17
16
15
V CC
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
Unit
mA
°C
°C
°C
°C
W
V
V