m48t39y STMicroelectronics, m48t39y Datasheet - Page 2

• Manufacturer Part Number: m48t39y
• Description: 256 Kb 32k X8 Timekeeper Sram
• Manufacturer: STMicroelectronics

M48T39Y
Figure 2. DIP Connections
Table 2. Ordering Information Scheme
Example:
Device Type
M48T
Supply Voltage and Write Protect Voltage
39Y = V
Speed
-100 = 100ns
-150 = 150ns
Package
PM = PMDIP32
Temperature Range
1 = 0 to 70 °C
For a list of available options (Speed, Package, etc...) or for further information on any aspect of this de-
vice, please contact the ST Sales Office nearest to you.
2/4
CC
= 4.5V to 5.5V; V
INTA
INTB
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
15
16
M48T39Y
PFD
AI02312
= 4.2V to 4.5V
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V CC
SQW
V CC
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
M48T39Y
Table 1. Signal Names
A0-A14
DQ0-DQ7
E
G
W
INTA
INTB
SQW
V
V
CC
SS
-100 PM 1
Address Inputs
Data Inputs / Outputs
Chip Enable Input
Output Enable Input
Write Enable Input
Interrupt Output A (Open Drain)
Interrupt Output B (Open Drain)
Square Wave Output
Supply Voltage
Ground