m48t18 STMicroelectronics, m48t18 Datasheet - Page 7

• Manufacturer Part Number: m48t18
• Description: 5v, 64kbit 8 Kb X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

Figure 3.
Figure 4.
CRYSTAL
32,768 Hz
LITHIUM
CELL
SOIC connections
Block diagram
OSCILLATOR AND
VOLTAGE SENSE
V CC
CLOCK CHAIN
SWITCHING
CIRCUITRY
AND
DQ0
DQ1
DQ2
V SS
A12
INT
A7
A6
A5
A4
A3
A2
A1
A0
INT
1
2
3
4
5
6
7
8
9
10
11
12
13
14
POWER
M48T08Y
V PFD
AI01021B
28
27
26
25
24
23
22
21
20
19
18
17
16
15
SRAM ARRAY
SRAM ARRAY
V CC
W
E2
A8
A9
A11
G
A10
E1
DQ7
DQ6
DQ5
DQ4
DQ3
8 x 8 BiPORT
8184 x 8
V SS
A0-A12
DQ0-DQ7
E1
E2
W
G
AI01333
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