m48t129v STMicroelectronics, m48t129v Datasheet - Page 5

• Manufacturer Part Number: m48t129v
• Description: 5.0 Or 3.3v, 1 Mbit 128 Kbit X 8 Timekeeper Sram
• Manufacturer: STMicroelectronics

Figure 3. 32-pin Module Connections
Figure 4. Block Diagram
CRYSTAL
32,768 Hz
LITHIUM
CELL
OSCILLATOR AND
VOLTAGE SENSE
CLOCK CHAIN
SWITCHING
CIRCUITRY
AND
V CC
DQ0
DQ1
DQ2
RST
V SS
A16
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
POWER
M48T129Y
M48T129V
V PFD
AI02261
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V CC
A15
IRQ/FT
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
SRAM ARRAY
TIMEKEEPER
131,056 x 8
REGISTERS
16 x 8
V SS
M48T129Y, M48T129V
RST
IRQ/FT
A0-A16
DQ0-DQ7
E
W
G
AI02583
5/30