2
V62C2164096 Rev.1.0 November 2001
MOSEL VITELIC
V62C2164096
Pin Descriptions
A0–A
17
Address Inputs
These 18 address inputs select one of the 256K x
16 bit segments in th e RAM.
CE
1
,CE2* Chip Enable Inputs
CE
1
is active LOW and CE2is active HIGH. Both
chip enabl es must be active to read from or write to
the device. If either chip enable is not active, the
device is deselected and i s in a s tandby power
mode. The I/O pins will be in the high-impedance
state when deselected.
OE
Output Enable Input
The output enable input is active LOW. With chip
enabled, when OE
is Low and WE High, data will
be presented on the I/O pins. The I /O pins w ill be in
the high impeda nc e state when OE
is High.
UBE
,LBE Byte Enable
Active low inputs. These inputs are used to enable
the upper or lower dat a byte.
WE
WriteEnable Input
The write enable in put is active LOW and controls
read and write operations. With the chip enabled,
when WE
is HIGH and OE is LOW, out put data will
be present at the I/O pins; when WE
is LOW and
OE is HIGH, the data present on the I/O pins will be
written into the selected memory locations.
I/O
1
–I/O
16
Data Input and Data Output Ports
These 16 bidirectional ports are used to read data
from and write data into the RAM.
V
CC
Power Supply
GND Ground
Pin Configurations (Top View)
44-Pin TSO P-II (Standard)
48 BGA
A4
A3
A2
A1
A0
CE
1
I/O1
I/O2
I/O3
I/O4
VCC
GND
I/O5
I/O6
I/O7
I/O8
WE
A15
A14
A13
A12
A16
A5
A6
A7
OE
UBE
LBE
I/O16
I/O15
I/O14
I/O13
GND
VCC
I/O12
I/O11
I/O10
I/O9
NC
A8
A9
A10
A11
A17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A
123456 1
Note: NC means no connect.
23456
B
C
D
E
F
G
H
TOP VIEW
TOP VIEW
A
BLE
I/O9
I/O10
B
C
D
E
F
G
H
VSS
VCC
I/O15
I/O16
NC
OE
BHE
I/O11
I/O12
I/O13
I/O14
NC
A8
A0
A3
A5
A17
NC
A14
A12
A9
A1
A4
A6
A7
A16
A15
A13
A10
A2
CE
1
I/O2
I/O4
I/O5
I/O6
WE
A11
CE
2
I/O1
I/O3
VCC
VSS
I/O7
I/O8
NC
*CE2is available on BGA package only.