鈥?/div>
100
碌W
鈥?Automatic power-down when deselected
鈥?TTL-compatible inputs and outputs
an active LOW output enable (OE), and three-state drivers.
These devices have an automatic power-down feature that re-
duces power consumption by more than 65% when the devic-
es are deselected.
Writing to the devices is accomplished by taking chip enable
(CE) and write enable (WE) inputs LOW. Data on the four I/O
pins (I/O
0
through I/O
3
) is then written into the location speci-
fied on the address pins (A
0
through A
17
).
Reading from the devices is accomplished by taking chip en-
able (CE) and output enable (OE) LOW while forcing write en-
able (WE) HIGH. Under these conditions, the contents of the
memory location specified by the address pins will appear on
the four I/O pins.
The four input/output pins (I/O
0
through I/O
3
) are placed in a
high-impedance state when the devices are deselected (CE
HIGH), the outputs are disabled (OE HIGH), or during a write
operation (CE and WE LOW).
The CY7C106 is available in a standard 400-mil-wide SOJ; the
CY7C1006 is available in a standard 300-mil-wide SOJ.
Functional Description
The CY7C106 and CY7C1006 are high-performance CMOS
static RAMs organized as 262,144 words by 4 bits. Easy mem-
ory expansion is provided by an active LOW chip enable (CE),
Logic Block Diagram
Pin Configuration
SOJ
Top View
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
A
10
CE
OE
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
INPUT BUFFER
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
ROW DECODER
SENSE AMPS
I/O
3
I/O
2
I/O
1
I/O
0
V
CC
A
17
A
16
A
15
A
14
A
13
A
12
A
11
NC
I/O
3
I/O
2
I/O
1
I/O
0
WE
C106鈥?
512 x 512 x 4
ARRAY
COLUMN
DECODER
POWER
DOWN
CE
WE
OE
C106鈥?
Selection Guide
Maximum Access Time (ns)
Maximum Operating
Current (mA)
Maximum Standby
Current (mA)
7C106-12
7C1006-12
12
165
50
7C106-15
7C1006-15
15
155
30
7C106-20
7C1006-20
20
145
30
7C106-25
7C1006-25
25
130
30
7C106-35
35
125
25
Cypress Semiconductor Corporation
Document #: 38-05033 Rev. **
A
0
A
10
A
11
A
12
A
13
A
14
A
15
A
16
A
17
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
鈥?/div>
CA 95134
鈥?408-943-2600
Revised July 9, 1998
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