019
PRELIMINARY
CY7C1019
128K x 8 Static RAM
Features
鈥?High speed
鈥?t
AA
= 10 ns
鈥?CMOS for optimum speed/power
鈥?Center power/ground pinout
鈥?Automatic power-down when deselected
鈥?Easy memory expansion with CE and OE options
Writing to the device is accomplished by taking chip enable
(CE) and write enable (WE) inputs LOW. Data on the eight I/O
pins (I/O
0
through I/O
7
) is then written into the location speci-
fied on the address pins (A
0
through A
16
).
Reading from the device is accomplished by taking chip en-
able (CE) and output enable (OE) LOW while forcing write
enable (WE) HIGH. Under these conditions, the contents of
the memory location specified by the address pins will appear
on the I/O pins.
The eight input/output pins (I/O
0
through I/O
7
) are placed in a
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), or during a write
operation (CE LOW, and WE LOW).
The CY7C1019 is available in standard 400-mil-wide SOJs.
Functional Description
The CY7C1019 is a high-performance CMOS static RAM or-
ganized as 131,072 words by 8 bits. Easy memory expansion
is provided by an active LOW chip enable (CE), an active LOW
output enable (OE), and three-state drivers. This device has
an automatic power-down feature that significantly reduces
power consumption when deselected.
Logic Block Diagram
Pin Configuration
SOJ
Top View
A
0
A
1
A
2
A
3
I/O
0
INPUT BUFFER
CE
I/O
0
I/O
1
V
CC
V
SS
I/O
2
I/O
3
WE
A
4
A
5
A
6
A
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
A
16
A
15
A
14
A
13
OE
I/O
7
I/O
6
V
SS
V
CC
I/O
5
I/O
4
A
12
A
11
A
10
A
9
A
8
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
I/O
1
ROW DECODER
I/O
2
SENSE AMPS
512 x 256 x 8
ARRAY
I/O
3
I/O
4
I/O
5
1019鈥?
CE
WE
OE
COLUMN
DECODER
POWER
DOWN
I/O
6
I/O
7
Selection Guide
7C1019鈥?0
Maximum Access Time (ns)
Maximum Operating Current (mA)
L
Maximum Standby Current (mA)
L
Shaded areas contain advance information.
A
9
A
10
A
11
A
12
A
13
A
14
A
15
A
16
1019鈥?
7C1019鈥?2
12
220
190
10
1
7C1019鈥?5
15
200
175
10
1
10
240
210
10
1
Cypress Semiconductor Corporation
Document #: 38-05055 Rev. **
鈥?/div>
3901 North First Street
鈥?/div>
San Jose
鈥?/div>
CA 95134 鈥?408-943-2600
Revised August 31, 2001
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