019
PRELIMINARY
CY7C1019
128K x 8 Static RAM
Features
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/O0 through I/O7) is then written into the location specified on the address pins (A0 through A16).
• High speed
— tAA = 10 ns
• CMOS for optimum speed/power
• Center power/ground pinout
• Automatic power-down when deselected
• Easy memory expansion with CE and OE options
Reading from the device is accomplished by taking chip enable (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/O0 through I/O7) 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).
Functional Description
The CY7C1019 is a high-performance CMOS static RAM organized 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.
The CY7C1019 is available in standard 400-mil-wide SOJs.
Logic Block Diagram
Pin Configuration
SOJ
Top View
A0
A1
A2
A3
I/O0
CE
I/O0
I/O1
VCC
VSS
INPUT BUFFER
I/O1
I/O2
I/O3
WE
A4
A5
A6
A7
I/O2
SENSE AMPS
ROW DECODER
A0
A1
A2
A3
A4
A5
A6
A7
A8
512 x 256 x 8
ARRAY
I/O3
I/O4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
COLUMN
DECODER
OE
I/O7
I/O6
VSS
VCC
I/O5
I/O4
A12
A11
A10
A9
A8
I/O6
POWER
DOWN
I/O7
WE
1019–1
A9
A 10
A 11
A 12
A 13
A 14
A 15
A 16
OE
A16
A15
A14
A13
1019–2
I/O5
CE
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
Selection Guide
7C1019–10
7C1019–12
7C1019–15
Maximum Access Time (ns)
10
12
15
Maximum Operating Current (mA)
240
220
200
210
190
175
10
10
10
1
1
1
L
Maximum Standby Current (mA)
L
Shaded areas contain advance information.
Cypress Semiconductor Corporation
Document #: 38-05055 Rev. **
•
3901 North First Street
•
San Jose
•
CA 95134 • 408-943-2600
Revised August 31, 2001
