CY6264
8K x 8 Static RAM
Features
Functional Description
• Temperature Ranges
The CY6264 is a high-performance CMOS static RAM
organized as 8192 words by 8 bits. Easy memory expansion
is provided by an active LOW chip enable (CE1), an active
HIGH chip enable (CE2), and active LOW output enable (OE)
and three-state drivers. Both devices have an automatic
power-down feature (CE1), reducing the power consumption
by over 70% when deselected. The CY6264 is packaged in a
450-mil (300-mil body) SOIC.
— Commercial: 0°C to 70°C
— Industrial: –40°C to 85°C
— Automotive-A: –40°C to 85°C
• High Speed
— 55 ns
• CMOS for optimum speed/power
• Easy memory expansion with CE1, CE2 and OE features
• TTL-compatible inputs and outputs
• Automatic power-down when deselected
An active LOW write enable signal (WE) controls the
writing/reading operation of the memory. When CE1 and WE
inputs are both LOW and CE2 is HIGH, data on the eight data
input/output pins (I/O0 through I/O7) is written into the memory
location addressed by the address present on the address
pins (A0 through A12). Reading the device is accomplished by
selecting the device and enabling the outputs, CE1 and OE
active LOW, CE2 active HIGH, while WE remains inactive or
HIGH. Under these conditions, the contents of the location
addressed by the information on address pins is present on
the eight data input/output pins.
• Available in Pb-free and non Pb-free 28-lead SNC
package
The input/output pins remain in a high-impedance state unless
the chip is selected, outputs are enabled, and write enable
(WE) is HIGH. A die coat is used to ensure alpha immunity.
Logic Block Diagram
Pin Configuration
SOIC
Top View
NC
V
CC
WE
CE
1
28
27
26
25
24
23
22
21
20
19
18
17
16
15
A
4
A
5
A
6
2
2
3
A
3
A
2
A
1
4
I/O
I/O
0
A
7
5
INPUT BUFFER
A
8
6
1
A
OE
A
0
CE
9
7
A
10
11
12
8
A
A
1
7
6
5
4
3
9
A
1
I/O
I/O
2
I/O
I/O
I/O
I/O
I/O
10
11
12
13
14
A
2
I/O
0
I/O
1
I/O
2
A
3
3
A
4
8K x 8
GND
ARRAY
A
5
I/O
I/O
I/O
I/O
4
5
6
7
A
6
A
7
A
8
POWER
DOWN
CE
1
COLUMN DECODER
CE
2
WE
OE
Cypress Semiconductor Corporation
Document #: 001-02367 Rev. *A
•
198 Champion Court
•
San Jose, CA 95134-1709
•
408-943-2600
Revised August 8, 2006