CY6264
8K × 8 Static RAM
8K × 8 Static RAM
Features
■
Functional Description
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 (CE
1
), an active HIGH chip enable
(CE
2
), and active LOW output enable (OE) and three-state
drivers. Both devices have an automatic power-down feature
(CE
1
), reducing the power consumption by over 70% when
deselected. The CY6264 is packaged in a 450-mil (300-mil body)
SOIC.
An active LOW write enable signal (WE) controls the
writing/reading operation of the memory. When CE
1
and WE
inputs are both LOW and CE
2
is HIGH, data on the eight data
input/output pins (I/O
0
through I/O
7
) is written into the memory
location addressed by the address present on the address pins
(A
0
through A
12
). Reading the device is accomplished by
selecting the device and enabling the outputs, CE
1
and OE
active LOW, CE
2
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.
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.
For a complete list of related documentation, click
here.
Temperature ranges:
❐
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 CE
1
, CE
2
and OE features
TTL-compatible inputs and outputs
Automatic power-down when deselected
Available in Pb-free 28-pin SNC package
■
■
■
■
■
■
Logic Block Diagram
Cypress Semiconductor Corporation
Document Number: 001-02367 Rev. *G
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Revised October 17, 2016
CY6264
Contents
Pin Configuration ............................................................. 3
Selection Guide ................................................................ 3
Maximum Ratings ............................................................. 4
Operating Range ............................................................... 4
Electrical Characteristics ................................................. 4
Capacitance ...................................................................... 5
AC Test Loads and Waveforms ....................................... 5
Switching Characteristics ................................................ 6
Switching Waveforms ...................................................... 7
Typical DC and AC Characteristics .............................. 10
Truth Table ...................................................................... 11
Address Designators ..................................................... 11
Ordering Information ...................................................... 12
Ordering Code Definitions ......................................... 12
Package Diagram ............................................................ 13
Acronyms ........................................................................ 14
Document Conventions ................................................. 14
Units of Measure ....................................................... 14
Document History Page ................................................. 15
Sales, Solutions, and Legal Information ...................... 16
Worldwide Sales and Design Support ....................... 16
Products .................................................................... 16
PSoC®Solutions ....................................................... 16
Cypress Developer Community ................................. 16
Technical Support ..................................................... 16
Document Number: 001-02367 Rev. *G
Page 2 of 16
CY6264
Pin Configuration
Figure 1. 28-pin SOIC pinout (Top View)
Selection Guide
Description
Maximum access time
Maximum operating current
Commercial
Industrial
Automotive-A
Maximum CMOS standby current
Commercial
Industrial
Automotive-A
Range
-55
55
100
260
–
15
30
–
-70
70
100
200
200
15
30
30
Unit
ns
mA
mA
mA
mA
mA
mA
Document Number: 001-02367 Rev. *G
Page 3 of 16
CY6264
Maximum Ratings
Exceeding maximum ratings may shorten the useful life of the
device. User guidelines are not tested.
Storage temperature ................................ –65
C
to +150
C
Ambient temperature
with power applied ................................... –55
C
to +125
C
Supply voltage to ground potential
[1]
..........–0.5 V to +7.0 V
DC voltage applied to outputs
in high Z state
[1]
..........................................–0.5 V to +7.0 V
DC input voltage
[1]
......................................–0.5 V to +7.0 V
Output current into outputs (LOW) ............................. 20 mA
Static discharge voltage
(per MIL-STD-883, Method 3015) ......................... > 2001 V
Latch-up current ................................................... > 200 mA
Operating Range
Range
Commercial
Industrial
Automotive-A
Ambient Temperature
0
C
to +70
C
–40
C
to +85
C
–40
C
to +85
C
V
CC
5 V
10%
Electrical Characteristics
Over the Operating Range
Parameter
V
OH
V
OL
V
IH
V
IL
I
IX
I
OZ
I
CC
Description
Output HIGH voltage
Output LOW voltage
Input HIGH voltage
Input LOW voltage
[1]
Input leakage current
Output leakage current
V
CC
operating supply current
GND
V
I
V
CC
GND
V
I
V
CC
, output disabled
V
CC
= Max, I
OUT
= 0 mA Commercial
Industrial
Automotive-A
I
SB1
Automatic CE
1
power-down
current
Max V
CC
, CE
1
V
IH
,
Min duty cycle =100%
Commercial
Industrial
Automotive-A
I
SB2
Automatic CE
1
power-down
current
Max V
CC
,
CE
1
V
CC
– 0.3 V,
V
IN
V
CC
– 0.3 V or
V
IN
0.3 V
Commercial
Industrial
Automotive-A
Test Conditions
V
CC
= Min, I
OH
= –4.0 mA
V
CC
= Min, I
OL
= 8.0 mA
-55
Min
2.4
–
2.2
–0.5
–5
–5
–
–
–
–
–
–
–
–
–
15
30
20
50
Max
–
0.4
V
CC
0.8
+5
+5
100
260
Min
2.4
–
2.2
–0.5
–5
–5
–
–
–
–
–
–
–
–
–
-70
Max
–
0.4
V
CC
0.8
+5
+5
100
200
200
20
40
40
15
30
30
mA
mA
Unit
V
V
V
V
A
A
mA
Note
1. Minimum voltage is equal to –3.0 V for pulse durations less than 30 ns.
Document Number: 001-02367 Rev. *G
Page 4 of 16
CY6264
Capacitance
Parameter
[2]
C
IN
C
OUT
Description
Input capacitance
Output capacitance
Test Conditions
T
A
= 25
C,
f = 1 MHz, V
CC
= 5.0 V
Max
7
7
Unit
pF
pF
AC Test Loads and Waveforms
Figure 2. AC Test Loads and Waveforms
5V
OUTPUT
30 pF
INCLUDING
JIG AND
SCOPE
R1 481
5V
OUTPUT
R2
255
5 pF
INCLUDING
JIG AND
SCOPE
R1 481
ALL INPUT PULSES
3.0 V
R2
255
GND
10%
90%
90%
10%
5 ns
5 ns
(a)
(b)
Equivalent to:
THEVENIN EQUIVALENT
OUTPUT
167
1.73 V
Note
2. Tested initially and after any design or process changes that may affect these parameters.
Document Number: 001-02367 Rev. *G
Page 5 of 16
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