CY62256N
256-Kbit (32 K 8) Static RAM
256-Kbit (32 K 8) Static RA
Features Functional Description
Temperature ranges The CY62256N is a high performance CMOS static RAM
organized as 32K words by 8 bits. Easy memory expansion is
Commercial: 0 C to +70 C
provided by an active LOW chip enable (CE) and active LOW
Industrial: 40 C to +85 C
output enable (OE) and tristate drivers. This device has an
Automotive-A: 40 C to +85 C
automatic power-down feature, reducing the power consumption
Automotive-E: 40 C to +125 C
by 99.9 percent when deselected.
High speed: 55 ns
An active LOW write enable signal (WE) controls the
writing/reading operation of the memory. When CE and WE
Voltage range: 4.5 V to 5.5 V operation
inputs are both LOW, data on the eight data input/output pins
Low active power
(I/O through I/O ) is written into the memory location addressed
0 7
by the address present on the address pins (A through A ).
275 mW (max)
0 14
Reading the device is accomplished by selecting the device and
Low standby power (LL version)
enabling the outputs, CE and OE active LOW, while WE remains
82.5 W (max)
inactive or HIGH. Under these conditions, the contents of the
location addressed by the information on address pins are
Easy memory expansion with CE and OE Features
present on the eight data input/output pins.
TTL-compatible inputs and outputs
The input/output pins remain in a high impedance state unless
the chip is selected, outputs are enabled, and write enable (WE)
Automatic power-down when deselected
is HIGH.
CMOS for optimum speed and power
For a complete list of related documentation, click here.
Available in Pb-free and non Pb-free 28-pin (600-mil) PDIP,
28-pin (300-mil) narrow SOIC, 28-pin TSOP I, and 28-pin
reverse TSOP I packages
Logic Block Diagram
I/O
0
INPUTBUFFER
I/O
1
A
10
A
9
I/O
2
A
8
A
7
A I/O
3
6
32K x 8
A
5
ARRAY
A
I/O
4
4
A
3
A
2
I/O
5
CE
I/O
6
POWER
WE COLUMN
DOWN
DECODER
I/O
7
OE
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document Number: 001-06511 Rev. *J Revised April 28, 2017
ROW DECODER
A
14
A
13
A
12
A
11
A
1
A
0
SENSE AMPSCY62256N
Contents
Product Portfolio ..............................................................3 Truth Table ...................................................................... 11
Pin Configurations ...........................................................3 Ordering Information ...................................................... 12
Pin Definitions ..................................................................3 Ordering Code Definitions ......................................... 12
Maximum Ratings .............................................................4 Package Diagrams .......................................................... 13
Operating Range ...............................................................4 Acronyms ........................................................................15
Electrical Characteristics .................................................4 Document Conventions ................................................. 15
Capacitance ......................................................................5 Units of Measure ....................................................... 15
Thermal Resistance ..........................................................5 Document History Page ................................................. 16
AC Test Loads and Waveforms .......................................5 Sales, Solutions, and Legal Information ...................... 17
Data Retention Characteristics .......................................6 Worldwide Sales and Design Support ....................... 17
Data Retention Waveform ................................................6 Products ....................................................................17
Switching Characteristics ................................................7 PSoC Solutions ...................................................... 17
Switching Waveforms ......................................................8 Cypress Developer Community ................................. 17
Typical DC and AC Characteristics ..............................10 Technical Support ..................................................... 17
Document Number: 001-06511 Rev. *J Page 2 of 17