CY62148ESL MoBL
4-Mbit (512 K 8) Static RAM
4-Mbit (512 K 8) Static RAM
Features Functional Description
Higher speed up to 55 ns The CY62148ESL is a high performance CMOS static RAM
organized as 512 K words by 8-bits. This device features
Wide voltage range: 2.2 V to 3.6 V and 4.5 V to 5.5 V
advanced circuit design to provide ultra low active current. This
is ideal for providing More Battery Life (MoBL ) in portable
Ultra low standby power
applications. The device also has an automatic power-down
Typical standby current: 1 A
feature that significantly reduces power consumption. Placing
Maximum standby current: 7 A
the device in standby mode reduces power consumption by
Ultra low active power more than 99 percent when deselected (CE HIGH). The eight
input and output pins (I/O through I/O ) are placed in a high
Typical active current: 2 mA at f = 1 MHz 0 7
impedance state when the device is deselected (CE HIGH), the
Easy memory expansion with CE and OE features
outputs are disabled (OE HIGH), or during a write operation (CE
LOW and WE LOW).
Automatic power-down when deselected
To write to the device, take Chip Enable (CE) and Write Enable
Complementary metal oxide semiconductor (CMOS) for
(WE) inputs LOW. Data on the eight I/O pins (I/O through I/O )
0 7
optimum speed and power
is then written into the location specified on the address pins (A
0
through A ).
Available in Pb-free 32-pin shrunk thin small outline package
18
(STSOP) package
To read from the device, take 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 appear on the I/O pins.
The CY62148ESL device is suitable for interfacing with
processors that have TTL I/P levels. It is not suitable for
processors that require CMOS I/P levels. Please see Electrical
Characteristics on page 4 for more details and suggested
alternatives.
For a complete list of related resources, click here.
Logic Block Diagram
A
0 I/O
INPUT BUFFER IO 0
0
A
1
A
2 I/O
IO 1
1
A
3
A
4 I/O
IO 2
2
A
5
A
I/O
6 3
512K x 8 IO
3
A
7
A
I/O
8 4
ARRAY IO
4
A
9
A
I/O
10 5
IO
5
A
11
A
I/O
12 6
IO
6
CE I/O
7
POWER IO
7
COLUMN DECODER
WE DOWN
OE
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document Number: 001-50045 Rev. *J Revised May 28, 2015
ROW DECODER
A
13
A
14
A
15
A
16
A
17
A
18
SENSE AMPS
CY62148ESL MoBL
Contents
Pin Configuration .............................................................3 Ordering Information ...................................................... 12
Product Portfolio ..............................................................3 Ordering Code Definitions ......................................... 12
Maximum Ratings .............................................................4 Package Diagram ............................................................ 13
Operating Range ...............................................................4 Acronyms ........................................................................14
Electrical Characteristics .................................................4 Document Conventions ................................................. 14
Capacitance ......................................................................5 Units of Measure ....................................................... 14
Thermal Resistance ..........................................................5 Document History Page ................................................. 15
AC Test Loads and Waveforms .......................................5 Sales, Solutions, and Legal Information ...................... 16
Data Retention Characteristics .......................................6 Worldwide Sales and Design Support ....................... 16
Data Retention Waveform ................................................6 Products ....................................................................16
Switching Characteristics ................................................7 PSoC Solutions ...................................................... 16
Switching Waveforms ......................................................8 Cypress Developer Community ................................. 16
Truth Table ......................................................................11 Technical Support ..................................................... 16
Document Number: 001-50045 Rev. *J Page 2 of 16