CY62128EV30 MoBL
®
1 Mbit (128K x 8) Static RAM
Features
• Very high speed: 45 ns
• Temperature ranges–
— Industrial: –40°C to +85°C
— Automotive-A: –40°C to +85°C
— Automotive-E: –40°C to +125°C
• Wide voltage range: 2.20V – 3.60V
• Pin compatible with CY62128DV30
• Ultra low standby power
— Typical standby current: 1
µA
— Maximum standby current: 4
µA
• Ultra low active power
— Typical active current: 1.3 mA @ f = 1 MHz
• Easy memory expansion with CE
1
, CE
2
and OE features
• Automatic power down when deselected
• CMOS for optimum speed and power
• Offered in Pb-free 32-pin SOIC, 32-pin TSOP I, and 32-pin
STSOP packages
Functional Description
The CY62128EV30 is a high performance CMOS static RAM
module organized as 128K words by 8 bits. This device
features advanced circuit design to provide ultra low active
current. This is ideal for providing More Battery Life™ (MoBL
®
)
in portable applications such as cellular telephones. The
device also has an automatic power down feature that signifi-
cantly reduces power consumption when addresses are not
toggling. Placing the device into standby mode reduces power
consumption by more than 99% when deselected (CE
1
HIGH
or CE
2
LOW). The eight input and output pins (IO
0
through
IO
7
) are placed in a high impedance state when the device is
deselected (CE
1
HIGH or CE
2
LOW), the outputs are disabled
(OE HIGH), or a write operation is in progress (CE
1
LOW and
CE
2
HIGH and WE LOW).
To write to the device, take Chip Enable (CE
1
LOW and CE
2
HIGH) and Write Enable (WE) inputs LOW. Data on the eight
IO pins is then written into the location specified on the
Address pin (A
0
through A
16
).
To read from the device, take Chip Enable (CE
1
LOW and CE
2
HIGH) 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 IO pins.
Logic Block Diagram
CE1
CE2
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
WE
OE
INPUT BUFFER
IO0
IO1
SENSE AMPS
IO2
IO3
IO4
IO5
IO6
ROW DECODER
128K x 8
ARRAY
COLUMN DECODER
POWER
DOWN
IO7
A12
A13
A14
A15
Note
1. For best practice recommendations, refer to the Cypress application note
“System Design Guidelines”
at
http://www.cypress.com.
A16
Cypress Semiconductor Corporation
Document #: 38-05579 Rev. *C
•
198 Champion Court
•
San Jose
,
CA 95134-1709
•
408-943-2600
Revised May 07, 2007
CYPRESS [ CYPRESS SEMICONDUCTOR ]
