CY62136EV30_1106 Datasheet, PDF (1/16 Pages) Cypress Semiconductor – 2-Mbit (128 K x 16) Static RAM Automatic power down when deselected

CY62136EV30 MoBL^®
2-Mbit (128 K × 16) Static RAM
2-Mbit (128 K × 16) Static RAM
Features
■ Very high speed: 45 ns
■ Wide voltage range: 2.20 V to 3.60 V
■ Pin compatible with CY62136CV30
■ Ultra low standby power
❐ Typical standby current: 1 A
❐ Maximum standby current: 7 A
■ Ultra low active power
❐ Typical active current: 2 mA at f = 1 MHz
■ Easy memory expansion with CE and OE features
■ Automatic power down when deselected
■ Complementary metal oxide semiconductor (CMOS) for
optimum speed/power
■ Offered in a Pb-free 48-ball very fine ball grid array (VFBGA)
and 44-pin thin small outline package (TSOP II) packages
Logic Block Diagram
Functional Description
The CY62136EV30 is a high performance CMOS static RAM
organized as 128K words by 16 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 significantly reduces power
consumption when addresses are not toggling. The device can
also be put into standby mode reducing power consumption by
more than 99% when deselected (CE HIGH). The input/output
pins (I/O₀ through I/O₁₅) are placed in a high impedance state
when: deselected (CE HIGH), outputs are disabled (OE HIGH),
both Byte High Enable and Byte Low Enable are disabled (BHE,
BLE HIGH), or during a write operation (CE LOW and WE LOW).
Writing to the device is accomplished by taking Chip Enable (CE)
and Write Enable (WE) inputs LOW. If Byte Low Enable (BLE) is
LOW, then data from I/O pins (I/O₀ through I/O₇), is written into
the location specified on the address pins (A₀ through A₁₆). If
Byte High Enable (BHE) is LOW, then data from I/O pins (I/O₈
through I/O₁₅) is written into the location specified on the address
pins (A₀ through A₁₆).
Reading from the device is accomplished by taking Chip Enable
(CE) and Output Enable (OE) LOW while forcing the Write
Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW, then data
from the memory location specified by the address pins appear
on I/O₀ to I/O₇. If Byte High Enable (BHE) is LOW, then data from
memory appear on I/O₈ to I/O₁₅. See the Truth Table on page 11
for a complete description of read and write modes.
DATA IN DRIVERS
AA₁₉₀
A₈
A₇
A₆
A₅
128K x 16
A₄
RAM Array
A₃
A₂
AA₀₁
I/O₀–I/O₇
I/O₈–I/O₁₅
COLUMN DECODER
BHE
WE
CE
OE
BLE
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 38-05569 Rev. *E
• San Jose, CA 95134-1709 • 408-943-2600
Revised June 16, 2011
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