CY7C1041BNV33_11 Datasheet, PDF (1/14 Pages) Cypress Semiconductor – 256 K x 16 Static RAM Low CMOS standby power 1.8 mW (max.)

CY7C1041BNV33
256 K × 16 Static RAM
256 K × 16 Static RAM
Features
■ High speed
❐ t_AA = 12 ns
■ Low active power
❐ 612 mW (max.)
■ Low CMOS standby power
❐ 1.8 mW (max.)
■ 2.0 V Data Retention (660 W at 2.0 V retention)
■ Automatic power-down when deselected
■ TTL-compatible inputs and outputs
■ Easy memory expansion with CE and OE features
Logic Block Diagram
A₀
A₁
A₂
AA₃₄
A₅
A₆
AA₇₈
INPUT BUFFER
256K x 16
ARRAY
1024 x 4096
COLUMN
DECODER
Functional Description
The CY7C1041BNV33 is a high-performance CMOS Static RAM
organized as 262,144 words by 16 bits.
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 A₁₇). 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 A₁₇).
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 will
appear on I/O₀ to I/O₇. If Byte High Enable (BHE) is LOW, then
data from memory will appear on I/O₈ to I/O₁₅. See the truth table
at the back of this data sheet for a complete description of read
and write modes.
The input/output pins (I/O₀ through I/O₁₅) are placed in a
high-impedance state when the device is deselected (CE HIGH),
the outputs are disabled (OE HIGH), the BHE and BLE are
disabled (BHE, BLE HIGH), or during a write operation (CE LOW,
and WE LOW).
The CY7C1041BNV33 is available in a standard 44-pin
400-mil-wide body width SOJ and 44-pin TSOP II package with
center power and ground (revolutionary) pinout.
I/O₀ – I/O₇
I/O₈ – I/O₁₅
BHE
WE
CE
OE
BLE
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 001-06434 Rev. *C
• San Jose, CA 95134-1709 • 408-943-2600
Revised March 30, 2011
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