CY7C1041BN_1105 Datasheet, PDF (1/13 Pages) Cypress Semiconductor – 256 K x 16 Static RAM 2.0 V data retention (400 uW at 2.0 V retention)

CY7C1041BN
256 K × 16 Static RAM
Features
■ Temperature ranges
❐ Commercial: 0 °C to 70 °C
❐ Industrial: –40 °C to 85 °C
❐ Automotive-A: –40 °C to 85 °C
■ High speed
❐ t_AA = 15 ns
■ Low active power
❐ 1540 mW (max.)
■ Low CMOS standby power (L version)
❐ 2.75 mW (max.)
■ 2.0 V data retention (400 μW at 2.0 V retention)
■ Automatic power-down when deselected
■ TTL-compatible inputs and outputs
■ Easy memory expansion with CE and OE features
■ Available in Pb-free and non Pb-free 44-pin TSOP II and
molded 44-pin (400-Mil) SOJ packages
Selection Guide
Description
Maximum access time
Maximum operating current
Maximum CMOS standby current
Commercial
Industrial
Automotive-A
Commercial
Commercial L
Industrial
Automotive-A
Functional Description
The CY7C1041BN 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 CY7C1041BN 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.
-15
-20
Unit
15
20
ns
190
170
mA
210
190
–
–
190
–
3
3
mA
0.5
0.5
6
6
–
6
Cypress Semiconductor Corporation • 198 Champion Court
Document #: 001-06496 Rev. *E
• San Jose, CA 95134-1709 • 408-943-2600
Revised May 12, 2011
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