CY7C1024AV33 Datasheet, PDF (1/11 Pages) Cypress Semiconductor – 128K x 24 Static RAM

024A V33
CY7C1024AV33
Features
• High speed
— t_AA = 10 ns
• CMOS for optimum speed/power
• Center power/ground pinout
• Automatic power-down when deselected
• Easy memory expansion with CE1, CE2, CE3 and OE
options
Functional Description^[1]
The CY7C1024AV33 is a high-performance CMOS static RAM
organized as 131,072 words by 24 bits. Easy memory expan-
sion is provided by an active LOW CE1, CE3, active HIGH
CE2, an active LOW Output Enable (OE), and three-state driv-
ers. This device has an automatic power-down feature that
significantly reduces power consumption when deselected.
Functional Block Diagram
128K x 24 Static RAM
Writing to the device is accomplished by taking Chip Enable
(CE1, CE2, CE3) active and Write Enable (WE) inputs LOW.
Data on the 24 I/O pins (I/O₀ through I/O₂₃) is then written into
the location specified on the address pins (A₀ through A₁₆).
Reading from the device is accomplished by taking Chip
Enable (CE1, CE2, CE3) active and Output Enable (OE) LOW
while forcing Write Enable (WE) HIGH. Under these condi-
tions, the contents of the memory location specified by the
address pins will appear on the I/O pins.
The 24 input/output pins (I/O₀ through I/O₂₃) are placed in a
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), or during a write
operation (CE1, CE3 LOW, CE2 HIGH, and WE LOW).
The CY7C1024AV33 is available in a standard 119-ball BGA
package and a 100-pin TQFP package.
V_CC
V_SS
A₀
DQ₀
MEMORY ARRAY
128K X 24
DQ₂₃
CE#
COLUMN
DECODER
CONTROL
CE1#
CE2
WE#
A₁₆
OE#
Selection Guide
7C1024AV33-10
7C1024AV33-12
7C1024AV33-15
Maximum Access Time (ns)
10
12
15
Maximum Operating Current (mA)
275
250
225
Maximum Standby Current (mA)
15
15
15
Note:
1. For guidelines on SRAM system design, please refer to the ‘System Design Guidelines’ Cypress application note, available on the internet at www.cypress.com.
Cypress Semiconductor Corporation • 3901 North First Street • San Jose, CA 95134 • 408-943-2600
Document #: 38-05149 Rev. *B
Revised November 13, 2002