CY7C1019D_11 Datasheet, PDF (1/15 Pages) Cypress Semiconductor – 1-Mbit (128 K × 8) Static RAM CMOS for optimum speed/power

CY7C1019D
1-Mbit (128 K × 8) Static RAM
1-Mbit (128 K × 8) Static RAM
Features
■ Pin- and function-compatible with CY7C1019B
■ High speed
❐ t_AA = 10 ns
■ Low active power
❐ I_CC = 80 mA @ 10 ns
■ Low CMOS standby power
❐ I_SB2 = 3 mA
■ 2.0 V Data retention
■ Automatic power-down when deselected
■ CMOS for optimum speed/power
■ Center power/ground pinout
■ Easy memory expansion with CE and OE options
■ Functionally equivalent to CY7C1019B
■ Available in Pb-free 32-pin 400-Mil wide Molded SOJ and
32-pin TSOP II packages
Logic Block Diagram
Functional Description ^[1]
The CY7C1019D is a high-performance CMOS static RAM
organized as 131,072 words by 8 bits. Easy memory expansion
is provided by an active LOW Chip Enable (CE), an active LOW
Output Enable (OE), and tri-state drivers. This device has an
automatic power-down feature that significantly reduces power
consumption when deselected. The eight input and output pins
(IO₀ through IO₇) are placed in a high-impedance state when:
■ Deselected (CE HIGH)
■ Outputs are disabled (OE HIGH)
■ When the write operation is active (CE LOW, and WE LOW).
Write to the device by taking Chip Enable (CE) and Write Enable
(WE) inputs LOW. Data on the eight IO pins (IO₀ through IO₇) is
then written into the location specified on the address pins (A₀
through A₁₆).
Read from the device by taking Chip Enable (CE) 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 appears on the IO pins.
INPUT BUFFER
IO0
IO1
A0
A1
IO2
A2
A3
128K x 8
IO3
A4
A5
ARRAY
IO4
A6
A7
IO5
A8
IO6
CE
WE
COLUMN DECODER
POWER
DOWN
IO7
OE
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 • 198 Champion Court
Document #: 38-05464 Rev. *G
• San Jose, CA 95134-1709 • 408-943-2600
Revised May 2, 2011
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