Cypress Semiconductor CY7C1019D Arkusz specyfikacji

Przeglądaj online lub pobierz pdf Arkusz specyfikacji dla Sprzęt komputerowy Cypress Semiconductor CY7C1019D. Cypress Semiconductor CY7C1019D 11 stron. 1-mbit (128k x 8) static ram

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Features
• Pin- and function-compatible with CY7C1019B
• High speed
— t
= 10 ns
AA
• Low active power
— I
= 80 mA @ 10 ns
CC
• Low CMOS standby power
— I
= 3 mA
SB2
• 2.0V 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
CE
WE
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
Document #: 38-05464 Rev. *E
INPUT BUFFER
A 0
A 1
A 2
128K x 8
A 3
A 4
ARRAY
A 5
A 6
A 7
A 8
COLUMN DECODER
•
198 Champion Court
1-Mbit (128K x 8) Static RAM
Functional Description
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 (IO
through IO
0
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 (IO
through IO
) is then written into the location specified on the
7
address pins (A
through A
0
16
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.
POWER
DOWN
,
•
San Jose
CA 95134-1709
CY7C1019D
[1]
) are placed in a
7
).
IO 0
IO 1
IO 2
IO 3
IO 4
IO 5
IO 6
IO 7
•
408-943-2600
Revised February 22, 2007
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