CY7C1046D
4-Mbit (1 M 4) Static RAM
4-Mbit (1 M 4) Static RAM
provided by an active LOW Chip Enable (CE), an active LOW
Features
Output Enable (OE), and tri-state drivers. Writing to the device is
accomplished by taking Chip Enable (CE) and Write Enable
Pin- and function-compatible with CY7C1046B
(WE) inputs LOW. Data on the four I/O pins (I/O through I/O )
0 3
High speed
is then written into the location specified on the address pins (A
0
t = 10 ns
through A ).
AA
19
CMOS for optimum speed and power Reading from the device is accomplished by taking Chip Enable
(CE) and Output Enable (OE) LOW while forcing Write Enable
Low active power
(WE) HIGH. Under these conditions, the contents of the memory
I = 90 mA at 10 ns
CC location specified by the address pins will appear on the I/O pins.
Low CMOS standby power
The four input/output pins (I/O through I/O ) are placed in a
0 3
high-impedance state when the device is deselected (CE HIGH),
I = 10 mA
SB2
the outputs are disabled (OE HIGH), or during a write operation
Data retention at 2.0 V
(CE LOW, and WE LOW).
Automatic power-down when deselected
The CY7C1046D is available in a standard 400-mil-wide 32-pin
SOJ package with center power and ground (revolutionary)
TTL-compatible inputs and outputs
pinout.
Easy memory expansion with CE and OE features
The CY7C1046D device is suitable for interfacing with
processors that have TTL I/P levels. It is not suitable for
Available in lead-free 400-mil-wide 32-pin SOJ package
processors that require CMOS I/P levels. Please see Electrical
Characteristics on page 4 for more details and suggested
Functional Description
alternatives.
The CY7C1046D is a high-performance CMOS static RAM
For a complete list of related documentation, click here.
organized as 1M words by 4 bits. Easy memory expansion is
Logic Block Diagram
INPUT BUFFER
A
0
A
1
A
2
I/O
0
A
3
A
4
A
I/O
5
1
1M x 4
A
6
A
7
I/O
2
A
8
A
9
I/O
A 3
10
POWER
COLUMN
CE DOWN
DECODER
WE
OE
Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600
Document Number: 38-05705 Rev. *G Revised November 20, 2014
ROW DECODER
A
11
A
12
A
13
A
14
A
15
A
16
A
17
A
18
A
19
SENSE AMPSCY7C1046D
Contents
Selection Guide ................................................................3 Ordering Information ...................................................... 12
Pin Configuration .............................................................3 Ordering Code Definitions ......................................... 12
Maximum Ratings .............................................................4 Package Diagrams .......................................................... 13
Operating Range ...............................................................4 Acronyms ........................................................................14
Electrical Characteristics .................................................4 Document Conventions ................................................. 14
Capacitance ......................................................................5 Units of Measure ....................................................... 14
Thermal Resistance ..........................................................5 Document History Page ................................................. 15
AC Test Loads and Waveforms .......................................5 Sales, Solutions, and Legal Information ...................... 16
Data Retention Characteristics .......................................6 Worldwide Sales and Design Support ....................... 16
Data Retention Waveform ................................................6 Products ....................................................................16
Switching Characteristics ................................................7 PSoC Solutions ...................................................... 16
Switching Waveforms ......................................................8 Cypress Developer Community ................................. 16
Truth Table ......................................................................11 Technical Support ..................................................... 16
Document Number: 38-05705 Rev. *G Page 2 of 16