512K x 8 Static RAM
CY7C1049BNV33
Cypress Semiconductor Corporation
•
198 Champion Court
•
San Jose
, CA 95134-1709
•
408-943-2600
Document #: 001-06432 Rev. **
Revised February 1, 2006
Features
•High speed
—tAA = 12 ns
• Low active power
— 504 mW (max.)
• Low CMOS standby power (Commercial L version)
— 1.8 mW (max.)
• 2.0V Data Retention (660
µW at 2.0V retention)
• Automatic power-down when deselected
• TTL-compatible inputs and outputs
• Easy memory expansion with CE and OE features
Functional Description[1]
The CY7C1049BNV33 is a high-performance CMOS Static
RAM organized as 524,288 words by 8 bits. Easy memory
expansion is provided by an active LOW Chip Enable (CE), an
active LOW Output Enable (OE), and three-state drivers.
Writing to the device is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. Data on the eight I/O
pins (I/O0 through I/O7) is then written into the location
specified on the address pins (A0 through A18).
Reading from the device is accomplished 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 will appear
on the I/O pins.
The eight input/output pins (I/O0 through I/O7) 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 (CE LOW, and WE LOW).
The CY7C1049BNV33 is available in a standard 400-mil-wide
36-pin SOJ and 44-pin TSOPII packages with center power
and ground (revolutionary) pinout.
Logic Block Diagram
Pin Configuration
A1
A2
A3
A4
A5
A6
A7
A8
COLUMN
DECODER
INPUTBUFFER
POWER
DOWN
WE
OE
I/O0
I/O1
I/O2
I/O3
512K x 8
ARRAY
I/O7
I/O6
I/O5
I/O4
A0
CE
1
2
3
4
5
6
7
8
9
10
11
14
23
24
28
27
26
25
29
32
31
30
Top View
SOJ
12
13
33
36
35
34
16
15
21
22
GND
A1
A2
A3
A4
A5
A6
A7
A8
WE
VCC
A18
A15
A12
A14
I/O5
I/O4
A9
A0
I/O0
I/O1
I/O2
OE
A17
A16
A13
CE
A9
18
17
19
20
GND
I/O7
I/O3
I/O6
VCC
A10
A11
NC
NC
A10
Top View
TSOP
WE
1
2
3
4
5
6
7
8
9
10
11
14
31
32
36
35
34
33
37
40
39
38
12
13
41
44
43
42
16
15
29
30
VCC
A5
A6
A7
A8
A0
A1
VSS
A17
A2
CE
I/O0
A3
A4
18
17
20
19
I/O1
27
28
25
26
22
21
23
24
VSS
I/O2
I/O3
A16
A15
VCC
OE
I/O7
I/O6
I/O5
I/O4
A14
A13
A12
A11
A9
A10
NC
NC
NC
NC
NC
NC
NC
A18
NC
NC
NC
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