128K x 16 Static RAM
CY7C1011CV33
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
•
CA 95134
•
408-943-2600
Document #: 38-05232 Rev. *B
Revised October 10, 2002
Features
• Pin equivalent to CY7C1011BV33
• High speed
—tAA = 10 ns
• Low active power
— 360 mW (max.)
• Data Retention at 2.0
• Automatic power-down when deselected
• Independent control of upper and lower bits
• Easy memory expansion with CE and OE features
• Available in 44-pin TSOP II, 44-pin TQFP, and 48-ball
VFBGA
Functional Description
The CY7C1011CV33 is a high-performance CMOS Static
RAM organized as 131,072 words by 16 bits.
Writing to the device is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. If Byte Low Enable
(BLE) is LOW, then data from I/O pins (I/O0 through I/O7), is
written into the location specified on the address pins (A0
through A16). If Byte High Enable (BHE) is LOW, then data
from I/O pins (I/O8 through I/O15) is written into the location
specified on the address pins (A0 through A16).
Reading from the device is accomplished by taking Chip
Enable (CE) and Output Enable (OE) LOW while forcing the
Write Enable (WE) HIGH. If Byte Low Enable (BLE) is LOW,
then data from the memory location specified by the address
pins will appear on I/O0 to I/O7. If Byte High Enable (BHE) is
LOW, then data from memory will appear on I/O8 to I/O15. See
the truth table at the back of this data sheet for a complete
description of read and write modes.
The input/output pins (I/O0 through I/O15) are placed in a
high-impedance state when the device is deselected (CE
HIGH), the outputs are disabled (OE HIGH), the BHE and BLE
are disabled (BHE, BLE HIGH), or during a write operation (CE
LOW, and WE LOW).
The CY7C1011CV33 is available in a standard 44-pin TSOP
II package with center power and ground pinout, a 44-pin Thin
Plastic Quad Flatpack (TQFP), as well as a 48-ball fine-pitch
ball grid array (VFBGA) package.
Logic Block Diagram
Pin Configuration
A1
A2
A3
A4
A5
A6
A7
A8
COLUMN
DECODER
INPUT BUFFER
256K x 16
ARRAY
A0
1024 x 4096
I/O0 – I/O7
OE
I/O8 – I/O15
CE
WE
BLE
BHE
WE
1
2
3
4
5
6
7
8
9
10
11
14
31
32
36
35
34
33
37
40
39
38
Top View
TSOP II
12
13
41
44
43
42
16
15
29
30
VCC
A15
A14
A13
A4
A3
OE
VSS
A5
I/O15
A2
CE
I/O2
I/O0
I/O1
BHE
NC
A1
A0
18
17
20
19
I/O3
27
28
25
26
22
21
23
24
NC
VSS
I/O6
I/O4
I/O5
I/O7
A6
A7
BLE
VCC
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
I/O8
A8
A9
A10
A11
A12
A16
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