CY7C1019BV33 Datasheet, PDF (1/7 Pages) Cypress Semiconductor – 128K x 8 Static RAM

3
CY7C1019BV33
Features
• High speed
— t_AA = 10 ns
• CMOS for optimum speed/power
• Center power/ground pinout
• Automatic power-down when deselected
• Easy memory expansion with CE and OE options
• Functionally equivalent to CY7C1019V33
Functional Description
The CY7C1019BV33 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 three-state drivers. This
device has an automatic power-down feature that significantly
reduces power consumption when deselected.
Logic Block Diagram
128K x 8 Static RAM
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 speci-
fied 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 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 CY7C1019BV33 is available in a standard 400-mil-wide
package.
Pin Configurations
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
A₈
CE
WE
OE
INPUT BUFFER
512 x 256 x 8
ARRAY
COLUMN
DECODER
POWER
DOWN
I/O0
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
1019BV33–1
SOJ
Top View
A₀ 1
A_{1 2}
A₂ 3
A_{3 4}
CE 5
I/O₀ 6
I/O₁ 7
V_{CC 8}
V_{SS 9}
I/O₂ 10
I/O_{3 11}
WE 12
A_{4 13}
A_{5 14}
A_{6 15}
A₇ 16
32 A₁₆
31 A₁₅
30 _A14
29 A₁₃
28 _OE
27 _I/O7
26 _I/O6
25 _VSS
24 _VCC
23 I/O₅
22 I/O₄
21 A₁₂
20 ^A11
19 ^A10
18 ^A9
17 A₈
1019BV33–2
Selection Guide
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
7C1019BV33-10
7C1019BV33-12 7C1019BV33-15
10
12
15
175
160
145
5
5
5
L
−
0.5
0.5
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
January 19, 2001