CY7C1018BV33 Datasheet, PDF (1/9 Pages) Cypress Semiconductor – 128K x 8 Static RAM

019V 33
CY7C1019BV33
CY7C1018BV33
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 and/or
CY7C1018V33
Functional Description
The CY7C1019BV33/CY7C1018BV33 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 driv-
ers. 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 standard 32-pin TSOP
Type II and 400-mil-wide package. The CY7C1018BV33 is
available in a standard 300-mil-wide package.
Pin Configurations
SOJ / TSOPII
Top View
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
A₈
CE
WE
OE
INPUT BUFFER
512 x 256 x 8
ARRAY
COLUMN
DECODER
POWER
DOWN
A_{0 1}
32 A₁₆
A_{1 2}
31 A₁₅
A_{2 3}
30 _A14
I/O0
A_{3 4}
29 A₁₃
CE 5
28 _OE
I/O1
I/O₀ 6
27 _I/O7
I/O2
I/O₁ 7
V_CC 8
26 _I/O6
25 _VSS
I/O3
V_{SS 9}
24 _VCC
I/O_{2 10}
23 I/O₅
I/O4
I/O_{3 11}
22 I/O₄
WE 12
21 ^A12
I/O5
A_{4 13}
20 ^A11
A_{5 14}
19 ^A10
I/O6
A_{6 15}
18 ^A9
A₇ 16
17 A₈
I/O7
Selection Guide
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
7C1019BV33-10
7C1018BV33-10
7C1019BV33-12
7C1018BV33-12
7C1019BV33-15
7C1018BV33-15
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
June 11, 2001