CY7C1019V33 Datasheet, PDF (1/7 Pages) Cypress Semiconductor – 128K x 8 Static RAM

3
CY7C1018V33
CY7C1019V33
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
Functional Description
The CY7C1018V33/CY7C1019V33 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.
Writing to the device is accomplished by taking Chip Enable
(CE) and Write Enable (WE) inputs LOW. Data on the eight I/O
Logic Block Diagram
128K x 8 Static RAM
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 CY7C1018V33 is available in a standard 300-mil-wide
SOJ and CY7C1019V33 is available in a standard
400-mil-wide package. The CY7C1018V33 and
CY7C1019V33 are functionally equivalent in all other re-
spects.
Pin Configurations
INPUT BUFFER
A₀
A₁
A₂
A₃
A₄
A₅
A₆
512 x 256 x 8
ARRAY
A₇
A₈
CE
COLUMN
DECODER
WE
OE
Selection Guide
POWER
DOWN
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
L
I/O₀
I/O₁
I/O₂
I/O₃
I/O₄
I/O₅
I/O₆
I/O₇
1019V33–1
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
1019V33–2
7C1019V33-10
10
175
5
−
7C1018V33-12
7C1019V33-12
12
160
5
0.5
7C1018V33-15
7C1019V33-15
15
145
5
0.5
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
October 18, 1999