CY7C1019B Datasheet, PDF (1/9 Pages) Cypress Semiconductor – 128K x 8 Static RAM

C1019V33
CY7C1019B/
CY7C10191B
Features
• High speed
— t_AA = 10, 12, 15 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 CY7C1019
Functional Description
The CY7C1019B/10191B 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.
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 CY7C1019B/10191B is available in standard 32-pin
TSOP Type II and 400-mil-wide SOJ packages. Customers
should use part number CY7C10191B when ordering parts
with 10 ns t_AA, and CY7C1019B when ordering 12 and 15 ns
t_AA.
ogic Block Diagram
A₀
A₁
A₂
A₃
A₄
A₅
A₆
A₇
A₈
CE
WE
OE
INPUT BUFFER
512 x 256 x 8
ARRAY
COLUMN
DECODER
POWER
DOWN
Pin Configurations
SOJ / TSOPII
Top View
A₀ 1
32 A₁₆
A_{1 2}
31 A₁₅
A₂ 3
30 _A14
I/O₀
A_{3 4}
29 A₁₃
CE 5
28 _OE
I/O₁
I/O₀ 6
27 _I/O7
I/O₁ 7
26 _I/O6
I/O₂
V_{CC 8}
25 _VSS
V_{SS 9}
24 _VCC
I/O₃
I/O_{2 10}
23 I/O₅
I/O₄
I/O_{3 11}
WE 12
22 I/O₄
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
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-05026 Rev. *A
Revised August 13, 2002