English
Language : 

CY7C192 Datasheet, PDF (1/10 Pages) Cypress Semiconductor – 64K x 4 Static RAM with Separate I/O
92
CY7C192
Features
• High speed
— 12 ns
• CMOS for optimum speed/power
• Low active power
— 880 mW
• Low standby power
— 220 mW
• TTL-compatible inputs and outputs
• Automatic power-down when deselected
Functional Description
The CY7C192 is a high-performance CMOS static RAM orga-
nized as 65,536 x 4 bits with separate I/O. Easy memory ex-
Logic Block Diagram
I0
I1
I2
I3
INPUT BUFFER
AA10
A2
O0
A3
A4
A5
1024 x 64 x 4
ARRAY
O1
A6
A7
O2
A8
A9
O3
COLUMN
DECODER
POWER
DOWN
64K x 4 Static RAM
with Separate I/O
pansion is provided by active LOW Chip Enable (CE) and
three-state drivers. It has an automatic power-down feature,
reducing the power consumption by 75% when deselected.
Writing to the device is accomplished when the Chip Enable
(CE) and write enable (WE) inputs are both LOW.
Data on the four input pins (I0 through I3) is written into the
memory location specified on the address pins (A0 through
A15).
Reading the device is accomplished by taking the Chip Enable
(CE) LOW while the Write Enable (WE) remains HIGH. Under
these conditions the contents of the memory location specified
on the address pins will appear on the four data output pins.
The output pins stay in high-impedance state when Write En-
able (WE) is LOW, or Chip Enable (CE) is HIGH.
A die coat is used to insure alpha immunity.
Pin Configurations
DIP/SOJ
Top View
A6 1
A7 2
A8 3
A9 4
A10 5
A11 6
A12 7
A13 8
A14 9
A15 10
I0 11
I1 12
CE 13
GND 14
28 VCC
27 A5
26 A4
25 A3
24 A2
23 A1
22 A0
21 I3
20 I2
19 O3
18 O2
17 O1
16 O0
15 WE
C191–2
LCC
Top View
3 2 1 28 27
A9 4
26 A4
A10 5
25 A3
A11 6
24 A2
A12 7
23 A1
A13 8
22 A0
A14 9
21 I3
A15 10
20 I2
I0 11
19 O3
I1
12
18
1314151617
O2
C191–3
7C192 ONLY
CE
WE
C191–1
Selection Guide
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
7C192-12
12
155
30
7C192-15
15
145
30
7C192-20
20
135
30
7C192-25
25
115
30
Cypress Semiconductor Corporation • 3901 North First Street • San Jose • CA 95134 • 408-943-2600
Document #: 38-05047 Rev. **
Revised August 24, 2001
 ▷