cym1465a Cypress Semiconductor Corporation., cym1465a Datasheet

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cym1465a

Manufacturer Part Number
cym1465a
Description
512k X 8 Pdip Static Ram Semiconductor
Manufacturer
Cypress Semiconductor Corporation.
Datasheet

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65A
Features
Functional Description
The CYM1465A is a high-performance CMOS static RAM or-
ganized as 512K 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
Selection Guide
Cypress Semiconductor Corporation
Document #: 38-05269 Rev. **
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current ( A)
• 4.5V–5.5V operation
• CMOS SRAM for optimum speed and power
• Low active power (165 mW max.)
• Low standby power (L Version)—(110 W max)
• 2V data retention (L Version)
• JEDEC-compatible pinout
• 32-pin, 0.6-inch-wide DIP package
• TTL-compatible inputs and outputs
Logic Block Diagram
CE
WE
OE
A
A
A
A
A
A
A
A
A
A
0
1
4
5
6
7
12
14
16
17
INPUT BUFFER
512 x 256 x 8
ARRAY
DECODER
COLUMN
POWER
DOWN
3901 North First Street
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
0
1
2
3
4
5
6
7
an automatic power-down feature that reduces power con-
sumption by more than 99% when deselected.
Writing to the SRAM is accomplished when the chip select
(CS) and write enable (WE) inputs are both LOW. Data on the
eight input/output pins (I/O
written into the memory location specified on the address pins
(A
taking chip select (CE) and output enable (OE) LOW while
write enable (WE) remains inactive or HIGH. Under these con-
ditions, the contents of the memory location specified on the
address pins (A
priate data input/output pins (I/O
put/output pins (I/O0 through I/O7) are placed in a high imped-
ance 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 CYM1465A is available in a 32-pin 600-mil wide body
PDIP package.
0
through A
512K x 8 PDIP Static RAM
San Jose
18
CYM1465A-70
). Reading from the device is accomplished by
0
through A
70
20
20
Pin Configuration
0
18
GND
through I/O
I/O
I/O
I/O
A
A
A
A
CA 95134
) will appear on the eight appro-
A
A
A
A
A
A
A
A
18
16
14
12
7
6
5
4
3
2
1
0
0
1
2
0
through I/O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Revised March 15, 2002
S
Top View
7
) of the device is then
CYM1465A-85
DIP
CYM1465A
7
85
20
20
).The eight in-
408-943-2600
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
V
A
A
WE
A
A
A
A
OE
A
CE
I/O
I/O
I/O
I/O
I/O
CC
15
17
13
8
9
11
10
7
6
5
4
3

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cym1465a Summary of contents

Page 1

... I/O7) are placed in a high imped- ance 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 CYM1465A is available in a 32-pin 600-mil wide body PDIP package. I/O 0 I/O 1 ...

Page 2

... MHz 5.0V CC 1.847 GND INCLUDING JIG AND SCOPE (b) 1.76V = 30 pF for 70-ns speed. L CYM1465A Ambient Temperature +70 C – +85 C CYM1465A Min. Max. 2.4 0.4 2 –0.3 0.8 –1 +1 – 1.5 20 Max ALL INPUT PULSES 90% 10% < ...

Page 3

... CYM1465A-70 Description Min. [3] [3] [3] Over the Operating Range (L Version Only) Test Conditions No Input may exceed Vcc+0. 3.0V > V – 0.3V > V – 0. < 0.3V IN CYM1465A CYM1465A-85 Max. Min. Max ...

Page 4

... Device is continuously selected, CE Address valid prior to or coincident with CE transition LOW. Document #: 38-05269 Rev. ** DATA RETENTION MODE 3.0V V > CDR OHA ACE t DOE t LZOE . CYM1465A 3. DATA VALID t HZOE t HZCE IMPEDANCE DATA VALID HIGH Page ...

Page 5

... L X Data In Write Word High Z Deselect Document #: 38-05269 Rev SCE PWE t DATA VALID t HZWE [4, SCE PWE t SD DATA VALID t HZWE Mode CYM1465A LZWE HIGH IMPEDANCE HIGH IMPEDANCE Page ...

Page 6

... Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. Package Name Package Type P19 32-Pin DIP Module P19 32-Pin DIP Module P19 32-Pin DIP Module P19 32-Pin DIP Module 32-Lead (600-Mil) Molded DIP P19 CYM1465A Operating Range Commercial Industrial Commercial Industrial 51-85018-*A Page ...

Page 7

... Revision History Document Title: CYM1465A 512K x 8 PDIP Static RAM Document Number: 38-05269 ISSUE REV. ECN NO. DATE ** 114171 3/19/02 Document #: 38-05269 Rev. ** ORIG. OF CHANGE DESCRIPTION OF CHANGE DSG Change from Spec number: 38-M-00036 to 38-05269 CYM1465A Page ...

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