CYM1831PM-20C Cypress Semiconductor Corp, CYM1831PM-20C Datasheet

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CYM1831PM-20C

Manufacturer Part Number
CYM1831PM-20C
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CYM1831PM-20C

Main Category
SRAM Module
Sub-category
Asynchronous
Module Type
64SIMM Module
Device Core Size
32b
Organization
64Kx32
Total Density
2MBit
Chip Density
256Kb
Access Time (max)
20ns
Package Type
SIMM
Maximum Clock Rate
Not RequiredMHz
Operating Supply Voltage (typ)
5V
Operating Current
960mA
Number Of Elements
8
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Pin Count
64
Mounting
Socket
Lead Free Status / Rohs Status
Not Compliant
Features
Functional Description
The CYM1831 is a high-performance 2-Mbit static RAM mod-
ule organized as 64K words by 32 bits. This module is con-
structed from eight 64K x 4 SRAMs in SOJ packages mounted
Cypress Semiconductor Corporation
Document #: 38-05270 Rev. **
• High-density 2-Mbit SRAM module
• 32-bit standard footprint supports densities from 16K
• High-speed CMOS SRAMs
• Low active power
• SMD technology
• TTL-compatible inputs and outputs
• Low profile
• Small PCB footprint
Logic Block Diagram
x 32 through 1M x 32
— Access time of 15 ns
— 5.3W (max.)
— Max. height of 0.50 in.
— 1.2 sq. in.
A
0
–A
CS
CS
CS
CS
WE
OE
15
1
2
3
4
16
64K x 4
64K x 4
64K x 4
64K x 4
SRAM
SRAM
SRAM
SRAM
4
4
4
4
I/O
I/O
I/O
I/O
0
8
16
24
– I/O
– I/O
– I/O
– I/O
3901 North First Street
3
11
19
27
64K x 4
64K x 4
64K x 4
64K x 4
PD
PD
SRAM
SRAM
SRAM
SRAM
0
1
- OPEN
- GND
on an epoxy laminate board with pins. Four chip selects (CS
CS
bytes. Reading or writing can be executed on individual bytes
or any combination of multiple bytes through proper use of
selects.
Writing to each byte is accomplished when the appropriate
Chip Selects (CS
LOW. Data on the input/output pins (I/O
memory location specified on the address pins (A
A
Reading the device is accomplished by taking the Chip Selects
(CS
(WE) remains HIGH. Under these conditions the contents of
the memory location specified on the address pins will appear
on the data input/output pins (I/O
The data input/output pins stay in the high-impedance state
when Write Enable (WE) is LOW or the appropriate chip se-
lects are HIGH.
Two pins (PD
density in applications where alternate versions of the
JEDEC-standard modules can be interchanged.
15
2
).
N
, CS
64K x 32 Static RAM Module
) LOW and Output Enable (OE) LOW while Write Enable
4
4
4
4
3
I/O
I/O
I/O
I/O
, and CS
San Jose
4
12
20
28
– I/O
0
Pin Configuration
– I/O
– I/O
– I/O
and PD
7
N
4
15
23
31
) are used to independently enable the four
) and Write Enable (WE) inputs are both
1
) are used to identify module memory
CA 95134
GND
GND
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
X
CS
CS
PD
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
V
WE
A
NC
A
A
A
A
).
CC
A
A
A
14
16
17
18
19
10
11
12
13
20
21
22
23
0
0
1
2
3
7
8
9
4
5
6
7
1
3
Revised March 15, 2002
ZIP/SIMM
Top View
X
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
) is written into the
CYM1831
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
61
63
1
3
5
7
9
408-943-2600
GND
PD
I/O
I/O
I/O
I/O
A
A
A
I/O
I/O
I/O
I/O
GND
A
CS
CS
NC
OE
I/O
I/O
I/O
I/O
A
A
A
V
A
I/O
I/O
I/O
I/O
0
CC
0
1
2
15
3
4
5
6
through
1
8
9
10
11
12
13
14
15
24
25
26
27
28
29
30
31
2
4
1
,

Related parts for CYM1831PM-20C

CYM1831PM-20C Summary of contents

Page 1

... SRAM 64K x 4 SRAM Cypress Semiconductor Corporation Document #: 38-05270 Rev. ** 64K x 32 Static RAM Module on an epoxy laminate board with pins. Four chip selects ( and bytes. Reading or writing can be executed on individual bytes or any combination of multiple bytes through proper use of selects ...

Page 2

Selection Guide Maximum Access Time (ns) Maximum Operating Current (mA) Maximum Standby Current (mA) Maximum Ratings (Above which the useful life may be impaired. For user guide- lines, not tested.) Storage Temperature ................................. – +150 C Ambient Temperature ...

Page 3

AC Test Loads and Waveforms R1 481 5V OUTPUT OUTPUT R2 255 30 pF INCLUDING JIG AND SCOPE (a) Equivalent to: THÉ VENIN EQUIVALENT 167 OUTPUT Switching Characteristics Over the Operating Range Parameter Description READ CYCLE t Read Cycle Time ...

Page 4

Switching Waveforms [7, 8] Read Cycle No. 1 ADDRESS DATA OUT PREVIOUS DATA VALID [7, 9] Read Cycle HIGH IMPEDANCE DATA OUT t LZCS SUPPLY CURRENT Notes HIGH ...

Page 5

Switching Waveforms (continued) Write Cycle No. 1 (WE Controlled) ADDRESS DATA IN DATA OUT DATA UNDEFINED Write Cycle No. 2 (CS Controlled) ADDRESS CS WE DATA IN DATA OUT DATA UNDEFINED Note: 10 goes ...

Page 6

... CYM1831PZ–20C 25 CYM1831PM–25C CYM1831PN–25C CYM1831PY–25C CYM1831PZ–25C 35 CYM1831PM–35C CYM1831PN–35C CYM1831PY–35C CYM1831PZ–35C 45 CYM1831PM–45C CYM1831PN–45C CYM1831PY–45C CYM1831PZ–45C Document #: 38-05270 Rev. ** Package Package Name Type PM01 64-Pin Plastic SIMM Module PN01 64-Pin Plastic Angled SIMM Module ...

Page 7

... Document #: 38-05270 Rev. ** © Cypress Semiconductor Corporation, 2002. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user ...

Page 8

... Document Title: CYM1831 64K x 32 Static RAM Module Document Number: 38-05270 Issue REV. ECN NO. Date ** 114171 3/19/02 Document #: 38-05270 Rev. ** Orig. of Change DSG Change from Spec number: 38-M-00018 to 38-05270 CYM1831 Description of Change Page ...

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