cym1851v33 Cypress Semiconductor Corporation., cym1851v33 Datasheet

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cym1851v33

Manufacturer Part Number
cym1851v33
Description
1,024k 3.3v Static Module
Manufacturer
Cypress Semiconductor Corporation.
Datasheet
3
Features
Functional Description
The CYM1851V33 is a 3.3V high-performance 32-megabit
static RAM module organized as 1,024K words by 32 bits. This
module is constructed from eight 1,024K x 4 SRAMs in SOJ
Cypress Semiconductor Corporation
• High-density 3.3V 32-megabit SRAM module
• 32-bit Standard Footprint supports densities from
• High-speed SRAMs
• Low active power
• 72 pins
• Available in ZIP, SIMM, or angled SIMM format
16K x 32 through 1M x 32
— Access time of 12 ns
— 3.3W (max.) at 12 ns
Logic Block Diagram
A
CS
CS
CS
CS
0
WE
OE
-A
1
2
3
4
19
20
1M x 4
1M x 4
1M x 4
1M x 4
SRAM
SRAM
SRAM
SRAM
4
4
4
4
I/O
I/O
I/O
I/O
0
8
16
24
3901 North First Street
I/O
I/O
I/O
I/O
3
11
PRELIMINARY
19
27
1,024K x 32 3.3V Static RAM Module
PD
PD
PD
PD
1M x 4
1M x 4
1M x 4
1M x 4
SRAM
SRAM
SRAM
SRAM
0
1
2
3
packages mounted on an epoxy laminate substrate. Four chip
selects are used to independently enable the four bytes. Read-
ing or writing can be executed on individual bytes or any com-
bination of multiple bytes through proper use of selects.
The CYM1851V33 is designed for use with standard 72-pin
SIMM sockets. The pinout is downward compatible with the
64-pin
CYM1831, CYM1836, and CYM1841). Thus, a single mother-
board design can be used to accommodate memory depth
ranging from 16K words (CYM1821) to 1,024K words
(CYM1851). The CYM1851V33 is offered in vertical and an-
gled SIMM configurations and both are available with either
tin-lead or 10 micro-inches of gold flash on the edge contacts.
Presence detect pins (PD
memory density in applications where modules with alternate
word depths can be interchanged.
- GND
- OPEN
- GND
- OPEN
1851V33–1
4
4
4
4
JEDEC
I/O
I/O
I/O
I/O
San Jose
20
12
28
4
–I/O
–I/O
–I/O
–I/O
Pin Configuration
7
23
15
ZIP/SIMM
31
1851V33–2
0
Apr 1998 - Revised June 30, 1998
PD
CA 95134
GND
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
GND
3
module
PD
PD
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
V
CS
CS
) are used to identify module
WE
A
A
A
A
A
A
A
NC
NC
CC
A
A
A
14
16
16
17
18
19
10
11
12
13
20
21
22
23
19
3
0
0
1
2
3
7
8
9
4
5
6
7
1
3
CYM1851V33
ZIP/SIMM
Top View
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
66
68
70
72
family
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
65
67
69
71
1
3
5
7
9
408-943-2600
OE
(CYM1821,
NC
PD
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
A
I/O
I/O
I/O
I/O
A
A
A
V
A
I/O
I/O
I/O
I/O
A
NC
0
1
2
15
17
3
4
5
CC
6
18
2
1
8
9
10
11
12
13
14
15
24
25
26
27
28
29
30
31
2
4

Related parts for cym1851v33

cym1851v33 Summary of contents

Page 1

... CYM1831, CYM1836, and CYM1841). Thus, a single mother- board design can be used to accommodate memory depth ranging from 16K words (CYM1821) to 1,024K words (CYM1851). The CYM1851V33 is offered in vertical and an- gled SIMM configurations and both are available with either tin-lead or 10 micro-inches of gold flash on the edge contacts. ...

Page 2

... CC IH Min. Duty Cycle = 100% -15 -20, -25, -35 Max > V 0.2V < 0.2V IN Test Conditions ) MHz 5. CYM1851V33 1851V33-20 1851V33-25 1851V33- 1100 1100 480 480 Ambient Temperature +70 C 3.3V 10%/ Min. Max. 2.4 0.4 2 0.3 CC –0.3 0.8 –16 +16 – ...

Page 3

... WE LOW to High Z HZWE Shaded area contains advance information. PRELIMINARY R1 317 5V 3.0V R2 GND 351 5 pF INCLUDING JIG AND 1851V33–3 SCOPE (b) [3] Description [4, 5] [5] 3 CYM1851V33 ALL INPUT PULSES 90% 90% 10 1851V33–4 1851V33-12 1851V33-15 Min. Max. Min. Max ...

Page 4

... OHA is less than t for any given device. These parameters are guaranteed and not 100% tested. HZCS LZCS . IL 4 CYM1851V33 1851V33-25 1851V33-35 Min. Max. Min. Max. Unit ...

Page 5

... Note: 9. Address valid prior to or coincident with CS transition LOW. PRELIMINARY DOE LZOE DATA VALID 50 SCS PWE t SD DATA VALID t HZWE 5 CYM1851V33 t HZOE t HZCS HIGH IMPEDANCE t PD 50% 1851V33– LZWE HIGH IMPEDANCE 1851V33–7 ICC ISB ...

Page 6

... Ordering Information Speed Package (ns) Ordering Code Type 12 CYM1851V33PM-12C PM04 CYM1851V33P8-12C PM04 CYM1851V33PN-12C PN04 CYM1851V33P6-12C PN04 CYM1851V33PZ-12C PZ09 15 CYM1851V33PM-15C PM04 CYM1851V33P8-15C PM04 CYM1851V33PN-15C PN04 CYM1851V33P6-15C PN04 CYM1851V33PZ-15C PZ09 Shaded area contains advance information. PRELIMINARY SCS PWE t SD DATA VALID t ...

Page 7

... CYM1851V33PM-25C PM04 CYM1851V33P8-25C PM04 CYM1851V33PN-25C PN04 CYM1851V33P6-25C PN04 CYM1851V33PZ-25C PZ09 35 CYM1851V33PM-35C PM04 CYM1851V33P8-35C PM04 CYM1851V33PN-35C PN04 CYM1851V33P6-35C PN04 CYM1851V33PZ-35C PZ09 Document #: 38-M-00090-A Package Diagrams 72-Pin Plastic Angled SIMM Module PN04 PRELIMINARY Package Type 72-Pin Plastic SIMM Module 72-Pin Plastic SIMM Module (gold contacts) ...

Page 8

... The inclusion of Cypress 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. PRELIMINARY 72-Pin Plastic ZIP Module PZ09 CYM1851V33 ...

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