CYM1851V33P6-25C [CYPRESS]
SRAM Module, 1MX32, 25ns, CMOS, PSMA72, ANGLED, PLASTIC, SIMM-72;
| 型号： | CYM1851V33P6-25C |
| 厂家： | 
CYPRESS |
| 描述： | SRAM Module, 1MX32, 25ns, CMOS, PSMA72, ANGLED, PLASTIC, SIMM-72 静态存储器 内存集成电路 |
| 文件： | 总8页 (文件大小：205K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
33
fax id: 2052
PRELIMINARY
CYM1851V33
1,024K x 32 3.3V Static RAM Module
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-
Features
• High-density 3.3V 32-megabit SRAM module
bination of multiple bytes through proper use of selects.
• 32-bit Standard Footprint supports densities from
16K x 32 through 1M x 32
• High-speed SRAMs
The CYM1851V33 is designed for use with standard 72-pin
SIMM sockets. The pinout is downward compatible with the
64-pin JEDEC ZIP/SIMM module family (CYM1821,
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.
— Access time of 12 ns
• Low active power
— 3.3W (max.) at 12 ns
• 72 pins
• Available in ZIP, SIMM, or angled SIMM format
Functional Description
Presence detect pins (PD −PD ) are used to identify module
0
3
memory density in applications where modules with alternate
word depths can be interchanged.
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
Logic Block Diagram
Pin Configuration
ZIP/SIMM
Top View
PD - GND
0
PD - OPEN
NC
PD
1
3
5
1
NC
3
PD
0
A0-A19
2
4
PD - GND
2
2
PD
20
GND
PD - OPEN
3
OE
6
8
7
9
PD
1
8
I/O
0
WE
I/O
I/O
1
10
12
14
16
18
20
22
24
26
28
30
32
11
13
15
17
19
21
23
25
27
29
31
I/O
I/O
I/O
9
10
11
I/O
I/O
3
2
1M x 4
SRAM
1M x 4
SRAM
I/O4–I/O7
I/O −I/O
0
3
V
4
4
4
4
4
CC
7
8
9
4
A
0
A
A
1
2
A
A
I/O
CS
A
1
I/O
I/O
I/O
I/O
12
13
14
15
I/O
I/O
I/O
1M x 4
SRAM
1M x 4
5
I/O12–I/O15
I/O20–I/O23
I/O28–I/O31
I/O −I/O
8
11
SRAM
4
4
4
6
7
WE
GND
CS
2
3
4
33
35
A
15
A
14
CS1
34
36
CS
CS
2
1M x 4
SRAM
1M x 4
SRAM
I/O −I/O
16
19
37
39
41
43
45
47
49
51
53
55
57
59
61
63
65
67
69
4
CS
3
16
38
40
42
44
46
48
50
52
54
56
58
60
62
64
66
68
70
72
A
17
A
OE
I/O
I/O
I/O
I/O
CS
CS
GND
24
25
26
27
I/O
16
I/O
17
1M x 4
SRAM
1M x 4
SRAM
I/O − I/O
I/O
24
27
18
I/O
19
A
3
A
10
A
4
5
A
A
A
11
12
13
A
1851V33–1
V
CC
A
6
I/O
I/O
I/O
I/O
20
21
22
23
I/O
28
29
30
I/O
I/O
I/O
A
31
GND
1851V33–2
18
A
19
71
NC
NC
Cypress Semiconductor Corporation
•
3901 North First Street
•
San Jose
•
CA 95134
•
408-943-2600
Apr 1998 - Revised June 30, 1998
PRELIMINARY
CYM1851V33
Selection Guide
1851V33-12 1851V33-15 1851V33-20
1851V33-25 1851V33-35
Maximum Access Time (ns)
12
15
20
25
35
Maximum Operating Current (mA)
1450
540
1250
520
1100
480
1100
480
1100
480
Maximum Standby Current (mA)
Shaded area contains advance information.
Maximum Ratings
Operating Range
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Ambient
Temperature
Range
V
CC
Storage Temperature ................................. –55°C to +125°C
Commercial
0°C to +70°C
3.3V +10%/
−5%
Ambient Temperature with
Power Applied............................................... –10°C to +85°C
Supply Voltage to Ground Potential ............... –0.5V to +4.6V
DC Voltage Applied to Outputs
in High Z State ................................................ –0.5V to +V
CC
DC Input Voltage............................................ –0.5V to +4.6V
Electrical Characteristics Over the Operating Range
Parameter
Description
Output HIGH Voltage
Output LOW Voltage
Input HIGH Voltage
Input LOW Voltage
Input Load Current
Output Leakage Current
Test Conditions
= Min., I = −4.0 mA
OH
Min.
Max.
Unit
V
V
V
V
2.4
OH
CC
CC
V
= Min., I = 4.0 mA
0.4
+ 0.3
CC
V
OL
OL
V
2.0
–0.3
–16
–10
V
V
IH
IL
V
0.8
+16
V
I
I
I
GND < V < V
CC
µA
µA
mA
mA
mA
mA
mA
mA
mA
IX
I
GND < V < V , Output Disabled
+10
OZ
CC
O
CC
V
Operating Supply
V
= Max., I
= 0 mA, -12
1450
1250
1100
540
CC
CC
OUT
Current
CS < V
f f
N
IL, = MAX
-15
-20, -25, -35
-12
I
Automatic CS Power-Down
Max. V , CS > V ,
CC IH
SB1
SB2
[1]
Current
Min. Duty Cycle = 100%
-15
520
-20, -25, -35
480
I
Automatic CS Power-Down
Max. V , CS > V − 0.2V, V > V − 0.2V,
270
CC
CC
IN
CC
[1]
Current
or V < 0.2V
IN
Shaded area contains advance information.
Capacitance[2]
Parameter
Description
Test Conditions
T = 25°C, f = 1 MHz,
Max.
40
Unit
C
C
C
Input Capacitance (WE, OE, A
Input Capacitance (CS)
Output Capacitance
)
pF
pF
pF
INA
0−19
A
V
= 5.0V
CC
10
INB
8
OUT
Notes:
1. A pull-up resistor to VCC on the CS input is required to keep the device deselected during VCC power-up, otherwise ISB will exceed values given.
2. Tested on a sample basis.
2
PRELIMINARY
CYM1851V33
AC Test Loads and Waveforms
R1 317
R1 317
ALL INPUT PULSES
90%
10%
Ω
Ω
5V
5V
3.0V
GND
90%
10%
OUTPUT
OUTPUT
R2
351
R2
351
Ω
Ω
30 pF
5 pF
5 ns
5 ns
≥
≥
INCLUDING
JIG AND
SCOPE
INCLUDING
JIG AND
SCOPE
1851V33–3
1851V33–4
(a)
(b)
Equivalent to:
THÉVENIN EQUIVALENT
167
Ω
1.73V
OUTPUT
[3]
Switching Characteristics Over the Operating Range
1851V33-12
1851V33-15
Parameter
Description
Min.
Max.
Min.
Max.
Unit
READ CYCLE
t
t
t
t
t
t
t
t
t
t
Read Cycle Time
12
15
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
RC
Address to Data Valid
12
15
AA
Data Hold from Address Change
CS LOW to Data Valid
OE LOW to Data Valid
OE LOW to Low Z
3
3
OHA
ACS
DOE
LZOE
HZOE
LZCS
HZCS
PD
12
7
15
8
0
3
0
3
OE HIGH to High Z
7
8
[4]
CS LOW to Low Z
[4, 5]
CS HIGH to High Z
7
8
CS HIGH to Power-Down
12
15
[6]
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
Write Cycle Time
12
9
15
10
10
0
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
WC
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
Address Set-Up to Write Start
WE Pulse Width
SCS
AW
9
0
HA
1
1
SA
10
7
12
8
PWE
SD
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
1
1
HD
3
3
LZWE
HZWE
[5]
WE LOW to High Z
0
7
0
8
Shaded area contains advance information.
3
PRELIMINARY
CYM1851V33
[3]
Switching Characteristics Over the Operating Range (continued)
1851V33-20
1851V33-25
1851V33-35
Parameter
Description
Min.
20
Max.
Min.
Max.
Min.
Max.
Unit
READ CYCLE
t
t
t
t
t
t
t
t
t
t
Read Cycle Time
25
35
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
RC
Address to Data Valid
Data Hold from Address Change
CS LOW to Data Valid
OE LOW to Data Valid
OE LOW to Low Z
20
25
35
AA
3
3
3
OHA
ACS
DOE
LZOE
HZOE
LZCS
HZCS
PD
20
12
25
15
35
18
0
3
0
3
0
3
OE HIGH to High Z
10
12
15
[4]
CS LOW to Low Z
[4, 5]
CS HIGH to High Z
10
20
12
25
15
35
CS HIGH to Power-Down
[6]
WRITE CYCLE
t
t
t
t
t
t
t
t
t
t
Write Cycle Time
20
17
17
3
25
20
20
3
35
30
30
3
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
WC
CS LOW to Write End
Address Set-Up to Write End
Address Hold from Write End
Address Set-Up to Write Start
WE Pulse Width
SCS
AW
HA
2
2
2
SA
15
12
2
20
15
2
30
20
2
PWE
SD
Data Set-Up to Write End
Data Hold from Write End
WE HIGH to Low Z
HD
3
3
3
LZWE
HZWE
[5]
WE LOW to High Z
0
12
0
12
0
15
Switching Waveforms
[7,8]
Read Cycle No. 1
t
RC
ADDRESS
t
AA
t
OHA
DATA OUT
PREVIOUS DATA VALID
DATA VALID
1851V33–5
Notes:
3. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 to 3.0V, and output loading of the specified
OL/IOH and 30-pF load capacitance.
I
4. At any given temperature and voltage condition, tHZCS is less than tLZCS for any given device. These parameters are guaranteed and not 100% tested.
5. tHZCS and tHZWE are specified with CL = 5 pF as in part (b) of AC Test Loads and Waveforms. Transition is measured ±500 mV from steady-state voltage.
6. The internal write time of the memory is defined by the overlap of CS LOW and WE LOW. Both signals must be LOW to initiate a write and either signal can
terminate a write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge of the signal that terminates the write.
7. WE is HIGH for read cycle.
8. Device is continuously selected, CS = VIL, and OE= VIL
.
4
PRELIMINARY
CYM1851V33
Switching Waveforms (continued)
[7,9]
Read Cycle No. 2
t
RC
CS
t
ACS
OE
t
HZOE
t
DOE
t
HZCS
t
LZOE
HIGH
IMPEDANCE
HIGH IMPEDANCE
DATA VALID
DATA OUT
t
LZCS
t
PD
t
PU
ICC
V
CC
50%
50%
SUPPLY
CURRENT
ISB
1851V33–6
[6]
Write Cycle No. 1 (WE Controlled)
t
WC
ADDRESS
t
SCS
CS
t
t
HA
AW
t
SA
t
PWE
WE
t
t
HD
SD
DATA IN
DATA VALID
t
t
LZWE
HZWE
HIGH IMPEDANCE
DATA OUT
DATA UNDEFINED
1851V33–7
Note:
9. Address valid prior to or coincident with CS transition LOW.
5
PRELIMINARY
CYM1851V33
Switching Waveforms (continued)
[6,10]
Write Cycle No. 2 (CS Controlled)
t
WC
ADDRESS
t
SA
t
SCS
CS
t
t
HA
AW
t
PWE
WE
t
t
HD
SD
DATA IN
DATA VALID
t
HZWE
HIGH IMPEDANCE
DATA OUT
DATA UNDEFINED
1851V33–8
Note:
10. If CS goes HIGH simultaneously with WE HIGH, the output remains in a high-impedance state.
Truth Table
CS WE OE Inputs/Output
Mode
Deselect/Power-Down
Read
H
L
L
L
X
H
L
X
L
High Z
Data Out
Data In
High Z
X
H
Write
H
Deselect
Ordering Information
Speed
Package
Operating
(ns)
Ordering Code
Type
PM04
PM04
PN04
PN04
PZ09
PM04
PM04
PN04
PN04
PZ09
Package Type
72-Pin Plastic SIMM Module
Range
12
CYM1851V33PM-12C
CYM1851V33P8-12C
CYM1851V33PN-12C
CYM1851V33P6-12C
CYM1851V33PZ-12C
CYM1851V33PM-15C
CYM1851V33P8-15C
CYM1851V33PN-15C
CYM1851V33P6-15C
CYM1851V33PZ-15C
Commercial
72-Pin Plastic SIMM Module (gold contacts)
72-Pin Plastic Angled SIMM Module
72-Pin Plastic Angled SIMM Module (gold contacts)
72-Pin Plastic ZIP Module
15
72-Pin Plastic SIMM Module
Commercial
72-Pin Plastic SIMM Module (gold contacts)
72-Pin Plastic Angled SIMM Module
72-Pin Plastic Angled SIMM Module (gold contacts)
72-Pin Plastic ZIP Module
Shaded area contains advance information.
6
PRELIMINARY
CYM1851V33
Ordering Information (continued)
Speed
(ns)
Package
Type
Operating
Range
Ordering Code
Package Type
20
25
35
CYM1851V33PM-20C
CYM1851V33P8-20C
CYM1851V33PN-20C
CYM1851V33P6-20C
CYM1851V33PZ-20C
CYM1851V33PM-25C
CYM1851V33P8-25C
CYM1851V33PN-25C
CYM1851V33P6-25C
CYM1851V33PZ-25C
CYM1851V33PM-35C
CYM1851V33P8-35C
CYM1851V33PN-35C
CYM1851V33P6-35C
CYM1851V33PZ-35C
PM04
PM04
PN04
PN04
PZ09
PM04
PM04
PN04
PN04
PZ09
PM04
PM04
PN04
PN04
PZ09
72-Pin Plastic SIMM Module
Commercial
72-Pin Plastic SIMM Module (gold contacts)
72-Pin Plastic Angled SIMM Module
72-Pin Plastic Angled SIMM Module (gold contacts)
72-Pin Plastic ZIP Module
72-Pin Plastic SIMM Module
Commercial
Commercial
72-Pin Plastic SIMM Module (gold contacts)
72-Pin Plastic Angled SIMM Module
72-Pin Plastic Angled SIMM Module (gold contacts)
72-Pin Plastic ZIP Module
72-Pin Plastic SIMM Module
72-Pin Plastic SIMM Module (gold contacts)
72-Pin Plastic Angled SIMM Module
72-Pin Plastic Angled SIMM Module (gold contacts)
72-Pin Plastic ZIP Module
Document #: 38-M-00090-A
Package Diagrams
72-Pin Plastic SIMM Module PM04
72-Pin Plastic Angled SIMM Module PN04
7
PRELIMINARY
CYM1851V33
Package Diagrams (continued)
72-Pin Plastic ZIP Module PZ09
© Cypress Semiconductor Corporation, 1998. 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. 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.
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