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參數資料
| 型號： | CYM1465 |
| 廠商： | Cypress Semiconductor Corp. |
| 英文描述： | 512K x 8 SRAM Module(512K x 8 靜態RAM模塊) |
| 中文描述： | 為512k × 8的SRAM模塊（為512k × 8靜態內存模塊） |
| 文件頁數： | 1/6頁 |
| 文件大小： | 138K |
| 代理商： | CYM1465 |
512K x 8 SRAM Module
CYM1465
Cypress Semiconductor Corporation
3901 North First Street
San Jose
CA 95134
408-943-2600
January 1991 – Revised January 1995
1CYM1465
Features
High-density 4-megabit SRAM module
High-speed CMOS SRAMs
—Access time of 70 ns
Low active power
—605 mW (max.)
2V data retention (L Version)
JEDEC-compatible pinout
32-pin, 0.6-inch-wide DIP package
TTL-compatible inputs and outputs
Low profile
—Max. height of 0.27 in.
Small PCB footprint
—0.98 sq. in.
Functional Description
The CYM1465 is a high-performance 4-megabit static RAM
module organized as 512K words by 8 bits. This module is
constructed using four 128K x 8 RAMs mounted on a substrate
with pins. A decoder is used to interpret the higher-order ad-
dresses (A
17
and A
18
) and to select one of the four RAMs.
Writing to the module is accomplished when the chip select
(CS) and write enable (WE) inputs are both LOW. Data on the
eight input/output pins (I/O
0
through I/O
7
) of the device is writ-
ten into the memory location specified on the address pins (A
0
through A
18
). Reading the device is accomplished by taking
chip select and output enable (OE) LOW while write enable
remains inactive or HIGH. Under these conditions, the con-
tents of the memory location specified on the address pins (A
0
through A
18
) will appear on the eight appropriate data in-
put/output pins (I/O
0
through I/O
7
).
The input/output pins remain in a high-impedance state unless
the module is selected, outputs are enabled, and write enable
is HIGH.
Logic Block Diagram
Pin Configuration
1465–1
1465–2
Top View
DIP
25
24
26
27
28
29
30
31
32
23
22
21
20
19
18
17
0
I/O
I/O
7
128K x 8
SRAM
1 OF 4
DECODER
128K x 8
SRAM
128K x 8
SRAM
128K x 8
SRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
S
A
18
A
16
A
14
A
12
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
I/O
0
I/O
1
I/O
2
GND
V
CC
A
15
A
17
WE
A
13
A
8
A
9
A
11
OE
A
10
CS
I/O
7
I/O
6
I/O
5
I/O
4
I/O
3
A
0
A
16
WE
OE
A
17
A
18
CS
Selection Guide
1465-70
70
110
12
1465-85
85
110
12
1465-100
100
110
12
1465-120
120
110
12
1465-150
150
110
12
Maximum Access Time (ns)
Maximum Operating Current (mA)
Maximum Standby Current (mA)
相關PDF資料 |
PDF描述 |
|---|---|
| CYM1622 | 64K x 16 Static RAM Module(64K x 16靜態RAM模塊) |
| CYM1720 | 32K x 24 Static RAM Module(32K x24 靜態RAM模塊) |
| CYM1730 | 64K x 24 Static RAM Module(64K x 24 靜態RAM模塊) |
| CYM1821 | 16K x 32 Static RAM Module(16K x 32 靜態RAM模塊) |
| CYM1831 | 64K x 32 Static RAM Module |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CYM1465A | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:512K x 8 PDIP Static RAM |
| CYM1465AL | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:Memory |
| CYM1465ALPD-70C | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:512K x 8 PDIP Static RAM |
| CYM1465ALPD-70I | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:512K x 8 PDIP Static RAM |
| CYM1465ALPD-85C | 制造商:CYPRESS 制造商全稱:Cypress Semiconductor 功能描述:512K x 8 PDIP Static RAM |
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