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參數(shù)資料
| 型號(hào)： | DS1609 |
| 英文描述： | Dual Port RAM |
| 中文描述： | 雙口RAM |
| 文件頁(yè)數(shù)： | 1/7頁(yè) |
| 文件大?。?/td> | 81K |
| 代理商： | DS1609 |
DS1609
Dual Port RAM
DS1609
020499 1/7
FEATURES
Totally asynchronous 256–byte dual port memory
Multiplexed address and data bus keeps pin count
low
Dual port memory cell allows random access with
minimum arbitration
Each port has standard independent RAM control sig-
nals
Fast access time
Low power CMOS design
24–pin DIP or 24–pin SOIC surface mount package
Both CMOS and TTL compatible
Operating temperature of –40
°
C to +85
°
C
Standby current of 100 nA @ 25
°
C makes the device
ideal for battery backup or battery operate applica-
tions.
PIN ASSIGNMENT
24–PIDS1609S
See MSection
V
CC
OE
B
CE
B
WE
B
AD0
B
AD1
B
AD2
B
AD3
B
AD4
B
AD5
B
AD6
B
AD7
B
AD7
A
AD6
A
AD5
A
AD4
A
AD3
A
AD2
A
AD1
A
AD0
A
WE
A
CE
A
OE
A
GND
PORT A
24–PIDS1609
See MSection
PORT A
PORT B
V
CC
OE
B
CE
B
WE
B
AD0
B
AD1
B
AD2
B
AD3
B
AD4
B
AD5
B
AD6
B
AD7
B
AD7
A
AD6
A
AD5
A
AD4
A
AD3
A
AD2
A
AD1
A
AD0
A
WE
A
CE
A
OE
A
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
PORT B
PIN DESCRIPTION
AD0–AD7
CE
WE
OE
V
CC
GND
– Port address/data
– Port enable
– Write enable
– Output enable
– +5 volt supply
– Ground
DESCRIPTION
The DS1609 is a random access 256–byte dual port
memory designed to connect two asyncronous ad-
dress/data buses together with a common memory ele-
ment. Both ports have unrestricted access to all
256 bytes of memory, and with modest system disci-
pline no arbitration is required. Each port is controlled
by three control signals: output enable, write enable,
and port enable. The device is packaged in plastic
24–pin DIP and 24–pin SOIC. Output enable access
time of 50 ns is available when operating at 5 volts.
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| DS1615 | Temperature Recorder |
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| DS1615X | Temperature Recorder |
| DS1616 | Temperature and Three Input MUX’ed 8-bit Data Recorder |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1609-35 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 Dual-Port SRAM |
| DS1609-50 | 功能描述:RAM其它 RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| DS1609-50+ | 功能描述:RAM其它 Dual Port RAM RoHS:否 制造商:Freescale Semiconductor 封裝:Tray |
| DS1609N-35 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 Dual-Port SRAM |
| DS1609N-50 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:x8 Dual-Port SRAM |
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