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參數(shù)資料
| 型號(hào)： | DS1249W-100-IND |
| 英文描述： | CAPACITOR, CLASS Y2 27NFCAPACITOR, CLASS Y2 27NF; Capacitance:27nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op. |
| 中文描述： | 3.3 2048kb非易失SRAM |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 157K |
| 代理商： | DS1249W-100-IND |
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103102
FEATURES
10 years minimum data retention in the
absence of external power
Data is automatically protected during power
loss
Unlimited write cycles
Low-power CMOS operation
Read and write access times as fast as 100ns
Lithium energy source is electrically
disconnected to retain freshness until power is
applied for the first time
Optional industrial (IND) temperature range
of -40 C to +85 C
JEDEC standard 32-pin DIP package
PIN ASSIGNMENT
PIN DESCRIPTION
A0–A17
DQ0–DQ7
CE
WE
OE
V
CC
GND
NC
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Power (+3.3V)
- Ground
- No Connect
DESCRIPTION
The DS1249W 2048kb nonvolatile (NV) SRAMs are 2,097,152-bit, fully static, NV SRAMs organized as
262,144 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and control circuitry
that constantly monitors V
CC
for an out-of-tolerance condition. When such a condition occurs, the lithium
energy source is automatically switched on and write protection is unconditionally enabled to prevent
data corruption. There is no limit on the number of write cycles that can be executed, and no additional
support circuitry is required for microprocessor interfacing.
DS1249W
3.3V 2048kb Nonvolatile SRAM
www.maxim-ic.com
13
14
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16
1
2
3
4
5
6
7
8
9
10
11
12
31
30
29
28
27
26
25
24
23
22
21
20
32-Pin Encapsulated Package
740mil Extended
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ1
DQ2
GND
DQ0
V
CC
A15
A17
WE
A13
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
32
19
18
17
A16
NC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1249W-150 | CAPACITOR, CLASS Y2 33NFCAPACITOR, CLASS Y2 33NF; Capacitance:33nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op. |
| DS1249W-150-IND | CAPACITOR, CLASS Y2 330NFCAPACITOR, CLASS Y2 330NF; Capacitance:330nF; Voltage rating, AC:250V; Voltage rating, DC:2500V; Capacitor dielectric type:Polypropylene; Series:B81122; Tolerance, +:20%; Tolerance, -:20%; Temp, op. |
| DS1249W | 3.3V 2048kb Nonvolatile SRAM |
| DS1249W | module device DS1249W RELIABILITY REPORT |
| DS1250ABP-70-IND | GT 6C 2#8 4#16 PIN PLUG |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1249W-100IND# | 功能描述:NVRAM 3.3V 2048K NV SRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS1249W-150 | 功能描述:NVRAM 3.3V 2048K NV SRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS1249W-150# | 功能描述:NVRAM 3.3V 2048K NV SRAM RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲(chǔ)容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問(wèn)時(shí)間:70 ns 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 工作電流:85 mA 最大工作溫度:+ 70 C 最小工作溫度:0 C 封裝 / 箱體:EDIP 封裝:Tube |
| DS1249W-150-IND | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3.3V 2048kb Nonvolatile SRAM |
| DS1249Y | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:2048k Nonvolatile SRAM |
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