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參數(shù)資料
| 型號： | DS1345W |
| 英文描述： | 3.3V 1024k Nonvolatile SRAM with Battery Monitor |
| 中文描述： | 3.3V、1024k非易失SRAM，帶有電池監(jiān)測器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 249K |
| 代理商： | DS1345W |
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071701
FEATURES
10 years minimum data retention in the
absence of external power
Data is automatically protected during power
loss
Power supply monitor resets processor when
V
CC
power loss occurs and holds processor in
reset during V
CC
ramp-up
Battery monitor checks remaining capacity
daily
Read and write access times as fast as 100 ns
Unlimited write cycle endurance
Typical standby current 50 μA
Upgrade for 128k x 8 SRAM, EEPROM or
Flash
Lithium battery is electrically disconnected to
retain freshness until power is applied for the
first time
Optional industrial temperature range of
-40°C to +85°C, designated IND
PowerCap Module (PCM) package
-
Directly surface-mountable module
-
Replaceable snap-on PowerCap provides
lithium backup battery
-
Standardized pinout for all nonvolatile
SRAM products
-
Detachment feature on PowerCap allows
easy removal using a regular screwdriver
PIN ASSIGNMENT
PIN DESCRIPTION
A0-A16
DQ0-DQ7
CE
WE
OE
RST
BW
V
CC
GND
NC
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Reset Output
- Battery Warning Output
- Power (+3.3 Volts)
- Ground
- No Connect
DESCRIPTION
The DS1345W 3.3V 1024k Nonvolatile SRAM is a 1,048,576-bit, fully static, nonvolatile SRAM
organized as 131,072 words by 8 bits. Each NV SRAM has a self-contained lithium energy source and
control circuitry, which 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. Additionally, the DS1345W has dedicated circuitry for monitoring the
status of V
CC
and the status of the internal lithium battery. DS1345W devices in the PowerCap Module
package are directly surface mountable and are normally paired with a DS9034PC PowerCap to form a
complete Nonvolatile SRAM module. The devices can be used in place of 128k x 8 SRAM, EEPROM or
Flash components.
DS1345W
3.3V 1024k Nonvolatile SRAM
with Battery Monitor
www.maxim-ic.com
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34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
BW
A15
A16
RST
V
CC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
GND V
BAT
34-Pin PowerCap Module (PCM)
(Uses DS9034PC PowerCap)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1345WP-100-IND | 3.3V 1024k Nonvolatile SRAM with Battery Monitor |
| DS1345WP-150 | 3.3V 1024k Nonvolatile SRAM with Battery Monitor |
| DS1345WP-150-IND | 3.3V 1024k Nonvolatile SRAM with Battery Monitor |
| DS1350AB | 4096k Nonvolatile SRAM with Battery Monitor |
| DS1350ABP-70-IND | Circular Connector; MIL SPEC:MIL-C-5015; Body Material:Metal; Series:GTS; No. of Contacts:19; Connector Shell Size:24; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1345WP-100 | 功能描述:NVRAM 3.3V 1024K NV SRAM w/Battery Monitor RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(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 |
| DS1345WP-100+ | 功能描述:NVRAM 3.3V 1024K NV SRAM w/Battery Monitor RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(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 |
| DS1345WP-100IND | 功能描述:NVRAM 3.3V 1024K NV SRAM w/Battery Monitor RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(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 |
| DS1345WP-100-IND | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:3.3V 1024k Nonvolatile SRAM with Battery Monitor |
| DS1345WP-100IND+ | 功能描述:NVRAM 3.3V 1024K NV SRAM w/Battery Monitor RoHS:否 制造商:Maxim Integrated 數(shù)據(jù)總線寬度:8 bit 存儲容量:1024 Kbit 組織:128 K x 8 接口類型:Parallel 訪問時(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 |
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