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参数资料
| 型号： | DS1345WP-150+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC NVSRAM 1MBIT 150NS 34PCM |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 40 |
| 格式 - 存储器： | RAM |
| 存储器类型： | NVSRAM（非易失 SRAM） |
| 存储容量： | 1M (128K x 8) |
| 速度： | 150ns |
| 接口： | 并联 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 34-PowerCap? 模块 |
| 供应商设备封装： | 34-PowerCap 模块 |
| 包装： | 管件 |
DS1345W
POWER-DOWN/POWER-UP TIMING
(T A : See Note 10)
PARAMETER
V C C Fail Detect to CE and
WE Inactive
SYMBOL
t PD
MIN
TYP
MAX
1.5
UNITS
μs
NOTES
11
V CC slew from V TP to 0V
t F
150
μs
V CC Fail Detect to RST
Active
V CC slew from 0V to V TP
V CC Valid to CE and WE
Inactive
V CC Valid to End of Write
Protection
t RPD
t R
t PU
t REC
150
15
2
125
μs
μs
ms
ms
14
V CC Valid to RST Inactive
V CC Valid to BW Valid
t RPU
t BPU
150
200
350
1
ms
s
14
14
BATTERY WARNING TIMING
(T A : See Note 10)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Battery Test Cycle
Battery Test Pulse Width
Battery Test to BW Active
t BTC
t BTPW
t BW
24
1
1
hr
s
s
(T A = +25°C)
PARAMETER
Expected Data
Retention Time
SYMBOL
t DR
MIN
10
TYP
MAX
UNITS
years
NOTES
9
WARNING:
Under no circumstance are negative undershoots, of any amplitude, allowed when device is in battery
backup mode.
NOTES:
1. W E is high for a read cycle.
2. OE = V IH or V IL . If OE = V IH during write cycle, the output buffers remain in a high impedance state.
3. t WP is specified as the logical AND of CE and WE . t WP is measured from the latter of CE or WE
going low to the earlier of CE or WE going high.
4. t DS is measured from the earlier of CE or WE going high.
5. These parameters are sampled with a 5 pF load and are not 100% tested.
6. If the CE low transition occurs simultaneously with or latter than the WE low transition, the output
buffers remain in a high impedance state during this period.
7. If the CE high transition occurs prior to or simultaneously with the WE high transition, the output
buffers remain in high impedance state during this period.
8. If WE is low or the WE low transition occurs prior to or simultaneously with the CE low transition,
the output buffers remain in a high impedance state during this period.
9. Each DS1345W has a built-in switch that disconnects the lithium source until V CC is first applied by
the user. The expected t DR is defined as accumulative time in the absence of V CC starting from the
time power is first applied by the user.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1345WP-150+ | 功能描述:NVRAM 3.3V 1024K NV SRAM w/Battery Monitor RoHS:否 制造商:Maxim Integrated 数据总线宽度:8 bit 存储容量:1024 Kbit 组织:128 K x 8 接口类型:Parallel 访问时间:70 ns 电源电压-最大:5.5 V 电源电压-最小:4.5 V 工作电流:85 mA 最大工作温度:+ 70 C 最小工作温度:0 C 封装 / 箱体:EDIP 封装:Tube |
| DS1345WP-150-IND | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:3.3V 1024k Nonvolatile SRAM with Battery Monitor |
| DS1345Y | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:1024k Nonvolatile SRAM with Battery Monitor |
| DS1345Y/AB | 制造商:未知厂家 制造商全称:未知厂家 功能描述:1024k Nonvolatile SRAM with Battery Monitor |
| DS1345Y-70 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:1024k Nonvolatile SRAM with Battery Monitor |
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