BQ4015 512Kx8 非易失性 SRAM，5% 电压容限
BQ4015 描述
The CMOS bq4015/Y/LY is a nonvolatile 4,194,304-bit static RAM organized as 524,288 words by 8 bits. The integral control circuitry and lithium energy source provide reliable nonvolatility coupled with the unlimited write cycles of standard SRAM.
The control circuitry constantly monitors the single supply for an out-of-tolerance condition. When VCC falls out of tolerance, the SRAM is unconditionally write-protected to prevent an inadvertent write operation.
At this time the integral energy source is switched on to sustain the memory until after VCC returns valid.
The bq4015/Y/LY uses extremely low standby current CMOS SRAMs, coupled with small lithium coin cells to provide nonvolatility without long write-cycle times and the write-cycle limitations associated with EEPROM
|
BQ4015 |
BQ4015Y |
BQ4015LY |
| Supply Voltage(V) |
5 |
3.3 |
5 |
| Memory Density(Kb) |
4096 |
4096 |
4096 |
| Pin/Package |
32DIP MODULE |
32DIP MODULE |
32DIP MODULE |
| Approx. Price (US$) |
30.65 | 1ku |
23.60 | 1ku |
30.65 | 1ku |
| Neg Voltage Tolerance(%) |
5 |
10 |
10 |
BQ4015 特性
- Data Retention for at least 10 Years Without Power
- Automatic Write-Protection During Power-up/Power-Down Cycles
- Conventional SRAM Operation, Including Unlimited Write Cycles
- Internal Isolation of Battery before Power Application
- 5-V or 3.3-V Operation
- Industry Standard 32-Pin DIP Package
BQ4015 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| BQ4015MA-70N |
ACTIVE |
-40 to 85 |
23.60 | 1ku |
DIP MODULE (MA) | 32 |
12 |
|
BQ4015 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| BQ4015MA-70N |
Pb-Free (RoHS) |
Call TI |
N/A for Pkg Type |
BQ4015MA-70N |
BQ4015MA-70N |
BQ4015 应用技术支持与电子电路设计开发资源下载
- BQ4015 数据资料 dataSheet 下载.PDF
- TI 德州仪器NVSRAM（非易失性 SRAM）产品选型与价格 . xls
- PowerPAD™ Thermally Enhanced Package
(PDF 1040 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
- PowerPAD™ Made Easy (PDF 57 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
BQ4015 相关工具
| 名称 |
型号 |
公司 |
工具/软件类型 |
| BQ4015 评估模块 |
BQ4015EVM |
Texas Instruments |
开发电路板/EVM |
