M40SZ100W 5V或3V的NVRAM
The M40SZ100Y/W NVRAM Controller is a self-contained device which converts a standard low-power SRAM into a non-volatile memory. A precision voltage reference and comparator monitors the VCC input for an out-of-tolerance condition.
When an invalid VCC condition occurs, the conditioned chip enable output (ECON) is forced inactive to write protect the stored data in the SRAM. During a power failure, the SRAM is switched from the VCC pin to the lithium cell within the SNAPHAT (or external battery for the 16-lead SOIC) to provide the energy required for data retention. On a subsequent power-up, the SRAM remains write protected until a valid power condition returns.
The 28-pin, 330 mil SOIC provides sockets with gold plated contacts for direct connection to a separate SNAPHAT? housing containing the battery. The SNAPHAT housing has gold plated pins which mate with the sockets, ensuring reliable connection. The housing is keyed to prevent improper insertion. This unique design allows the SNAPHAT battery package to be mounted on top of the SOIC package after the completion of the surface mount process which greatly reduces the board manufacturing process complexity of either directly soldering or inserting a battery into a soldered holder. Providing non-volatility becomes a “SNAP.” This feature is also available in the “topless” 16-pin SOIC package (MQ). Insertion of the SNAPHAT housing after reflow prevents potential battery damage due to the high temperatures required for device surface-mounting. The SNAPHAT housing is also keyed to prevent reverse insertion.
M40SZ100W 订购型号
| Ordering Model | Package | Conditioned Chip Enable Outputs(Econ) | RST Threshold(VPFD) | Packing Type |
| typ | typ | |||
| V | ||||
| M40SZ100WMQ6E | SO16 | 1 | 2.6 | Tube |
| M40SZ100WMQ6F | SO16 | 1 | 2.6 | Tape And Reel |
M40SZ100W 产品特性:
- Convert low power SRAMs into NVRAMs
- 5V or 3V operating voltage
- Precision power monitoring and power switching circuitry
- Automatic write-protection when VCC is out-oftolerance
- Choice of supply voltages and power-fail
deselect voltages:
– M40SZ100Y: VCC = 4.5 to 5.5V; 4.20V ≤ VPFD ≤ 4.50V
– M40SZ100W: VCC = 2.7 to 3.6V; 2.55V ≤ VPFD ≤ 2.70V - Reset output (RST) for power on reset
- 1.25V reference (for PFI/PFO)
- Less than 10ns chip enable access propagation delay (at 5V)
- Optional packaging includes a 28-lead SOIC and SNAPHAT? top (to be ordered separately)
- 28-lead SOIC package provides direct connection for a SNAPHAT top which contains the battery(a)
- Battery low pin (BL)
- RoHS compliant
– Lead-free second level interconnect
M40SZ100W 技术支持与电子电路设计开发资源下载
- M40SZ100W 数据手册DataSheet下载.PDF
- 微处理器监控器选型指南
- 相关产品选型(
Excel 文档格式) - ST和竞争对手Atmel、Macronix、Holtek、Oki、Winbond的对照 (产品彩页, PDF)
- 周围半导体机顶盒应用. PDF
- L639x ：在MOSFET和IGBT的SMARTDrive的?解决方案. PDF
- 汽车级稳压器. PDF
- 5相PWM控制器英特尔VR11.1的CPU. PDF
- DC - DC电源转换. PDF
- PM8800A ：集成的PoE供电;设备接口和PWM控制器. PDF
- 汽车级半导体器件. PDF
- 复位及监事交叉参考指南. PDF
- GSR - 开关稳压器模块. PDF