M40SZ100W中文资料LPSRAM的3 V NVRAM监控器数据手册ST规格书

描述 Description

The M40SZ100W 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 VCCinput for an out-of-tolerance condition.

When an invalid VCCcondition 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 VCCpin to the external battery to provide the energy required for data retention. On a subsequent power-up, the SRAM remains write-protected until a valid power condition returns.

特性 Features

• Convert low power SRAMs into NVRAMs
• 3 V operating voltage
• Precision power monitoring and power switching circuitry
• Automatic write-protection when VCCis out-of-tolerance
• Choice of supply voltage and power-fail deselect voltage:
•VCC= 2.7 to 3.6 V; 2.55 V ≤ VPFD≤ 2.70 V
• Reset output (RST) for power on reset
• 1.25 V reference (for PFI/PFO)
• Less than 15 ns chip enable access propagation delay
• Battery low pin (BL)
• RoHS compliant
•Lead-free second level interconnect

简介

M40SZ100W属于集成电路（IC）的监控器。由制造生产的M40SZ100W监控器PMIC 监控器用于监视和/或控制电路中的电压轨，能够连接微控制器以维持一定的功率限值。监控器类型包括电池备用电路、监控器、多电压监控器、电源监控器、稳压器/监控器、复位计时器、定序器、简单复位/上电复位、智能开/关控制器、系统管理器、电压检测器和看门狗电路。