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M40SZ100WMQ6F from ST,ST Microelectronics

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M40SZ100WMQ6F

Manufacturer: ST, STM

3 V NVRAM supervisor for LPSRAM

Partnumber Manufacturer Quantity Availability
M40SZ100WMQ6F ST, STM 4254 In Stock

Description and Introduction

3 V NVRAM supervisor for LPSRAM The **M40SZ100WMQ6F** is a **serial NOR Flash memory** device manufactured by **STMicroelectronics (STM)**. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 4 Mbit (512 KB)  
- **Interface:** **SPI (Serial Peripheral Interface)**  
- **Operating Voltage:** **2.7V to 3.6V**  
- **Speed:**  
  - **104 MHz (maximum clock frequency)**  
  - **Fast read operations**  
- **Sector Architecture:**  
  - **Uniform 4 KB sectors**  
  - **Erase capability (sector, block, or full chip)**  
- **Temperature Range:** **Industrial (-40°C to +85°C)**  
- **Package:** **WSON8 (8-lead, 6x5 mm)**  
- **Endurance:** **100,000 write/erase cycles per sector**  
- **Data Retention:** **20 years**  

### **Descriptions & Features:**  
- **High-Performance SPI NOR Flash:** Optimized for **fast read operations** and **low-power consumption**.  
- **Quad-SPI (QSPI) Support:** Enables **faster data transfer** in **Quad I/O mode**.  
- **Flexible Erase Options:** Supports **sector erase (4 KB), block erase (32 KB, 64 KB), and full-chip erase**.  
- **Deep Power-Down Mode:** Reduces **standby current** for power-sensitive applications.  
- **Security Features:**  
  - **Software and hardware write protection**  
  - **OTP (One-Time Programmable) area** for secure data storage.  
- **Industrial-Grade Reliability:** Suitable for **automotive, industrial, and consumer applications**.  
- **Compliant with JEDEC Standards:** Ensures compatibility with industry-standard SPI interfaces.  

This device is commonly used in **embedded systems, IoT devices, automotive electronics, and firmware storage applications**.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

3 V NVRAM supervisor for LPSRAM

Alternative Part Number

  • DS1225AD-150+ --: Nonvolatile SRAM with integrated battery backup in the same 28-pin DIP footprint, functionally equivalent to the M40SZ100W timekeeper SRAM and widely available.
  • M48Z35Y-70PC1 --: ST ZEROPOWER nonvolatile SRAM module with comparable capacity and battery-backed retention, suitable as a direct functional replacement in the same application.
  • DS1245Y-100+ --: Battery-backed nonvolatile SRAM with similar organization and pinout, offering a reliable alternative when the original ST part is unavailable.
  • DS1307Z+ --: I2C real-time clock with 64-byte NV SRAM, functionally similar to the M40SZ100W timekeeper/NV SRAM device and widely available in a small SOIC package.
  • BQ32000DR --: Low-cost I2C RTC with integrated crystal compensation and battery backup, suitable replacement for timekeeping plus nonvolatile storage functions.
  • PCF8563T --: Popular I2C real-time clock/calendar in SOIC-8, easy drop-in for designs needing timekeeping with low power consumption.

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