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M93S66-WMN6P from STM,ST Microelectronics

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M93S66-WMN6P

Manufacturer: STM, ST

4Kbit, 2Kbit and 1Kbit (16-bit wide) MICROWIRE Serial Access EEPROM with Block Protection

Partnumber Manufacturer Quantity Availability
M93S66-WMN6P,M93S66WMN6P STM, ST 1146 In Stock

Description and Introduction

4Kbit, 2Kbit and 1Kbit (16-bit wide) MICROWIRE Serial Access EEPROM with Block Protection The **M93S66-WMN6P** is a serial SPI bus EEPROM manufactured by **STMicroelectronics (STM)**. Below are the key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Manufacturer:**  
- **STMicroelectronics (STM)**  

### **Specifications:**  
- **Memory Type:** EEPROM  
- **Memory Size:** 4Kbit (512 x 8 bits or 256 x 16 bits)  
- **Interface:** **SPI (Serial Peripheral Interface)**  
  - Supports SPI modes 0 and 3  
- **Operating Voltage:**  
  - **1.8V to 5.5V** (wide voltage range)  
- **Speed:**  
  - Up to **5 MHz** clock frequency  
- **Write Cycle Time:**  
  - **5 ms** (typical)  
- **Endurance:**  
  - **4 million write cycles** per byte  
- **Data Retention:**  
  - **40 years** (minimum)  
- **Package:**  
  - **SO-8 (MN)** (150-mil body width)  

### **Descriptions & Features:**  
- **Low Power Consumption:**  
  - Active current: **1 mA** (typical at 5 MHz)  
  - Standby current: **1 µA** (typical)  
- **Software & Hardware Protection:**  
  - **Write protection** via software (block or partial)  
  - **Hardware write protection (WP pin)**  
- **Page Write Mode:**  
  - Allows up to **32 bytes** to be written in a single operation  
- **Extended Temperature Range:**  
  - **-40°C to +85°C** (industrial-grade)  
- **Serial Presence Detect (SPD) Support:**  
  - Used in DDR memory modules for configuration storage  

### **Applications:**  
- Consumer electronics  
- Industrial systems  
- Automotive (non-safety critical)  
- Networking equipment  

This information is based solely on STMicroelectronics' official datasheet for the **M93S66-WMN6P** EEPROM. For detailed electrical characteristics and timing diagrams, refer to the manufacturer’s documentation.

Application Scenarios & Design Considerations

4Kbit, 2Kbit and 1Kbit (16-bit wide) MICROWIRE Serial Access EEPROM with Block Protection

Alternative Part Number

  • AT93C66A-10SU-2.7 --: Pin-compatible 4Kbit Microwire serial EEPROM with same 93C66 organization and 2.7V operation, widely available and directly interchangeable in most designs.
  • CAT93C66VI-GT3 --: 4Kbit Microwire EEPROM in SOIC-8 with compatible instruction set and voltage range, suitable drop-in replacement for the M93S66.
  • BR93L66RF-WE2 --: 4Kbit 3-wire serial EEPROM with matching 93C66 protocol and SOIC-8 package, offering a reliable alternative from a different vendor.

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