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M93C66

16K/8K/4K/2K/1K/256 (X8/X16) SERIAL MICROWIRE BUS EEPROM

Partnumber Manufacturer Quantity Availability
M93C66 3000 In Stock

Description and Introduction

16K/8K/4K/2K/1K/256 (X8/X16) SERIAL MICROWIRE BUS EEPROM The M93C66 is a 4-Kbit serial Electrically Erasable Programmable Read-Only Memory (EEPROM) from STMicroelectronics.  

### **Key Specifications:**  
- **Memory Size:** 4 Kbit (512 x 8 or 256 x 16)  
- **Interface:** Microwire (3-wire serial interface)  
- **Supply Voltage:** 1.8V to 5.5V  
- **Operating Temperature Range:** -40°C to +85°C (industrial grade)  
- **Write Time:** 5 ms (typical)  
- **Endurance:** 4 million write cycles  
- **Data Retention:** 200 years  
- **Package Options:** SO8, TSSOP8, DFN8  

### **Features:**  
- Byte and word write operations  
- Sequential read function  
- Software write protection  
- Self-timed programming cycle  
- Low power consumption (standby current < 5 µA)  
- Compatible with SPI and Microwire protocols  

### **Applications:**  
- Automotive systems  
- Consumer electronics  
- Industrial controls  
- Medical devices  

This device is commonly used for storing configuration data, calibration settings, and small amounts of non-volatile data in embedded systems.

Application Scenarios & Design Considerations

16K/8K/4K/2K/1K/256 (X8/X16) SERIAL MICROWIRE BUS EEPROM

Alternative Part Number

  • AT93C66 --: Pin-compatible 93C66-series serial EEPROM with the same 4Kbit organization and SPI-like interface, widely available and a direct functional drop-in.
  • CAT93C66 --: Industry-standard 93C66 EEPROM from a different vendor family, same 4096-bit memory and Microwire interface, suitable as a second-source replacement.
  • BR93C66 --: Rohm 93C66-compatible Microwire EEPROM with matching 4Kbit density and pinout, offering an alternative supply source with similar specifications.

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