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M93C46 from ST,ST Microelectronics

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M93C46

Manufacturer: ST, STMicroelectronics

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

Partnumber Manufacturer Quantity Availability
M93C46 ST, STMicroelectronics 984 In Stock

Description and Introduction

16K/8K/4K/2K/1K/256 (X8/X16) SERIAL MICROWIRE BUS EEPROM The M93C46 is a serial Electrically Erasable Programmable Read-Only Memory (EEPROM) manufactured by STMicroelectronics. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Memory Size:** 1Kbit (128 x 8 or 64 x 16)  
- **Interface:** Microwire (3-wire serial interface)  
- **Supply Voltage:**  
  - 2.5V to 5.5V (M93C46-W)  
  - 1.8V to 5.5V (M93C46-R)  
- **Operating Temperature Range:**  
  - Industrial: -40°C to +85°C  
  - Automotive: -40°C to +125°C (AEC-Q100 qualified)  
- **Write Time:** 5ms (typical)  
- **Endurance:** 4 million write cycles  
- **Data Retention:** 200 years  
- **Package Options:** SO8, TSSOP8, UFDFPN8  

### **Descriptions:**
- The M93C46 is a low-power EEPROM with a serial interface, suitable for storing configuration data in embedded systems.  
- It supports both 8-bit and 16-bit organization modes.  
- Features a software-controlled write protection mechanism.  

### **Features:**
- **Serial Microwire Interface:** Simple 3-wire communication (CS, SK, DI/DO).  
- **Sequential Read Mode:** Allows faster data access.  
- **Write Protection:** Enabled/disabled via software commands.  
- **Low Power Consumption:**  
  - Standby current: 1μA (max)  
  - Active current: 2mA (max)  
- **Self-Timed Programming Cycle:** No external timing required.  
- **ESD Protection:** > 4000V (Human Body Model).  

This information is based on the manufacturer's datasheet for the M93C46 EEPROM from STMicroelectronics.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • AT93C46 --: Pin-compatible 1Kbit Microwire serial EEPROM with the same 93C46 organization and interface, widely available and a direct functional drop-in.
  • CAT93C46 --: 1Kbit Microwire EEPROM matching the M93C46 pinout and command set, suitable as a direct replacement with similar voltage range.
  • BR93C46 --: 1Kbit 3-wire serial EEPROM with compatible organization and pinout, offering an alternative source for the same function.

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