AT93C46DN-SH-T

Function

The AT93C46DN-SH-T is a serial electrically erasable programmable read-only memory (EEPROM) from 

Microchip (Atmel). It belongs to the 93Cxx family and features a 2-wire Serial Peripheral Interface (SPI) for communication. 

Key functions include:

1. Memory Organization:
   • 1 Kbit capacity (128 words × 8 bits or 256 words × 4 bits, configurable via the ORG pin).
   • Supports byte-wise or word-wise programming and full-chip erase.
2. Serial Interface:
   • Communicates via a standard SPI protocol (Clock, Data In, Data Out, Chip Select), enabling simple integration with microcontrollers.
   • High-speed operation: up to 10 MHz clock frequency for fast data transfer.
3. Data Retention and Endurance:
   • Non-volatile storage: Data retained for over 100 years without power.
   • High endurance: Up to 1,000,000 write/erase cycles, suitable for frequent updates.
4. Power and Voltage:
   • Operates over a 2.7V to 5.5V voltage range, making it compatible with both 3.3V and 5V systems.
   • Low power consumption: 1 mA active current, 100 nA standby current.
5. Security Features:
   • Write Protection (WP): Configurable via the WP pin to prevent accidental writes or data corruption.
   • Data Security: Optional write-protect mode for critical data segments.
6. Package and Thermal Performance:
   • Housed in a 8-pin SOIC (Small Outline Integrated Circuit) package, suitable for surface-mount applications.
   • Operating temperature range: -40°C to +85°C (industrial grade).

Applications

1. Consumer Electronics:
   • Storing user settings (e.g., volume preferences, display configurations) in devices like TVs, audio systems, and smart home appliances.
   • Retaining firmware version information or calibration data in wearables and IoT sensors.
2. Industrial and Automotive Systems:
   • Saving configuration parameters (e.g., sensor calibration values, motor control settings) in industrial controllers or motor drives.
   • Storing diagnostic data or fault logs in automotive ECUs (Electronic Control Units) or dashboard systems.
3. Communication and Networking Equipment:
   • Storing MAC addresses, device serial numbers, or network configuration settings in routers, switches, or modems.
   • Backup storage for real-time clock (RTC) data or system logs in network edge devices.
4. Medical Devices:
   • Recording patient-specific settings or device usage history in medical instruments (e.g., infusion pumps, diagnostic tools).
   • Storing calibration data for sensors in portable medical devices.
5. Embedded Systems:
   • Non-volatile storage for microcontroller (MCU) projects requiring small data storage (e.g., PID controller parameters, user credentials).
   • Bootloader configuration or factory calibration data in embedded devices.
6. Automotive Aftermarket:
   • Programming custom settings in aftermarket ECUs, GPS trackers, or infotainment systems

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