The part number AT93C46DN-SH-T refers to a serial EEPROM made by Microchip Technology, which is a widely recognized manufacturer of semiconductors, particularly known for microcontrollers and Memory devices.
The AT93C46DN-SH-T specifically corresponds to a 3-wire serial EEPROM with a 1K (1024) bit storage capacity. The package type for this part is typically an 8-pin SOIC (Small Outline Integrated Circuit), which is commonly used for surface-mount applications.
Here is a detailed explanation of the pin functions and the circuit principles:
Package and Pin Functions for AT93C46DN-SH-T:
Packaging Type: 8-pin SOIC Pin Count: 8 Pins
Pinout Table for 8-Pin SOIC Package Pin Number Pin Name Pin Function Description 1 CS (Chip Select) This pin is used to select the device. When low, the chip is active, and when high, it is disabled. 2 DI (Data In) This is the data input pin, where the data to be written into the EEPROM is fed. 3 VCC This is the supply voltage pin, typically connected to a positive voltage source (e.g., +5V or +3.3V). 4 GND Ground pin, which is used to complete the circuit with the ground of the system. 5 DO (Data Out) This pin is used for reading data from the EEPROM. The data read is shifted out on this pin. 6 CLK ( Clock ) This is the clock input pin, where the clock signal is provided to synchronize data input/output. 7 NC (No Connect) This pin is not connected to anything internally and can be left unconnected in a circuit. 8 NC (No Connect) Another unused pin, can also be left unconnected.Explanation of the Circuit Principle:
The AT93C46DN-SH-T is an EEPROM ( Electrical ly Erasable Programmable Read-Only Memory) chip, which stores data in a non-volatile manner. The device uses a serial communication protocol, typically SPI (Serial Peripheral interface ), consisting of Clock, Chip Select, Data Input, and Data Output. The Chip Select (CS) pin is used to activate the EEPROM chip when performing operations. The Clock (CLK) pin synchronizes the data transfer, and both the Data In (DI) and Data Out (DO) pins handle the read/write operations. The EEPROM can be programmed (written) byte-by-byte or read byte-by-byte through this serial interface.FAQ: 20 Common Questions about AT93C46DN-SH-T
Q: What is the memory size of the AT93C46DN-SH-T? A: The AT93C46DN-SH-T has a memory size of 1K (1024) bits, which is equivalent to 128 bytes.
Q: What is the operating voltage range for the AT93C46DN-SH-T? A: The operating voltage range is 2.5V to 5.5V.
Q: How many pins are there in the AT93C46DN-SH-T? A: The AT93C46DN-SH-T has an 8-pin SOIC package.
Q: What is the typical clock speed of the AT93C46DN-SH-T? A: The typical clock speed is up to 2 MHz for standard read and write operations.
Q: What is the main interface used by the AT93C46DN-SH-T? A: The AT93C46DN-SH-T uses a 3-wire SPI interface (Clock, Data In, Data Out).
**Q: What happens when the *CS* pin is set to high?** A: When the CS (Chip Select) pin is high, the device is inactive and does not respond to any commands.
**Q: What should be connected to the *GND* pin of the AT93C46DN-SH-T?** A: The GND pin should be connected to the ground of the circuit.
Q: How is data written to the AT93C46DN-SH-T? A: Data is written by applying the Clock (CLK) signal and sending the data through the Data In (DI) pin while selecting the chip using the Chip Select (CS) pin.
Q: How is data read from the AT93C46DN-SH-T? A: Data is read by sending a clock signal on the CLK pin and receiving the data from the Data Out (DO) pin.
**Q: What is the significance of the *DI* pin?** A: The DI (Data In) pin is where the data is fed into the device during a write operation.
**Q: What is the significance of the *DO* pin?** A: The DO (Data Out) pin is where the data is shifted out during a read operation.
Q: Can the AT93C46DN-SH-T be used for bulk data storage? A: No, the AT93C46DN-SH-T is intended for small data storage, such as configuration settings or small lookup tables.
**Q: What is the purpose of the *NC* pins?** A: The NC (No Connect) pins are not internally connected to any circuitry and can be left unconnected in your design.
Q: Is there any power-down functionality in the AT93C46DN-SH-T? A: Yes, the AT93C46DN-SH-T supports low-power modes and can be powered down by setting the CS pin to a high state and stopping the clock.
Q: What is the typical power consumption of the AT93C46DN-SH-T during read/write? A: The typical power consumption during read/write is around 1mA at 5V.
Q: What is the write endurance of the AT93C46DN-SH-T? A: The typical write endurance is 1 million write/erase cycles.
Q: Can I use the AT93C46DN-SH-T in a 3.3V circuit? A: Yes, the AT93C46DN-SH-T can operate within a 2.5V to 5.5V range, so 3.3V is suitable.
Q: How long does it take to write one byte of data to the AT93C46DN-SH-T? A: A write operation typically takes 5ms to complete.
Q: Is the AT93C46DN-SH-T compatible with standard SPI communication protocols? A: Yes, it is fully compatible with standard SPI (Serial Peripheral Interface) protocols.
Q: Can the AT93C46DN-SH-T be used for automotive applications? A: Yes, it can be used in automotive applications, though additional considerations for temperature and power requirements should be checked.
This should cover most of the functional aspects of the AT93C46DN-SH-T, as well as typical questions related to it. Let me know if you'd like more details or further clarifications!
