24LC02BT-I-SN Detailed explanation of pin function specifications and circuit principle instructions

The part number " 24LC02BT-I/SN " is a specific model of an EEPROM ( Electrical ly Erasable Programmable Read-Only Memory ) produced by Microchip Technology Inc. This type of component is typically used in applications where non-volatile memory is required, such as storing data in microcontroller-based systems.

Now, let’s break down the requested information:

Pinout and Package Information for 24LC02BT-I/SN:

This device is a 2Kb (256 x 8) I²C-compatible EEPROM in an 8-pin package. The specific details of the package and the pinout are as follows:

Package Type: 8-Pin PDIP (Plastic Dual In-line Package) or 8-Pin SOIC (Small Outline Integrated Circuit). Pin Functionality:

The 24LC02BT-I/SN is available in several different package options, but the 8-pin version is most common. Below is the detailed pinout and explanation of the function of each pin.

Pin Number Pin Name Function Description 1 A0 Address Pin 0 (Used to select the I2C device address when connected to VCC or GND) 2 A1 Address Pin 1 (Used to select the I2C device address when connected to VCC or GND) 3 A2 Address Pin 2 (Used to select the I2C device address when connected to VCC or GND) 4 GND Ground Pin (This is the reference ground voltage for the device) 5 SDA Serial Data Line (I²C bidirectional data line for communication with the master) 6 SCL Serial Clock Line (I²C clock line used to synchronize data transfer) 7 WP Write Protect Pin (When connected to VCC, the device is write-protected, preventing write operations) 8 VCC Supply Voltage Pin (Typically 2.5V to 5.5V for the device to operate)

Detailed Function of Each Pin:

A0, A1, A2 (Address Pins): These pins are used to configure the I²C address of the EEPROM. By connecting them to logic high (VCC) or low (GND), you can define the device’s I²C address. If all pins (A0, A1, A2) are tied to ground, the device address will be 0x50. GND (Ground Pin): This is the common reference point for all signals and should be connected to the ground of the system. SDA (Serial Data): The SDA pin is used for sending and receiving data in the I²C communication protocol. It is bidirectional, meaning data can flow both to and from the EEPROM. The data on this line is synchronized with the SCL clock signal. SCL (Serial Clock): The SCL pin is used for the clock signal in I²C communication. It ensures that data on the SDA line is read at the correct time. The clock signal is generated by the I²C master device. WP (Write Protect): When this pin is connected to VCC, it prevents write operations to the memory, effectively protecting data from accidental modification. If WP is tied low (GND), writing to the EEPROM is enabled. VCC (Supply Voltage): This pin supplies the voltage needed for the device to operate, typically in the range of 2.5V to 5.5V.

Package Pinout Details:

The 8-pin PDIP and 8-pin SOIC packages both have the same functionality, but differ in physical form factors.

Frequently Asked Questions (FAQs) for the 24LC02BT-I/SN:

Q: What is the maximum voltage rating for the VCC pin of the 24LC02BT-I/SN? A: The maximum voltage rating for the VCC pin is 5.5V.

Q: Can I use the 24LC02BT-I/SN with a 3.3V supply voltage? A: Yes, the 24LC02BT-I/SN can operate with a supply voltage in the range of 2.5V to 5.5V, so 3.3V is within the acceptable range.

Q: What happens if I connect the WP pin to ground? A: Connecting the WP pin to ground enables write operations, allowing you to write data to the EEPROM.

Q: Can I use the 24LC02BT-I/SN without connecting the address pins (A0, A1, A2)? A: No, the address pins must be connected to define the I2C address of the device.

Q: How do I read data from the 24LC02BT-I/SN? A: Data is read using the I²C protocol by sending a read command to the device through the SDA and SCL lines.

Q: Can I connect multiple EEPROMs on the same I²C bus? A: Yes, by adjusting the address pins (A0, A1, A2), you can connect multiple devices to the same I²C bus with unique addresses.

Q: What is the maximum clock frequency for I²C communication with the 24LC02BT-I/SN? A: The maximum clock frequency for I²C communication is 400 kHz in Fast Mode.

Q: What is the storage capacity of the 24LC02BT-I/SN? A: The 24LC02BT-I/SN has a storage capacity of 2Kb (2048 bits), which is organized as 256 bytes.

Q: How many bits are in each memory location? A: Each memory location in the 24LC02BT-I/SN is 1 bit, and the memory is organized as 256 bytes (2048 bits).

Q: Can the 24LC02BT-I/SN store data indefinitely without power? A: Yes, the 24LC02BT-I/SN is non-volatile, meaning it retains data even when the power is removed.

Q: What is the typical current consumption of the 24LC02BT-I/SN during operation? A: The typical current consumption during operation is about 1 mA.

Q: Is there a limit to how many write cycles the 24LC02BT-I/SN can endure? A: Yes, the 24LC02BT-I/SN is rated for 1 million write cycles per memory location.

Q: How do I erase data in the 24LC02BT-I/SN? A: Data in the 24LC02BT-I/SN can be overwritten using I²C commands. There is no separate "erase" operation; you simply overwrite the data.

Q: Can the 24LC02BT-I/SN be used in high-speed applications? A: While the 24LC02BT-I/SN supports up to 400 kHz I²C communication, it is not designed for high-speed applications. For faster data rates, other memory types are recommended.

Q: What is the minimum operating temperature of the 24LC02BT-I/SN? A: The minimum operating temperature is -40°C.

Q: Can I use the 24LC02BT-I/SN for storing program code? A: The 24LC02BT-I/SN is more suited for storing data rather than program code, as it has a relatively small storage capacity.

Q: How do I prevent accidental writes to the 24LC02BT-I/SN? A: To prevent accidental writes, you can tie the WP pin to VCC to enable write protection.

Q: What is the write time for the 24LC02BT-I/SN? A: The typical write cycle time is 5 ms.

Q: Can the 24LC02BT-I/SN be used in automotive applications? A: Yes, the 24LC02BT-I/SN can be used in automotive applications, but ensure it operates within the temperature range specified.

Q: What is the I²C address of the 24LC02BT-I/SN? A: The default I²C address of the 24LC02BT-I/SN is 0x50, but it can be modified by changing the A0, A1, and A2 address pins.

This detailed explanation of the 24LC02BT-I/SN should help you with understanding the function of each pin and how to interact with it effectively.