The model "AT24C32D-SSHM-T" corresponds to a specific EEPROM ( Electrical ly Erasable Programmable Read-Only Memory ) component from Microchip Technology (previously Atmel, which was acquired by Microchip).
Overview:
Model: AT24C32D-SSHM-T Brand: Microchip Technology (formerly Atmel) Type: EEPROM (32K-bit) Package Type: TSSOP (Thin Shrink Small Outline Package)Pinout and Functions:
The AT24C32D-SSHM-T comes in a TSSOP-8 package, which has 8 pins. Below is a detailed pin function list with complete descriptions.
Pin No. Pin Name Function Description 1 A0 Address pin 0 (LSB). Used to select the lower address of the device when multiple devices are connected on the I2C bus. 2 A1 Address pin 1. Works with A0 to select the address of the device for I2C Communication . 3 A2 Address pin 2. Works with A0 and A1 to select the address of the device for I2C communication. 4 GND Ground pin. Connects to the ground of the system to complete the circuit. 5 SDA Serial Data pin. This pin is used for bi-directional data transfer in I2C communication. 6 SCL Serial Clock pin. This pin is used to provide the clock signal for I2C communication. 7 VCC Power supply pin. This pin is connected to the positive voltage supply (typically 2.7V to 5.5V). 8 WP Write Protect pin. This pin is used to protect the EEPROM from writing when it is held low. It is tied high for normal operation.Circuit Principle Instructions:
The AT24C32D-SSHM-T operates over the I2C interface and typically connects to a microcontroller (MCU). Below is a simplified explanation of how the device works:
I2C Communication: The AT24C32D is designed to communicate with other devices using the I2C protocol. The data is transmitted serially over the SDA (Serial Data) and SCL (Serial Clock) lines. Addressing: The device has a 7-bit address, and the address pins (A0, A1, A2) are used to select the specific address when multiple devices are connected to the same I2C bus. Power and Ground: The VCC pin connects to a voltage supply (usually between 2.7V and 5.5V), and the GND pin connects to ground. Write Protection: The WP pin is used to enable or disable write operations. When this pin is held low, the device is in write-protected mode, and data cannot be written to the EEPROM. Memory Access : The AT24C32D provides 32 Kbits (4 KBytes) of storage, accessible in 8-bit byte format.Common FAQs (20):
1. What is the voltage range for the AT24C32D-SSHM-T? The voltage range for the AT24C32D-SSHM-T is from 2.7V to 5.5V.
2. How many bits does the AT24C32D-SSHM-T store? It stores 32 Kbits (4 KBytes) of memory.
3. What type of communication protocol does the AT24C32D-SSHM-T use? It uses the I2C (Inter-Integrated Circuit) communication protocol.
4. How many address pins does the AT24C32D-SSHM-T have? It has 3 address pins: A0, A1, and A2.
5. What is the purpose of the WP (Write Protect) pin? The WP pin is used to disable or enable write operations to the memory. When held low, it protects the EEPROM from writing.
6. How do I connect the AT24C32D-SSHM-T to a microcontroller? The SDA and SCL pins are connected to the microcontroller's I2C data and clock lines. The address pins (A0, A1, A2) are used to select the I2C address, and the VCC and GND pins are connected to power and ground, respectively.
7. What is the maximum clock frequency for I2C communication? The maximum clock frequency for I2C communication with the AT24C32D-SSHM-T is typically 400kHz (Fast mode).
8. Can I connect multiple AT24C32D-SSHM-T devices on the same I2C bus? Yes, you can connect multiple devices. Each device is assigned a unique I2C address by using different combinations of the A0, A1, and A2 address pins.
9. What is the function of the A0, A1, and A2 address pins? These address pins allow you to select the I2C address of the device when multiple AT24C32D-SSHM-T devices are connected to the same bus.
10. What happens if the WP pin is low? If the WP pin is low, the write protection is enabled, and no data can be written to the EEPROM.
11. What is the write cycle time of the AT24C32D-SSHM-T? The write cycle time is typically 5ms.
12. Can the AT24C32D-SSHM-T be used in low-power applications? Yes, it has a low operating current and is suitable for battery-powered devices.
13. How can I read data from the AT24C32D-SSHM-T? Data can be read from the EEPROM by sending the correct I2C read command along with the address of the memory location you wish to read.
14. How many write cycles is the AT24C32D-SSHM-T rated for? The device is typically rated for 1 million write cycles.
15. What is the I2C address of the AT24C32D-SSHM-T? The I2C address is determined by the A0, A1, and A2 pins, with the base address being 0xA0.
16. What is the maximum data transfer rate for the AT24C32D-SSHM-T? The maximum data transfer rate is typically 400kHz (Fast mode) over the I2C interface.
17. Can the AT24C32D-SSHM-T be used in a 5V system? Yes, the AT24C32D-SSHM-T can operate with a 5V supply, making it compatible with 5V systems.
18. What is the AT24C32D-SSHM-T’s typical power consumption? The typical power consumption is very low, usually in the range of microamperes during standby.
19. What is the package type for the AT24C32D-SSHM-T? It comes in a TSSOP-8 package, which has 8 pins.
20. Can I use the AT24C32D-SSHM-T for data logging applications? Yes, this EEPROM is ideal for data logging applications where small amounts of data need to be stored and retrieved using I2C communication.
Conclusion:
The AT24C32D-SSHM-T is a versatile and low-power EEPROM with 32Kbit of memory that can be easily interfaced with I2C-based systems. It is commonly used in applications like data logging, configuration storage, and other memory-related tasks. The detailed pinout, functions, and FAQ section provide all the necessary information for integrating this device into your system.
