EEPROM 17 Click

How does it work?

EEPROM 17 Click is based on the M24C04-R, a 4Kbit serial I2C bus EEPROM from STMicroelectronics, organized as 512 bytes with a page size of 16 bytes. This board provides a reliable and flexible non-volatile data storage solution ideally suited for a wide range of embedded applications. It supports both random and sequential read operations, enabling efficient data access patterns for various use cases, from simple data logging to configuration storage. The write functionality includes byte and page write modes, both capable of completing a write cycle in under 5 milliseconds, which ensures fast memory updates while maintaining system responsiveness.

The entire memory array can be write-protected to safeguard critical data against unintended modifications. The M24C04-R offers exceptional endurance with more than 4 million guaranteed write cycles per memory cell and ensures long-term data integrity with a data retention period exceeding 200 years.

This Click board™ is designed in a unique format supporting the newly introduced MIKROE feature called "Click Snap." Unlike the standardized version of Click boards, this feature allows the main sensor/IC/module area to become movable by breaking the PCB, opening up many new possibilities for implementation. Thanks to the Snap feature, the M24C04-R can operate autonomously by accessing its signals directly on the pins marked 1-8. Additionally, the Snap part includes a specified and fixed screw hole position, enabling users to secure the Snap board in their desired location.

This Click board™ uses an I2C interface with clock speeds of up to 400kHz, ensuring fast communication with the host MCU. The I2C address of the M24C04-R can be easily configured via onboard jumper marked E1 SEL in the Snap area, allowing multiple devices to coexist on the same bus. Beyond communication pins, this board is also equipped with a write control signal (WC) for protecting the entire contents of the memory from inadvertent write operations. Write operations are disabled to the entire memory array when write control (WC) is driven HIGH. When write control (WC) is driven HIGH, device select and address bytes are acknowledged; data bytes are not acknowledged.

This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.

Click Snap

Click Snap is an innovative feature of our standardized Click add-on boards, designed to bring greater flexibility and optimize your prototypes. By simply snapping the PCB along predefined lines, you can easily detach the main sensor/IC/module area, reducing the overall size, weight, and power consumption - ideal for the final phase of prototyping. For more details about Click Snap, visit the official page dedicated to this feature.

Specifications

Pinout diagram

This table shows how the pinout on EEPROM 17 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	WC	Write Control
	NC	2	RST	INT	15	NC
ID COMM	CS	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	SCL	I2C Clock
	NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

EEPROM 17 Click electrical specifications

Software Support

EEPROM 17 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

Example Description

This example demonstrates the use of EEPROM 17 Click board by writing specified data to the memory and reading it back.

Key Functions

• eeprom17_cfg_setup This function initializes Click configuration structure to initial values.
• eeprom17_init This function initializes all necessary pins and peripherals used for this Click board.
• eeprom17_write_memory This function writes data to the EEPROM memory starting from the specified address.
• eeprom17_read_memory This function reads data from the EEPROM memory starting from the specified address.
• eeprom17_select_bank This function selects the active memory bank in the EEPROM.

Application Init

Initializes the driver and logger.

Application Task

Writes a desired number of bytes to the memory and then verifies if it is written correctly by reading from the same memory location and displaying the memory content on the USB UART.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.