EEPROM 13 Click

How does it work?

EEPROM 13 Click is based on the M24M01E, an electrically erasable programmable memory with enhanced hardware write protection for entire memory from STMicroelectronics. The M24M01E has software and hardware write protection features and random and sequential read modes. If the address area is write-protected, the write instruction is not executed. During the internal write cycle, the serial data is turned off internally, and the device does not respond to any requests. The performance features cover enhanced ESD/latch-up protection, more than 4 million write cycles, more than 200 years of data retention, and a very fast wake-up time (less than 5μs).

EEPROM 13 Click uses a standard 2-wire I2C interface to communicate with the host MCU, supporting standard, fast, and fast mode plus with up to 1MHz of frequency clock. The write control WC pin serves as a write protect option and is active with a High logic state.

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.

Specifications

Pinout diagram

This table shows how the pinout on EEPROM 13 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	NC
Write Control	WC	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 13 Click electrical specifications

Software Support

We provide a library for the EEPROM 13 Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Library Description

This library contains API for EEPROM 13 Click driver.

Key functions

• eeprom13_memory_write This function writes a desired number of data bytes starting from the selected memory address.

• eeprom13_memory_read This function reads a desired number of data bytes starting from the selected memory address.

• eeprom13_hw_write_enable This function disabled hardware write protection of the entire memory.

Example Description

This example demonstrates the use of EEPROM 13 Click board™. The demo app writes specified data to the memory and reads it back.

void application_task ( void )  
 { 
     uint8_t data_buf[ 128 ] = { 0 }; 
     memcpy( data_buf, DEMO_TEXT_MESSAGE_1, strlen( DEMO_TEXT_MESSAGE_1 ) ); 
     if ( EEPROM13_OK == eeprom13_memory_write( &eeprom13, STARTING_ADDRESS,  
                                                           data_buf,  
                                                           strlen( DEMO_TEXT_MESSAGE_1 ) ) ) 
     { 
         log_printf( &logger, " Write data: %srn", data_buf ); 
         Delay_ms( 100 ); 
     } 

     memset( data_buf, 0, sizeof( data_buf ) ); 
     Delay_ms( 100 ); 
     if ( EEPROM13_OK == eeprom13_memory_read( &eeprom13, STARTING_ADDRESS,  
                                                          data_buf,  
                                                          strlen( DEMO_TEXT_MESSAGE_1 ) ) ) 
     { 
         Delay_ms( 100 ); 
         log_printf( &logger, " Read data: %srnn", data_buf ); 
         Delay_ms( 3000 ); 
     } 

     memcpy( data_buf, DEMO_TEXT_MESSAGE_2, strlen( DEMO_TEXT_MESSAGE_2 ) ); 
     if ( EEPROM13_OK == eeprom13_memory_write( &eeprom13, STARTING_ADDRESS,  
                                                           data_buf,  
                                                           strlen( DEMO_TEXT_MESSAGE_2 ) ) ) 
     { 
         log_printf( &logger, " Write data: %srn", data_buf ); 
         Delay_ms( 100 ); 
     } 

     memset( data_buf, 0, sizeof( data_buf ) ); 
     Delay_ms( 100 ); 
     if ( EEPROM13_OK == eeprom13_memory_read( &eeprom13, STARTING_ADDRESS,  
                                                          data_buf,  
                                                          strlen( DEMO_TEXT_MESSAGE_2 ) ) ) 
     { 
         Delay_ms( 100 ); 
         log_printf( &logger, " Read data: %srnn", data_buf ); 
         Delay_ms( 3000 ); 
     } 
 }

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.

Other Mikroe Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.EEPROM13

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MIKROE compilers.

mikroSDK

This Click board™ is supported with mikroSDK – MIKROE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.