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Serial EEPROM devices like the Microchip 24-series EEPROM allow you to add more memory to any device that can speak I²C. Today we're going to learn how to read and write serial EEPROM devices using Arduino.
The 24C64 provides 65,536 bits (8kB) of serial electrically erasable and programmable read-only memory (EEPROM) organized as 8192 words of 8 bits each. The device’s cascadable feature allows up to 8 devices to share a common 2-wire (I2C) bus.
29 Νοε 2023 · The eeprom_i2c_read() function reads a single byte of data from a specified address in the EEPROM. The function takes two arguments: address is the I2C address of the EEPROM chip, and from_addr is the memory address in the EEPROM to read from.
eeprom address pointer is set using one or two pointer bytes, combined with 0-3 of the lower I2C address bits as block select bits. The memories can be classified as:
27 Νοε 2021 · Now we will see how to write or read data on an I2C EEPROM like 24C256C. This serial EEPROM is organized as 32,768 words of 8 bits each. The device’s cascading feature allows up to eight devices to share a common 2-wire bus. It is available in various 8-pin packages.
I2C EEPROM are the best fit to: optimize MCU resources thanks to its only 2-wire bus. interface external NVM with sensors and advanced digital cores without creating different supply voltage levels. minimize the PCB footprint with small DFN8 and DFN5 packages and even 4-ball WLCSP.
19 Ιουν 2019 · I2C memory is often found in 8-pin packages with the following pins: VCC / VSS – Power-providing pins. Ax – Device selection pins. SCL – Serial Clock. SDA – Serial Data. WP – Write Protect.
