IIC is generally simulated more, that is, using ordinary IO port to simulate IIC timing, and the corresponding code can be easily found on the Internet. However, many microcontrollers still have IIC hardware modules, such as the AVR series of microcontrollers is its own IIC module based on the state machine. The stm32 also has an IIC hardware module. TI's msp430 series microcontrollers also have IIC modules. There are many microcontrollers with IIC. If you want to choose, it is recommended that you choose according to the processing capacity of the MCU, and then find the technical document to see whether there is an IIC interface.
24c02c。
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Serial E2PROM is a memory device based on I2C-BUS. It follows two-wire protocol. Because of its convenient interface, small size and no loss of data in power failure, it has been widely used in instrumentation and industrial automation control.
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The interface between 24C02 and MCU is very simple, E0, E1, E2 is the device address line, WP is the write protection pin, SCL, SDA is the second-line serial interface, in line with the I2C bus protocol.