GE IS220PVIBH1A 336A4940CSP16

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GE IS220PVIBH1A 336A4940CSP16

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IS220PVIBH1A 336A4940CSP16 has two wires for I2C, SDA and SCL, in addition to GND. All devices are connected to these two wires. So, how do these devices know that data is being sent to them? This depends on the address mentioned earlier. The I2C address of the device is fixed, such as 0x50, 0x60, and so on. Because there can only be 127 addresses, address conflicts are common, so most devices will have an address selection PIN, such as 0x50 when pulled up and 0x60 when grounded. What should we do if there is a conflict with other chips, whether it is raised or grounded? The answer is: cold salad, no way. In this situation, we can only replace the chip.

IS220PVIBH1A 336A4940CSP16 is a clock, while SDA carries data. When SDA changes from 1 to 0 while SCL remains at 1, it indicates the start of data transmission. The next 7 digits are the address of the device. Next is the read-write flag, which is read when it is 1 and write when it is 0. If there is a device on the I2C bus that corresponds to the requested address, the slave device will send an ACK signal to notify the master device that data can be sent. After receiving the ACK signal, the main device sends an 8-bit data. After the transmission is completed, SCL remains at 1 and SDA changes from 0 to 1, indicating the end of the transmission.

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