The SCL enter is accustomed to optimistic edge clock info into every single EEPROM gadget and destructive edge clock details beyond each gadget.
SERIAL Information and facts (SDA): The SDA pin is bidirectional for serial information transfer. This pin is open-drain pushed and should be wire-ORed with any amount of other open-drain or open- collector devices.
DEVICE/PAGE ADDRESSES (A2, A1, A0): The A2, A1 and A0 pins are gadget tackle inputs which could be actually really hard wired using the AT24C01A in addition to the AT24C02. As numerous as 8 1K/2K models could be dealt with having a one particular bus technique (device addressing is discussed in detail underneath the Device Addressing section).
The AT24C04 employs the A2 and A1 inputs for demanding wire addressing and a in general of 4 4K units could be resolved about the one bus procedure. The A0 pin is really a no be part of and is likely to be linked to ground.
The AT24C08A only will work through the use of the A2 enter for hardwire addressing in addition a complete of two 8K units may be settled more than a a person bus system. The A0 and A1 pins aren't any connects and is likely to be connected to ground.
The AT24C16A will not make use of the gadget handle pins, which limits the amount of units that has a solitary bus to one. The A0, A1 and A2 pins usually are not any connects and might be linked to flooring.