Getting Started with I2C

Agenda

What we are going to talk about:

• I2C
• DS3231
• AT24C32
• TM1637
• Logic8 / Logic16

1) What is I2C - The bus hardware
2) START and STOP conditions (These are NOT bits)
3) I2C Address and the R /W bit - (7 or 8 bit I2C address ?)
4) Acknowledge bit (receiver of data provides acknowledge)
5) What isn't I2C?  Examine the TM1637
5) Checkout the DS3231, write and read it's registers
6) Checkout the AT24C32, write and read data

DS3231 Module

DS3231

The time (and temperature), are accessed via 19 byte-wide registers, see Address Map on page 11.
https://www.analog.com/media/en/technical-documentation/data-sheets/ds3231.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/ds3231m.pdf (The 'M' variant)

AT24C32

This 32Kbit EEPROM (4096 x 8), will hold 4096 bytes of data.
https://ww1.microchip.com/downloads/en/DeviceDoc/doc0336.pdf

References:
https://www.ti.com/lit/an/sbaa565/sbaa565.pdf
https://www.analog.com/media/en/technical-documentation/data-sheets/ds3231.pdf
https://www.arduino.cc/en/uploads/Main/Arduino_Uno_Rev3-schematic.pdf