4.2.3 I2C Pullups

An I2C bus requires pull-up resistors to function. Should no other device on the I2C bus have them, the PIC16F15244 Curiosity Nano provides footprints for two 0402 SMD resistors (not mounted) so that the pull-ups can be soldered on. These resistors will pull the I2C lines to VCC_TARGET.

Figure 4-4. PIC16F15244 Curiosity Nano I2C resistor footprints
Note: The PIC16F15244 also has internal pull-ups that can be enabled as an alternative to soldering.
Table 4-3. PIC16F15244 Curiosity Nano I2C pins
PIC16F15244 PinDescriptionShared Functionality
RB4I2C SDAEdge connector
RB6I2C SCLEdge connector