2 Required Peripherals

Table 2-1 and Table 2-2 describe the required integrated peripherals.

Table 2-1 Required Peripherals for Controller

Subblock Functionality	Peripheral Use	Notes
LED and Interrupt Pin	(2 ×) GPIO	Shown as LED and IRQ_IN in code
I2C Controller	(1 ×) I2C	Shown as I2C in code

Table 2-2 Required Peripherals for IO Expander

Subblock Functionality	Peripheral Use	Notes
GPIO and Interrupt Pin	(9 ×) GPIO	Shown as PIN_0, PIN_1, PIN_2, PIN_3, PIN_4, PIN_5, PIN_6, PIN_7, and IRQ_OUT in code
I2C Target	(1 ×) I2C	Shown as I2C in code