K32L2AX datasheet(24/96 Pages) NXP

24 / 96 page

2.2.19 Touch Sensing Input (TSI)

The TSI module provides capacitive touch sensing detection with high sensitivity and

enhanced robustness.

This device includes one TSI module containing the channels as shown in the following

table. In Stop, VLPS, LLS, and VLLSx modes, any one channel can be enabled to be

the wake-up source. TSI hardware trigger is from the LPTMR0.

2.2.20 Universal Serial Bus (USB) FS

The USB FS subsystem includes these components:

• Dual-role USB OTG-capable (On-The-Go) controller that supports a full-speed

(FS) device or FS/LS host. The module complies with the USB 2.0 specification.

• USB transceiver that includes internal 15 kΩ pulldowns on the D+ and D- lines for

host mode functionality and a 1.5 kΩ pullup on the D+ line for device mode

functionality.

• A 3.3 V regulator.

• Status detection and wakeup functions for USB data pins, VBUS pin, and OTG ID

pin.

• IRC48 with clock recovery block to eliminate the 48MHz crystal. This is available

for USB device mode only.

NOTE

USB OTG is not functional in VLPx, VLLSx, and any Stop

modes.

NOTE

For the USB FS OTG controller to operate, the minimum

system clock frequency is 20 MHz.

2.2.21 Voltage Reference (VREF)

The VREF can be used in applications to provide a reference voltage to external

devices, or used internally in the device as a reference to analog peripherals (such as the

ADC, DAC, or CMP). The Voltage Reference (VREF) can supply an accurate voltage

output that can be trimmed in 0.5 mV steps (for 1.2 V output) or 1.5 mV steps (for 2.1

V output). The voltage reference has 3 operating modes that provide different levels of

supply rejection and power consumption.

Overview

K32 L2A Microcontroller with 512 KB Flash and 128 KB SRAM, Rev. 3, 02/2021

NXP Semiconductors

K32L2AX датащи(PDF) 24 Page - NXP Semiconductors