Information

Table 2-9. Communication modules
Module Description
USB OTG (low-/full-speed) USB 2.0 compliant module with support for host, device, and On-The-Go modes.
Includes an on-chip transceiver for full and low speeds.
USB Device Charger Detect (USBDCD) The USBDCD monitors the USB data lines to detect a smart charger meeting the
USB Battery Charging Specification Rev1.1. This information allows the MCU to
better manage the battery charging IC in a portable device.
USB voltage regulator Up to 5 V regulator input typically provided by USB VBUS power with 3.3 V
regulated output that powers on-chip USB subsystem, capable of sourcing 120 mA
to external board components.
Controller Area Network (CAN) Supports the full implementation of the CAN Specification Version 2.0, Part B
Serial peripheral interface (SPI) Synchronous serial bus for communication to an external device
Inter-integrated circuit (I2C) Allows communication between a number of devices. Also supports the System
Management Bus (SMBus) Specification, version 2.
Universal asynchronous receiver/
transmitters (UART)
Asynchronous serial bus communication interface with programmable 8- or 9-bit
data format and support of ISO 7816 smart card interface
Secure Digital host controller (SDHC) Interface between the host system and the SD, SDIO, MMC, or CE-ATA cards.
The SDHC acts as a bridge, passing host bus transactions to the cards by sending
commands and performing data accesses to/from the cards. It handles the SD,
SDIO, MMC, and CE-ATA protocols at the transmission level.
I2S The I
2
S is a full-duplex, serial port that allows the chip to communicate with a
variety of serial devices, such as standard codecs, digital signal processors
(DSPs), microprocessors, peripherals, and audio codecs that implement the inter-
IC sound bus (I
2
S) and the Intel
®
AC97 standards
2.3.9 Human-machine interfaces
The following human-machine interfaces (HMI) are available on this device:
Table 2-10. HMI modules
Module Description
General purpose input/output (GPIO) All general purpose input or output (GPIO) pins are capable of interrupt and DMA
request generation. All GPIO pins have 5 V tolerance.
Capacitive touch sense input (TSI) Contains up to 16 channel inputs for capacitive touch sensing applications.
Operation is available in low-power modes via interrupts.
2.4 Orderable part numbers
The following table summarizes the part numbers of the devices covered by this
document.
Orderable part numbers
K20 Sub-Family Reference Manual, Rev. 6, Nov 2011
62 Freescale Semiconductor, Inc.