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Module functional categories
Module
Periodic interrupt timers (PIT)
Low power timer (LPTMR)
Real Time Clock (RTC)
2.2.8 Communication interfaces
The following communication interfaces are available on this device:
Module
USB controller with built-in FS
transceiver
USB voltage regulator
Serial peripheral interface (SPI)
Inter-integrated circuit (I2C)
Universal asynchronous receiver/
transmitters (UART)
and
(LPUART)
I2S
FlexIO
44
Table 2-8. Timer modules (continued)
• Support the generation of an interrupt and/or DMA request per channel
• Support the generation of an interrupt and/or DMA request when the counter
overflows
• Support selectable trigger input to optionally reset or cause the counter to
start incrementing.
• Support the generation of hardware triggers when the counter overflows and
per channel
• One general purpose interrupt timer
• Interrupt timers for triggering ADC conversions
• 32-bit counter resolution
• Clocked by bus clock frequency
• DMA support
• 16-bit time counter or pulse counter with compare
• Configurable clock source for prescaler/glitch filter
• Configurable input source for pulse counter
• 32-bit seconds counter with roll-over protection and 32-bit alarm
• Software selectable clock sources for input to prescaler with programmable
16-bit prescaler
• XOSC 32.678 kHz nominal
• LPO (~1 kHz)
• External RTC_CLKIN
Table 2-9. Communication modules
Dual-role USB controller that supports a full-speed (FS) device. The module
complies with the USB 2.0 specification.
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.
Synchronous serial bus for communication to an external device
Allows communication between a number of devices. Also supports the System
Management Bus (SMBus) Specification, version 2.
Two low power UART modules that retains functional in stop modes. One UART
module does not work in stop mode.
2
The I
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-
2
IC sound bus (I
S) and the Intel
The FlexIO module is capable of supporting a wide range of protocols including,
but not limited to--UART, I2C, SPI, I2S, Camera IF, LCD RGB, PWM / Waveform
generation. The module can remain functional in VLPS mode provided the clock it
is using remains enabled.
KL27 Sub-Family Reference Manual , Rev. 5, 01/2016
Description
Description
®
AC97 standards
Freescale Semiconductor, Inc.
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