2.4 Module functional categories
The modules on this device are grouped into functional categories. The following
sections describe the modules assigned to each category in more detail.
Table 2-1. Module functional categories
Module category Description
ARM Cortex-M0+ core • 32-bit MCU core from ARM’s Cortex-M class, 1.77 CoreMark
®
/MHz from
single-cycle access memories, 48 MHz CPU frequency
System • System integration module
• Power management and mode controllers
• Multiple power modes available based on run, wait, stop, and power-
down modes
• Miscellaneous control module
• Low-leakage wakeup unit
• Peripheral bridge
• Direct memory access (DMA) controller with multiplexer to increase available
DMA requests
• COP watchdog
Memories • Internal memories include:
• Up to 128 KB flash memory
• up to 16 KB SRAM
Clocks • Multiple clock generation options available from internally- and externally-
generated clocks
• MCG module with FLL and PLL for systems and CPU clock sources
• Low power 1 kHz RC oscillator for RTC and COP watchdog
• System oscillator to provide clock source for the MCU
Security • COP watchdog timer (COP)
Analog • 16-bit analog-to-digital converters with DMA supported and four muxed
differential pairs
• Comparator (CMP) with internal 6-bit digital-to-analog converter (DAC)
• 12-bit DAC with DMA support and two 16-bit data buffer
Timers • One 6-channel TPM
• Two 2-channel TPMs
• 2-channel periodic interrupt timer
• Real time clock
• Low-power timer
• System tick timer
Communications • Two 8-bit serial peripheral interface
• USB OTG controller with built-in FS/LS transceiver
• USB voltage regulator
• Two inter-integrated circuit (I
2
C) modules
• One low power UART module and two UART modules
Human-Machine Interfaces (HMI) • General purpose input/output controller
• Capacitive touch sense input interface enabled in hardware
Chapter 2 Introduction
KL25 Sub-Family Reference Manual, Rev. 3, September 2012
Freescale Semiconductor, Inc. 39
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