• Up to 32 interrupt sources

• Includes a single non-maskable interrupt

4.5.1.3 Wake-up Interrupt Controller (WIC)

• Supports interrupt handling when system clocking is disabled in low power modes

• Takes over and emulates the NVIC behavior when correctly primed by the NVIC on entry to very-deep-sleep

• A rudimentary interrupt masking system with no prioritization logic signals for wake-up as soon as a non-masked

interrupt is detected

• Contains no programmer’s model visible state and is therefore invisible to end users of the device other than through

the benefits of reduced power consumption while sleeping

4.5.1.4 Debug Controller

• 2-pin serial wire debug (SWD) provides external debugger interface

• Micro trace buffer (MTB) provides simple execution trace capability and operates as a simple AHB-Lite SRAM

controller

System Modules

4.5.2.1 Power Management Control Unit (PMC)

• Separate digital (regulated) and analog (referenced to digital) supply outputs

• Programmable power saving modes

• No output supply decoupling capacitors required

• Available wake-up from power saving modes via RTC and external inputs

• Integrated Power-on Reset (POR)

• Integrated Low Voltage Detect (LVD) with reset (brownout) capability

• Selectable LVD trip points

• Programmable Low Voltage Warning (LVW) interrupt capability

• Buffered bandgap reference voltage output

• Factory programmed trim for bandgap and LVD

• 1 kHz Low Power Oscillator (LPO)

4.5.2.2 DMA Channel Multiplexer (DMA MUX)

• 4 independently selectable DMA channel routers

• 2 periodic trigger sources available

• Each channel router can be assigned to 1 of 63 possible peripheral DMA sources

4.5.2.3 DMA Controller

Four independently programmable DMA controller channels provides the means to directly transfer data between system

memory and I/O peripherals

• DMA controller is capable of functioning in run, wait and stop modes of operation

• Dual-address transfers via 32-bit master connection to the system bus

• Data transfers in 8-, 16-, or 32-bit blocks

• Continuous-mode or cycle-steal transfers from software or peripheral initiation

4.5.2

System Modules

KL14/KL15 Product Brief, Rev. 2, 6/2012

Freescale Semiconductor, Inc.

Preliminary

13

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