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

4.5.2.4 COP Watchdog Module

• Independent clock source input (independent from CPU/bus clock)

• Choice between two clock sources

• LPO oscillator

• Bus clock

4.5.2.5 System Clocks

• System Oscillator (XOSC) — Loop-control Pierce oscillator; Crystal or ceramic resonator range of 32 kHz to 40 kHz

(low range mode) or 3-32 MHz (high range mode)

• Multipurpose Clock Generator (MCG)

• Phase-locked loop (PLL) controlled by external MHz reference for low jitter clock output up to 100MHz VCO

output

• Frequency-locked loop (FLL) controlled by internal or external reference

• 20MHz~40MHz FLL output

• 40MHz~48MHz FLL output

• Internal reference clocks — Can be used as a clock source for other on-chip peripherals

• On-chip RC oscillator range of 31.25 kHz to 39.0625 kHz with 0.2% trim step and 1% accuracy across

temperature range of 0 °C to 70 °C and 2% accuracy across full temperature range

• Ultra low power 4 MHz IRC

Memories and Memory Interfaces

4.5.3.1 On-Chip Memory

• 48 MHz performance devices

• Up to 64 KB program flash memory for KL24 and up to 128 KB flash memory for KL25

• Up to 8 KB SRAM for KL24 and up to 16 KB SRAM for KL25

• Security circuitry to prevent unauthorized access to RAM and flash contents

Analog

4.5.4.1 Analog-to-Digital Converter (ADC)

• Linear successive approximation algorithm with up to 16-bit resolution

• Output modes:

• Differential 16-bit, 13-bit, 11-bit, and 9-bit modes, in two’s complement 16-bit sign-extended format for KL25

• Single-ended 16-bit (KL25 only), 12-bit, 10-bit, and 8-bit modes, in right-justified unsigned format

• Single or continuous conversion

• Configurable sample time and conversion speed/power

4.5.3

4.5.4

Memories and Memory Interfaces

KL24/KL25 Product Brief, Rev. 2, 6/2012

14

Preliminary

Freescale Semiconductor, Inc.

General Business Information