NXP Semiconductors freescale KV4 Series, Reference Manual

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Chapter 29
Oscillator (OSC)
29.1 Introduction
The OSC module is a crystal oscillator. The module, in conjunction with an external
crystal or resonator, generates a reference clock for the MCU.
29.2 Features and Modes
Key features of the module are listed here.
• Supports 32 kHz crystals (Low Range mode)
• Supports 3–8 MHz, 8–32 MHz crystals and resonators (High Range mode)
• Automatic Gain Control (AGC) to optimize power consumption in high frequency
ranges 3–8 MHz, 8–32 MHz using low-power mode
• High gain option in frequency ranges: 32 kHz, 3–8 MHz, and 8–32 MHz
• Voltage and frequency filtering to guarantee clock frequency and stability
• Optionally external input bypass clock from EXTAL signal directly
• One clock for MCU clock system
• Two clocks for on-chip peripherals that can work in Stop modes
Functional Description describes the module's operation in more detail.
KV4x Reference Manual, Rev. 2, 02/2015
Freescale Semiconductor, Inc.
Preliminary
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