Specifications

mikroElektronika | Free Online Book | PIC Microcontrollers | Chapter 8: Other MCU's Circuits
Fig. 8-6 Two Types of External Oscillators
The LP, XT and HS modes support the usage of internal oscillator for configuring clock source. The frequency of this
source is determined by quartz crystal or ceramic resonators connected to the OSC1 and OSC2 pins. Depending on features
of the component in use, select one of the following modes:
LP mode (Low Power) is used for low-frequency quartz crystal only. This mode is designed to drive only 32.768 kHz
crystals usually embedded in quartz watches. It is easy to recognize them by small size and specific cylindrical shape. The
current consumption is the least of the three modes;
XT mode is used for intermediate-frequency quartz crystals up to 8 MHz. The current consumption is the medium of the
three modes ;and
HS mode (High Speed) is used for high-frequency quartz crystals over 8 MHz. The current consumption is the highest of
the three modes.
Fig.8-7 Schematic of External Oscillator and Additional External Components
Ceramic resonators in XT or HS mode
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