PIC18F4620-I/PT

Description / Summary  and Features of the Product  arev as below:

Ten distinct oscillator variants are available across the PIC18F2525/2620/4525/4620 family of devices, giving customers a wide range of possibilities when designing application hardware. Four crystal modes employing crystal or ceramic resonators are among them.
• Two external clock modes that allow for the use of either one pin (oscillator input with the additional pin designated as general I/O) or two pins (oscillator input plus a divide-by-4 clock output).
• Two additional RC oscillator modes that share the same pin configurations as external clock modes.

• An internal oscillator block that offers a total of 8 clock frequencies, 6 user-selectable clock frequencies between 125 kHz and 4 MHz, an INTRC source (about 31 kHz), and an 8 MHz clock. The two oscillator pins can now be used as extra general purpose I/O thanks to this option.
• A Phase Lock Loop (PLL) frequency multiplier that may be used with the Internal Oscillator and High-Speed Crystal modes to increase clock speeds up to 40 MHz. Without the need for an additional crystal or clock circuit, the PLL provides users with a full range of clock rates, from 31 kHz to 32 MHz, to be used with the internal oscillator.