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2 . 2
Operating Mode Pins
These pins determine the Q2's operating mode. The mode is fixed in a reset-startup.
1. MODE2 = L, MODE1 = L, MODE0 = L
Normal operation state. Multiplication on. The external clock is duty-free.
The internal operating clock has the same frequency as the external input clock.
2. MODE2 = L, MODE1 = L, MODE0 = H
Normal operation state. Multiplication on. The external clock is duty-free.
The internal operating clock has twice the frequency of the external input clock.
3. MODE2 = L, MODE1 = H, MODE0 = L
Normal operation state. Multiplication on. The external clock is duty-free.
The internal operating clock has four times the frequency of the external input clock.
4. MODE2 = L, MODE1 = H, MODE0 = H
Normal operation state. Multiplication off. The external clock must have a 50% duty.
An external clock is used as the internal operating clock.
5. MODE2 = H, MODE1 = *, MODE0 = *: Setting prohibited
Notes: H: High level
L: Low level
*: Either high or low level
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