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9-6
8XC196NP, 80C196NU USER’S MANUAL
For the 80C196NU, the PWM module provides three selectable, fixed PWM output frequencies
for a specified internal operating frequency (f). Table 9-3 shows the PWM output frequencies for
common operating frequencies. The value of bits 0 and 1 in the CON_REG0 register determines
the output frequency by enabling or disabling the divide-by-two or divide-by-four clock prescal-
er.
NOTE
Use the EPA module to produce variable PWM output frequencies (see
“Operating in Compare Mode” on page 10-12).
Table 9-3. PWM Output Frequencies (8XC196NP)
CLK0
f
16 MHz 20 MHz 25 MHz
0 31.25 kHz 39.06 kHz 48.83 kHz
1 15.63 kHz 19.53 kHz 24.41 kHz
Table 9-4. PWM Output Frequencies (80C196NU)
CLK1 CLK0
f
12.5 MHz 25 MHz 50 MHz
0 0 24.41 kHz 48.83 kHz 97.66 kHz
0 1 12.21 kHz 24.41 kHz 48.83 kHz
1 X 6.10 kHz 12.21 kHz 24.41 kHz