Datasheet

78K0/Ix2 CHAPTER 13 COMPARATORS
R01UH0010EJ0500 Rev.5.00 409
Feb 28, 2012
CHAPTER 13 COMPARATORS
13.1 Features of Comparators
Comparators are mounted onto all 78K0/Ix2 microcontroller products.
Comparators have the following functions.
• Comparators are equipped with three channels (comparators 0 to 2).
• The following reference voltages can be selected.
<1> Internal reference voltage: 3 (reference voltage level: 1.58 V (TYP.) divided by 32)
<2> Input voltage from comparator common pin (CMPCOM) (78K0/IB2 only)
• An interrupt signal can be generated by detecting the valid edge of the comparator output. The valid edge can be
set by using the EGPn and EGNn bits (n = 6 to 8) (refer to CHAPTER 18 INTERRUPT FUNCTIONS).
• The comparator output can be used as the PWM output of 16-bit timers X0 and X1, a timer counter reset, and a
capture trigger (refer to CHAPTER 6 16-BIT TIMERS X0 AND X1).
• The elimination width of the noise elimination digital filter can be selected.