UPD78F9418A NEC, UPD78F9418A Datasheet - Page 166

• Manufacturer Part Number: UPD78F9418A
• Description: (UPD7894xxA) 8-Bit Single Chip Microcontrollers
• Manufacturer: NEC

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12.1 Functions of Comparator
166
The comparator has the following functions.
(1)
(2)
(3)
(4)
Input voltage comparison by comparator
The comparator compares an input voltage at the reference voltage input pin (CMPREF0) with an input
voltage at the comparator input pin (CMPIN0).
manipulation instructions.
Interrupt generation by comparator output
The comparator output is used to generate an interrupt request signal
Note The rising edge, falling edge, or both rising and falling edges can be specified by setting external
Clock output
When CMPREF0 > CMPIN0, the output of 8-bit timer counter 02 (TM02) is directed to the CMPTOUT0 pin.
Open-drain output selection
Comparator mode register 0 (CMPRM0) is used to specify a port as an N-ch open-drain output.
interrupt mode register 1 (INTM1).
CHAPTER 12 COMPARATOR
User’s Manual U13952EJ3V0UD
The comparison result can be read using memory
Note
(INTCMP0).