Setting Procedure For Pulse Width Measurement; Interrupt Request Handling For Pulse Width Calculation - NEC PD78212 User Manual

8-bit single-chip microcomputer sub-series

Table of Contents

µ PD78214 Sub-Series

Fig. 7-34 Interrupt Request Handling for Pulse Width Calculation

Fig. 7-33 Setting Procedure for Pulse Width Measurement

Set CRC0 register

Set INTM1 register and

MK0L register

Initialize buffer memory for capture value

Start counting

Enable interrupt

INTP3 interrupt

Calculation of pulse width

Yn = CR02 – Xn

Store captured value in memory

Specifies valid edge of INTP3 input

to be rising and falling edges

× : Don't care

INTP3 interrupt

; Specifies valid edge of

INTP3 input to be both

edges and unmasks interrupt

; Sets bit 3 of TMC0 to 1