Setting Of Control Registers For External Event Counter Operation; Setting Procedure For External Event Counter Operation - NEC PD78212 User Manual

8-bit single-chip microcomputer sub-series

Table of Contents

µ PD78214 Sub-Series

Fig. 7-116 Setting of Control Registers for External Event Counter Operation

Fig. 7-117 Setting Procedure for External Event Counter Operation

(a) Prescaler mode register 1 (PRM1)

(b) External interrupt mode register 0 (INTM0)

Specify valid edge of C1 pin input

Specifies external clock input (C1)

Specifies valid edge of C1 input as rising edge

Overflow flag

Enables counting

Event counter

Set PRM1 register

Start counting

; Sets bit 7 of TMC1 to 1