Setting Of Control Registers For Interval Timer Operation (1); Setting Procedure For Interval Timer Operation (1) - NEC PD78212 User Manual

8-bit single-chip microcomputer sub-series

Table of Contents

Fig. 7-97 Setting of Control Registers for Interval Timer Operation (1)

(a) Prescaler mode register 1 (PRM1)

PRS22 PRS21 PRS20

(b) Capture /compare control register 0 (CRC0)

Fig. 7-98 Setting Procedure for Interval Timer Operation (1)

Interval timer (1)

Set PRM1 register

Set count value in CR20 register

Set CRC2 register

Set TMC1 register

INTC20 interrupt

Chapter 7 Timer/Counter Units

Specifies count clock

; where x = 16, 32, 64,

128, 256, 512,

or external clock)

Disables clearing TM2

Both TO2 and TO3 are used for

toggle output

Overflow flag

Enables counting

; Sets bit 7 of TMC1 to 1

Sets normal mode (CMD2 = 0)