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NEC PD78214 User Manual

Page 159

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130

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PD78214 Sub-Series

Fig. 7-25 Setting of Control Registers for Interval Timer Operation (1)

(a) Timer control register 0 (TMC0)

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

7

6

5

4

3

2

1

0

0

0

0

0

0

0

0

1

CRC0

Disables clearing TM0

Both TO0 and TO1 are used for
toggle output

Fig. 7-26 Setting Procedure for Interval Timer Operation (1)

Interval
timer (1)

Set count value in CR00 register

Set CRC0 register

Start counting

; Sets bit 3 of TMC0 to 1

INTC00 interrupt

CR0

←1

CRC0

←10H

CR00

←n

7

6

5

4

3

2

1

0

0

0

0

0

0

0

1

TMC0

Overflow flag

Enables counting TM0

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