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2 internal clock/one-shot mode – FUJITSU MB91460 SERIES FR60 User Manual

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Chapter 38 Reload Timer

5.Operation

5.2 Internal Clock/One-shot Mode

In one-shot mode, a one-shot pulse is output.

(1)

Set reload value to reload register

(2)

Enable reload timer count operation

(3)

TOT pin output

(4)

Generate reload trigger (activation): soft trigger or external event trigger

(5)

Load reload value

(6)

Square wave output (during count, “H” output/OUTL=“0”)

(7)

Counter count down (internal clock synchronous)

(8)

Generate counter underflow

(9)

Return TOT pin output level

(10)

Count stop, wait for next activation trigger

(See “

8. Caution (Page No.794)

”.)

FFFF

-1

0000

FFFF

-1

T = CLKP

OUTL=0

OUTL=1

TMRLR

(1)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(2)

(5)

(10)

Count clock

Activation trigger
(Soft or external event)

Underflow

Output only once

Reload

data

Reload

data

Data load

When RELD=0

[Reload register setting value + 1]

Counter

TOT output waveform

CNTE bit

Count

Count start

Reload data