Fujitsu FR81S User Manual

CHAPTER 20: RELOAD TIMER 

 

 

5. Operation 
 

FUJITSU SEMICONDUCTOR LIMITED 

CHAPTER : RELOAD TIMER 
FUJITSU SEMICONDUCTOR CONFIDENTIAL 

34 

Figure 5-7 Single One-shot Operation 

 

0x0001

0xFFFF

0x0000

TMRLRA

-1

-1

Count clock

TTRG(pin)

TTRG pin

effective edge

Counter value

Underflow

UF bit

Reload

Count operation

waiting for

activation trigger

TOUT

(When OUTL=0)

Details of Underflow operation

(When the trigger input and rising edge trigger are selected)

TMRLRA+1
count

TTRG(pin)

CNTE(register)

TTRG pin

effective edge

Underflow

Count operation

waiting for

activation trigger

TOUT

(When OUTL=0)

Single one-shot timer (GATE="1": gate input, TRGM:H input interval count)

Single one-shot timer

(GATE="0": When the trigger input and rising edge trigger are selected)

TTRG(pin)

TRG(register)

CNTE(register)

Underflow

TOUT

(When OUTL=0)

Waiting for

activation trigger

Count operation

waiting for

effective gate input

TMRLRA+1
count

TMRLRA+1
count

TIN (pin) 

TIN (pin) 

TIN pin 

effective edge 

TIN (pin) 

TIN pin 

effective edge 

MN705-00010-1v0-E

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