Renesas rl78 User Manual

 

RL78/G1A 

 

CHAPTER  8   INTERVAL  TIMER 

When setting the RINTE bit to 1 to start operation of the counter after returning from the HALT or STOP mode and then 

shifting to the HALT or STOP mode again, either confirm that the value written to the RINTE bit (1) has been applied, or 

make sure that at least one count clock cycle elapses between returning from HALT or STOP mode and shifting to HALT 

or STOP mode again. 

 

•  After setting RINTE to 1, confirm that the RINTE bit value is actually 1 by polling the bit, and then shift to the HALT or 

STOP mode (see Example 1 in Figure 8-6). 

•  After setting RINTE to 1, wait for at least one cycle of the count clock to elapse before shifting to the HALT or STOP 

mode (see Example 2 in Figure 8-6). 

 

 

RINTE = 1 

HALT instruction execution 

STOP instruction execution 

Waiting at least for one 

count clock 

Restoring from HALT mode 

Restoring from STOP mode 

Shifts to HALT mode 

or STOP mode 

At least for one count 

clock from restore 

Yes

RINTE = 1 

No 

RINTE = 1?

Sets to counter operation 

start 

Checks the counter 

operation start

HALT instruction execution 

STOP instruction execution 

Shifts to HALT mode or 

STOP mode 

Restoring from HALT mode 

Restoring from STOP mode 

Example 1 

Example 2 

 

R01UH0305EJ0200  Rev.2.00 

 

 

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Jul 04, 2013