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Renesas rl78 User Manual

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RL78/G1A 
CHAPTER  19   RESET  FUNCTION  
Figure 19-5.  Procedure for Checking Reset Source 
<R> 
 
Yes
No
No
After reset acceptance
Power-on-reset/external
reset generated
Internal reset request by the 
watchdog timer generated
Internal reset request 
by the voltage detector generated
No
WDTRF of RESF
register = 1?
Yes
No
Internal reset request by the 
execution of the illegal instruction 
generated
Read the RESF register (clear the RESF register) and store 
the value of the RESF register in any RAM.
TRAP of RESF
register = 1?
Yes
Internal reset request by the 
RAM parity error generated
Yes
LVIRF of RESF
register = 1?
RPERF of RESF
register = 1?
No
Internal reset request by the 
illegal memory access generated
Yes
IAWRF of RESF
register = 1?
Read RESF register
 
 
 
R01UH0305EJ0200  Rev.2.00 
 
 
748  
Jul 04, 2013