Renesas rl78 User Manual

 

RL78/G1A 

CHAPTER  19   RESET  FUNCTION  

Remark  f

IH

: 

High-speed on-chip oscillator clock 

 

f

X

: 

X1 oscillation clock 

 

f

EX

:  External main system clock 

 

f

XT

: XT1 

oscillation 

clock 

 

f

EXS

:  External subsystem clock 

 

f

IL

: 

Low-speed on-chip oscillator clock 

 

Hardware After 

Reset 

Acknowledgment

 

Program counter (PC) 

The contents of the 
reset vector table 
(0000H, 0001H) are set.

Stack pointer (SP) 

Undefined 

Program status word (PSW) 

06H 

Data memory 

Undefined 

RAM 

General-purpose registers 

Undefined 

Note  During reset signal generation or oscillation stabilization time wait, only the PC contents among the hardware 

statuses become undefined.  All other hardware statuses remain unchanged after reset. 

Remark  For the state of the special function register (SFR) after receiving a reset signal, see 3.1.4  Special function 

egister (SFR) area and 3.1.5  Extended special function register (2nd SFR: 2nd Special Function 

Register) area. 

  

R01UH0305EJ0200  Rev.2.00 

 

 

745  

Jul 04, 2013