Fujitsu FR81S Manuel D’Utilisation
CHAPTER 7: RESET
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER :
RESET
FUJITSU SEMICONDUCTOR CONFIDENTIAL
27
5.2.9. Software Reset (RSTCR:SRST)
The software reset (RSTCR:SRST) is shown.
It is a software reset generated inside of the device.
This reset will be issued when you read RSTCR after writing "1" to the bit0: SRST bit of the RSTCR.
Resets due to this reset factor will be detected as an irregular reset only at the time of reset timeout. Other than
the irregular reset detection, a reset (RST) will be issued.
[Example] Sample program of a software reset issue
LDI
#value_of_reset, R0
; SRST bit=1
LDI
#_RSTCR, R12
;
STB
R0, @R12
; Write
LDUB
@R12, R0
; Read (generation of a software reset request)
MOV
R0, R0
; Dummy processing for pipeline adjustment
NOP
; Dummy processing for pipeline adjustment
MB91520 Series
MN705-00010-1v0-E
280