Fujitsu FR81S User Manual
CHAPTER 30: POWER CONSUMPTION CONTROL
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : POWER CONSUMPTION CONTROL
FUJITSU SEMICONDUCTOR CONFIDENTIAL
54
*3:
When standby (power-shutdown) transition is directed after the operating clock source is missing, it
usually becomes standby processing. Moreover, it is necessary to note it because the function of CSV
stops when the power-shutdown permission is enabled with the operating clock source is not missing.
Only a part of registers is maintained at returning, because the power supply is not supplied to almost all
blocks inside in standby mode with power-shutdown Table 5-2 shows the list of registers that are stored at
return from standby mode with power-shutdown).
Table 5-2 List of Registers those are stored at Return from Standby Mode with
Power-shutdown
Register group
Register, flag name
Type
Address
Remarks
PMU register
PMUSTR.PMUST
Flag
0590
H
bit7
PMUSTR.PONR_F
Flag
0590
H
bit1
PMUSTR.RSTX_F
Flag
0590
H
bit0
PMUCTLR
Register
0591
H
PWRTMCTL
Register
0592
H
PMUINTF0
Register
0594
H
PMUINTF1
Register
0595
H
PMUINTF2
Register
0596
H
Reset source register
CPUAR.PMDF
Flag
051A
H
bit2
CPUAR.PSTF
Flag
051A
H
bit1
CPUAR.HWDF
Flag
051A
H
bit0
Low-voltage detection setting
register (External low-voltage
detection)
LVD5R.LVD5R_F
Flag
0584
H
bit0
LVD5F.LVD5F_F
Flag
0585
H
bit0
LVD5F.LVD5F_PD
Register
0585
H
bit7
LVD5F.LVD5F_OE
Register
0585
H
bit3
Low-voltage detection setting
register (Internal low-voltage
detection)
LVD.LVD_F
Flag
0586
H
bit0
LVD.LVD_PD
Register
0586
H
bit7
LVD.LVD_OE
Register
0586
H
bit3
CSV register
CSVCR
Register
056D
H
External interrupt register
EIRR0/1
Register
0550
H
/0554
H
*3
ENIR0/1
Register
0551
H
/0555
H
*3
ELVR0/1
Register
0552
H
/0556
H
*3
RTC register
WTDR
Register
055E
H
-055F
H
WTCR
Register
0561
H
-0563
H
*1
WTBR
Register
0565
H
-0567
H
*1
WTHR
Register
0568
H
WTMR
Register
0569
H
WTSR
Register
056A
H
Clock selection register
CSELR.SCEN
Flag
0510
H
bit7
*1,*2
CMONR.SCRDY
Flag
0511
H
bit7
*1,*2
CCRTSELR.CST
Flag
0530
H
bit7
*1,*2
CCRTSELR.CSC
Flag
0530
H
bit0
*1,*2
*1: These registers are initialized at return from stop mode with power-shutdown.
*2: These registers are for the dual clock products.
*3: It is initialized at PMUCTLR.IOCTMD=0.
MB91520 Series
MN705-00010-1v0-E
1141