User manual
...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 121
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Bit Name Reset Access Description
Value Mode Description
1 RES1 Main power and backup power connected with RES1 series resistance.
2 RES2 Main power and backup power connected with RES2 series resistance.
3 RES3 Main power and backup power connected with RES3 series resistance.
2 VOUTSTRONG 0 RW BU_VOUT strong enable.
Enable strong switch between backup domain power supply and BU_VOUT
1 VOUTMED 0 RW BU_VOUT medium enable.
Enable medium switch between backup domain power supply and BU_VOUT
0 VOUTWEAK 0 RW BU_VOUT weak enable.
Enable weak switch between backup domain power supply and BU_VOUT
10.5.8 EMU_BUINACT - Backup mode inactive configuration register.
Offset Bit Position
0x038
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
0x0
0x0
0x0
Access
RW
RW
RW
Name
PWRCON
BUENRANGE
BUENTHRES
Bit Name Reset Access Description
31:7 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
6:5 PWRCON 0x0 RW Power connection configuration when not in Backup mode
Value Mode Description
0 NONE No connection.
1 BUMAIN Main power and backup power are connected through a diode, allowing current to flow
from backup power source to main power source, but not the other way.
2 MAINBU Main power and backup power are connected through a diode, allowing current to flow
from main power source to backup power source, but not the other way.
3 NODIODE Main power and backup power are connected without diode.
4:3 BUENRANGE 0x0 RW
Threshold range for Backup BOD sensing on VDD_DREG when not in backup mode.
2:0 BUENTHRES 0x0 RW
Threshold for Backup BOD sensing on VDD_DREG when not in backup mode.
10.5.9 EMU_BUACT - Backup mode active configuration register.
Offset Bit Position
0x03C
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Reset
0x0
0x0
0x0
Access
RW
RW
RW
Name
PWRCON
BUEXRANGE
BUEXTHRES