User manual
...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 122
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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 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 BUEXRANGE 0x0 RW
Threshold range for Backup BOD sensing on VDD_DREG when in backup mode.
2:0 BUEXTHRES 0x0 RW
Threshold for Backup BOD sensing on VDD_DREG when in backup mode.
10.5.10 EMU_STATUS - status register
Offset Bit Position
0x040
31
30
29
28
27
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25
24
23
22
21
20
19
18
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3
2
1
0
Reset
0
Access
R
Name
BURDY
Bit Name Reset Access Description
31:1 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
0 BURDY 0 R Backup mode ready.
Set when the Backup power functionality is ready.
10.5.11 EMU_ROUTE - I/O Routing Register
Offset Bit Position
0x044
31
30
29
28
27
26
25
24
23
22
21
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2
1
0
Reset
1
Access
RW
Name
BUVINPEN
Bit Name Reset Access Description
31:1 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
0 BUVINPEN 1 RW BU_VIN Pin Enable
When set, the BU_VIN pin is enabled