User manual
...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 118
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Bit Name Reset Access Description
Value Mode Description
1 FULL Full voltage regulator drive strength in EM2 and EM3.
10.5.2 EMU_MEMCTRL - Memory Control Register
Offset Bit Position
0x004
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
Access
RW
Name
POWERDOWN
Bit Name Reset Access Description
31:3 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
2:0 POWERDOWN 0x0 RW RAM block power-down
Individual 32KB RAM block power-down. When a block is powered down, it cannot be powered up again. The block will be powered
up after the reset. Block 0 (address range 0x20000000-0x20007FFF) may never be powered down.
Value Mode Description
4 BLK3 Power down RAM block 3 (address range 0x20018000-0x2001FFFF)
6 BLK23 Power down RAM blocks 2-3 (address range 0x20010000-0x2001FFFF)
7 BLK123 Power down RAM blocks 1-3 (address range 0x20008000-0x2001FFFF)
10.5.3 EMU_LOCK - Configuration Lock Register
Offset Bit Position
0x008
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
0x0000
Access
RW
Name
LOCKKEY
Bit Name Reset Access Description
31:16 Reserved
To ensure compatibility with future devices, always write bits to 0. More information in Section 2.1 (p. 3)
15:0 LOCKKEY 0x0000 RW Configuration Lock Key
Write any other value than the unlock code to lock all EMU registers, except the interrupt registers, from editing. Write the unlock
code to unlock. When reading the register, bit 0 is set when the lock is enabled.
Mode Value Description
Read Operation
UNLOCKED 0 EMU registers are unlocked
LOCKED 1 EMU registers are locked
Write Operation
LOCK 0 Lock EMU registers
UNLOCK 0xADE8 Unlock EMU registers