19.5.1 Control A
Name: | CTRLA |
Offset: | 0x00 |
Reset: | From FUSE.WDTCFG |
Property: | Configuration Change Protection |
Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | |
WINDOW[3:0] | PERIOD[3:0] | ||||||||
Access | R/W | R/W | R/W | R/W | R/W | R/W | R/W | R/W | |
Reset | x | x | x | x | x | x | x | x |
Bits 7:4 – WINDOW[3:0] Window
Writing a non-zero value to these bits enables the window mode, and selects the according duration of the closed period.
The bits are optionally lock protected:
- If LOCK bit in WDT.STATUS is '1', all bits are change protected (Access = R)
- If LOCK bit in WDT.STATUS is '0', all bits can be changed (Access = R/W)
Value | Name | Description |
---|---|---|
0x0 | OFF | - |
0x1 | 8CLK | 0.008s |
0x2 | 16CLK | 0.016s |
0x3 | 32CLK | 0.032s |
0x4 | 64CLK | 0.064s |
0x5 | 128CLK | 0.128s |
0x6 | 256CLK | 0.256s |
0x7 | 512CLK | 0.512s |
0x8 | 1KCLK | 1.0s |
0x9 | 2KCLK | 2.0s |
0xA | 4KCLK | 4.1s |
0xB | 8KCLK | 8.2s |
other | - | Reserved |
Bits 3:0 – PERIOD[3:0] Period
Writing a non-zero value to this bit enables the WDT, and selects the according timeout period in normal mode. In window mode, these bits select the duration of the open window.
The bits are optionally lock protected:
- If LOCK in WDT.STATUS is '1', all bits are change protected (Access = R)
- If LOCK in WDT.STATUS is '0', all bits can be changed (Access = R/W)
Value | Name | Description |
---|---|---|
0x0 | OFF | - |
0x1 | 8CLK | 0.008s |
0x2 | 16CLK | 0.016s |
0x3 | 32CLK | 0.032s |
0x4 | 64CLK | 0.064s |
0x5 | 128CLK | 0.128s |
0x6 | 256CLK | 0.256s |
0x7 | 512CLK | 0.512s |
0x8 | 1KCLK | 1.0s |
0x9 | 2KCLK | 2.0s |
0xA | 4KCLK | 4.1s |
0xB | 8KCLK | 8.2s |
other | - | Reserved |