24.8.3 Early Warning Control

The Register reset value is loaded from the NVM User Row at start-up.

Name: EWCTRL
Offset: 0x02
Reset: 0
Property: PAC Write-Protection

Bit 76543210 
     EWOFFSET[3:0] 
Access R/WR/WR/WR/W 
Reset 0000 

Bits 3:0 – EWOFFSET[3:0] Early Warning Interrupt Time Offset

These bits determine the number of GCLK_WDT clock cycles between the start of the watchdog time-out period and the generation of the Early Warning interrupt. These bits are loaded from NVM User Row at start-up. Refer to NVM User Row Mapping.
ValueNameDescription
0x0 CYC8 8 clock cycles
0x1 CYC16 16 clock cycles
0x2 CYC32 32 clock cycles
0x3 CYC64 64 clock cycles
0x4 CYC128 128 clock cycles
0x5 CYC256 256 clock cycles
0x6 CYC512 512 clock cycles
0x7 CYC1024 1024 clock cycles
0x8 CYC2048 2048 clock cycles
0x9 CYC4096 4096 clock cycles
0xA CYC8192 8192 clock cycles
0xB CYC16384 16384 clock cycles
0xC - 0xF - Reserved