I used MK20DX256ZVMC10. Want use reset pin filter function. But no works.
If we make reset pin low level < 5mS, the k20 will not reset. But k20 reset.
Where are the problem?
The RESET pin supports digital filtering in all modes of operation. For LLS and VLLSx
modes, the LLWU provides an optional fixed digital filter running off the 1 kHz LPO
The LPO filter is simple with a fixed filter value count of 3. There is also a synchronizer
on the input signal that results in an associated latency (2 cycles). As such, it takes 5
cycles to complete a transition from low-to-high or high-to-low. The LPO Filter
initializes to off (logic 1) when the LPO filter is not enabled.
SIM_SOPT6 |= (0x02 << 29);