I'm using s9keaz128a MLH 2N45K CTHE 1811G for a automotive project as a motor controller. However the board doesnot running properly as expected. It could not boot. The 5V VCC is OK with no noise, But the #s9keaz128a Reset pin (without capacitor) is poor like this:
and with capacitor ( 2.3V plus Sawtooth Wave noise):
the reset pin(pa5/reset_b 63 pin) circuit:
the reset should be 5V.