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ABOV Semiconductor Co., Ltd.
13.6 External RESETB Input
The External RESETB is the input to a Schmitt trigger. If RESETB pin is held with low for at least 10us over within the
operating voltage range and stable oscillation, it is applied and the internal state is initialized. After reset state becomes
‘1’, it needs the stabilization time with 16ms and after the stable state, the internal RESET becomes ‘1’. The Reset
process step needs 5 oscillator clocks. And the program execution starts at the vector address stored at address
0000H.
Figure 13.7 Timing Diagram after RESET
Figure 13.8 Oscillator generating waveform example
NOTE)
1. As shown Figure 13.8, the stable generating time is not included in the start-up time.
2. The RESETB pin has a pull-up resistor by H/W.
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