176
MC95FG308 / MC95FG208
ABOV Semiconductor Co., Ltd.
13.6 External RESETB Input
The External RESETB is the input to a Schmitt trigger. A reset in accomplished by holding the reset pin low for at least
7us over, within the operating voltage range and oscillation stable, 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.
OSC START TIMING
PRESCALER COUNT START
VDD
OSC
ADDRESS
BUS
CORE
BUS
Main Program
Stabilization Time
TST = 16ms
𝐓𝐒𝐓 =
𝟏
𝐟𝐎𝐒𝐂 ÷ 𝟐𝟎𝟒𝟖
× 𝟐𝟓𝟔
?
RESETB
Release
Internal
RESETB
Release
1
2 3 4 5
?
00
01
02
?
?
?
?
?
?
? 02
RESET
Process
Step
Содержание MC95FG208 Series
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Страница 23: ...23 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 10 16 Pin SOP Package...
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