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SPC58NH84C3 데이터시트(PDF) 44 Page - STMicroelectronics

부품명 SPC58NH84C3
상세설명  SPC58 H Line - 32 bit Power Architecture automotive MCU Triple z4 cores 200 MHz, 10 MBytes Flash, HSM, ASIL-D
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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SPC58NH84C3 데이터시트(HTML) 44 Page - STMicroelectronics

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Electrical characteristics
SPC58EHx, SPC58NHx
44/147
DS12304 Rev 5
4.9
Reset pad (PORST) electrical characteristics
The device implements dedicated bidirectional reset pins as below specified. PORST pin
does not require active control. It is possible to implement an external pull-up to ensure
correct reset exit sequence. Recommended value is 4.7 K
Ω.
Figure 5. Startup Reset requirements
Figure 6
describes device behavior depending on supply signal on PORST:
1.
PORST low pulse has too low amplitude: it is filtered by input buffer hysteresis. Device
remains in current state.
2.
PORST low pulse has too short duration: it is filtered by low pass filter. Device remains
in current state.
3.
PORST low pulse is generating a reset:
a)
PORST low but initially filtered during at least WFRST. Device remains initially in
current state.
b)
PORST potentially filtered until WNFRST. Device state is unknown. It may either
be reset or remains in current state depending on extra condition (temperature,
voltage, device).
c)
PORST asserted for longer than WNFRST. Device is under reset.
VIL
VDD
PORST
VIH
device start-up phase
VDD_POR
PORST driven low by
device reset
forced by external circuitry
PORST undriven
device reset by
internal power-on reset
internal power-on reset



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