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EM6325 датащи(PDF) 5 Page - EM Microelectronic - MARIN SA

номер детали EM6325
подробное описание детали  Reset Circuit with Manual Reset
PDF  8 Pages
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производитель  EMMICRO [EM Microelectronic - MARIN SA]
домашняя страница  http://www.emmicroelectronic.com
Logo EMMICRO - EM Microelectronic - MARIN SA

EM6325 датащи(HTML) 5 Page - EM Microelectronic - MARIN SA

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EM6325
Copyright
© 2005, EM Microelectronic-Marin SA
5
www.emmicroelectronic.com
Timing Waveforms
Note 6:
tSEN = Maximum Transient Duration. Please refer to figure on the next page.
Note 7:
Overdrive = VTH -VDD. Please refer to figure on the next page.
Manual Reset Input
A logic low on MR asserts a reset. Reset remains asserted while MR is low, and for tPOR (200ms nominal for EM6325C) after
it returns high. MR has an internal 15k
Ω pull-up resistor, so it can be left open if unused. This input can be driven with
CMOS logic levels or with open-drain outputs. Connect a normally open momentary switch from MR to VSS to create a
manual-reset function; debounce circuitry is integrated. If MR is driven from long cable or the device is used in a noisy
environment, connect a 0.1
μF capacitor from MR to VSS to provide additional noise immunity (stronger external additional
pull-up resistor can also be added).
V
DD
0.8V
V
TH
t
t
logic "1"
logic "0"
t
SEN
t
logic "1"
logic "0"
RESET
t
POR
t
MD
V
HYS
RESET
Overdrive
logic "1"
logic "0"
MR
t
PMD
t
t
POR
t
P



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