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MAXQ618 Scheda tecnica(PDF) 21 Page - Maxim Integrated Products

Il numero della parte MAXQ618
Spiegazioni elettronici  16-Bit Microcontroller with Infrared Module
PDF  26 Pages
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Produttore elettronici  MAXIM [Maxim Integrated Products]
Homepage  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAXQ618 Scheda tecnica(HTML) 21 Page - Maxim Integrated Products

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MAXQ618
16-Bit Microcontroller with Infrared Module
21
Table 3. Power-Fail Detection States During Normal Operation
STATE
POWER-FAIL
INTERNAL
REGULATOR
CRYSTAL
OSCILLATOR
SRAM
RETENTION
COMMENTS
A
On
Off
Off
—
VDD < VPOR.
B
On
On
On
—
VPOR < VDD < VRST.
Crystal warmup time, tXTAL_RDY.
CPU held in reset.
C
On
On
On
—
VDD > VRST.
CPU normal operation.
D
On
On
On
—
Power drop too short.
Power-fail not detected.
E
On
On
On
—
VRST < VDD < VPFW.
PFI is set when VRST < VDD < VPFW and
maintains this state for at least tPFW, at which
time a power-fail interrupt is generated (if
enabled).
CPU continues normal operation.
F
On
(Periodically)
Off
Off
Yes
VPOR < VDD < VRST.
Power-fail detected.
CPU goes into reset.
Power-fail monitor turns on periodically.
G
On
On
On
—
VDD > VRST.
Crystal warmup time, tXTAL_RDY.
CPU resumes normal operation from 8000h.
H
On
(Periodically)
Off
Off
Yes
VPOR < VDD < VRST.
Power-fail detected.
CPU goes into reset.
Power-fail monitor turns on periodically.
I
Off
Off
Off
—
VDD < VPOR.
Device held in reset. No operation allowed.



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