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AT89C5131A-RDTIM Datasheet(PDF) 152 Page - ATMEL Corporation

No. de pieza AT89C5131A-RDTIM
Descripción Electrónicos  8-bit Flash Microcontroller with Full Speed USB Device
PDF  186 Pages
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Fabricante Electrónico  ATMEL [ATMEL Corporation]
Página de inicio  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT89C5131A-RDTIM Datasheet(HTML) 152 Page - ATMEL Corporation

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AT89C5130A/31A-M
4337G–USB–11/06
The Power fail detect monitor the supply generated by the voltage regulator and gener-
ate a reset if this supply falls below a safety threshold as illustrated in the Figure 76
below.
Figure 76.
Power Fail Detect
When the power is applied, the Power Monitor immediately asserts a reset. Once the
internal supply after the voltage regulator reach a safety level, the power monitor then
looks at the XTAL clock input. The internal reset will remain asserted until the Xtal1 lev-
els are above and below VIH and VIL. Further more. An internal counter will count 1024
clock periods before the reset is de-asserted.
If the internal power supply falls below a safety level, a reset is immediately asserted.
.
Vcc
t
Reset
Vcc



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