Eurotech BRI ISDN Manuale Utente Pagina 38

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Am186™CC Microcontroller Router Reference Design Users Manual
2-12
Am186
CC Microcontroller Reset
NOTE: See sheet 10 in the schematics for the reset circuitry.
The Am186CC microcontroller requires the RES
input to be asserted for at least
1 ms to allow the internal circuitry to stabilize. The Am186CC microcontroller
router reference design uses an external device that monitors the 3.3-V V
CC
to
provide a reset output with an internal 21-ms RC delay to drive the 3.3-V RES
input to the Am186CC microcontroller. Depressing the reset switch (SW1 at
location E-9) causes a system reset without cycling power.
about.book Page 12 Wednesday, July 21, 1999 11:10 AM
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