Rainbow-electronics ATmega163L Uživatelský manuál stáhnout pdf (Strana 24)

ATmega163(L)

24

Figure 25. MCU Start-up, RESET

Tied to VCC.

Figure 26. MCU Start-up, RESET

Extended Externally

External Reset

An external reset is generated by a low level on the RESET

pin. Reset pulses longer than 500 ns will generate a reset,

even if the clock is not running. Shorter pulses are not guaranteed to generate a reset. When the applied signal reaches the

Reset Threshold Voltage - V

RST

on its positive edge, the delay timer starts the MCU after the Time-out period t

TOUT

has

expired.

Figure 27. External Reset During Operation

VCC

RESET

TIME-OUT

INTERNAL

RESET

t

TOUT

V

POT

V

RST

VCC

RESET

TIME-OUT

INTERNAL

RESET

t

TOUT

V

POT

V

RST

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 155 156

Komentáře k této Příručce

Žádné komentáře