Rainbow Electronics ATtiny15L - Manual (Page 16)

16
ATtiny15L
1187E–AVR–06/02
Figure 13. “MCU Start-up, RESET Tied to V
CC
Figure 14. 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 15. 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