at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 51

• Manufacturer Part Number: at90pwm81-16se
• Description: 8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
• Manufacturer: ATMEL Corporation

8.1.4
7734M–AVR–03/10
External Reset
Figure 8-2.
Figure 8-3.
An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the minimum
pulse width (see
guaranteed to generate a reset. When the applied signal reaches the Reset Threshold Voltage – V
its positive edge, the delay counter starts the MCU after the Time-out period – t
Figure 8-4.
INTERNAL
INTERNAL
TIME-OUT
TIME-OUT
RESET
RESET
RESET
RESET
V
V
MCU Start-up, RESET Tied to V
MCU Start-up, RESET Extended Externally
External Reset During Operation
CC
CC
CC
Table
8-1) will generate a reset, even if the clock is not running. Shorter pulses are not
V
V
V
POT
POT
RST
t
TOUT
CC
V
RST
t
TOUT
AT90PWM81
TOUT
– has expired.
RST
– on
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