AT90LS2343 ATMEL [ATMEL Corporation], AT90LS2343 Datasheet - Page 22
AT90LS2343
Manufacturer Part Number
AT90LS2343
Description
8-Bit Microcontroller with 2K Bytes of In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
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External Reset
22
AT90S/LS2323/2343
Figure 25. MCU Start-up, RESET Tied to V
Figure 26. MCU Start-up, RESET Controlled Externally
An external reset is generated by a low level on the RESET pin. Reset pulses longer
than 50 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
period t
Figure 27. External Reset during Operation
INTERNAL
INTERNAL
TIME-OUT
TIME-OUT
RESET
RESET
RESET
RESET
VCC
VCC
TOUT
RST
has expired.
) on its positive edge, the delay timer starts the MCU after the Time-out
V
V
V
POT
POT
RST
t
TOUT
V
RST
CC
.
t
TOUT
1004D–09/01
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