ATMEGA48V_06 ATMEL [ATMEL Corporation], ATMEGA48V_06 Datasheet - Page 46
ATMEGA48V_06
Manufacturer Part Number
ATMEGA48V_06
Description
8-bit Microcontroller with 8K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA48V_06.pdf
(374 pages)
- Current page: 46 of 374
- Download datasheet (4Mb)
9.3
46
Power-on Reset
ATmega48/88/168
Figure 9-1.
A Power-on Reset (POR) pulse is generated by an On-chip detection circuit. The detection level
is defined in
V
well as to detect a failure in supply voltage.
A Power-on Reset (POR) circuit ensures that the device is reset from Power-on. Reaching the
Power-on Reset threshold voltage invokes the delay counter, which determines how long the
device is kept in RESET after V
when V
Figure 9-2.
CC
is below the detection level. The POR circuit can be used to trigger the start-up Reset, as
INTERNAL
TIME-OUT
BODLEVEL [2..0]
RSTDISBL
CC
RESET
RESET
V
decreases below the detection level.
CC
”System and Reset Characteristics” on page
Reset Logic
MCU Start-up, RESET Tied to V
Pull-up Resistor
FILTER
SPIKE
V
V
POT
RST
CC
t
TOUT
CKSEL[3:0]
rise. The RESET signal is activated again, without any delay,
Power-on Reset
Reset Circuit
SUT[1:0]
Brown-out
Watchdog
Oscillator
Generator
Circuit
Clock
CK
CC
Register (MCUSR)
MCU Status
DATA BUS
Delay Counters
307. The POR is activated whenever
TIMEOUT
2545J–AVR–12/06
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