Datasheet
26
ATmega323(L)
1457E–11/01
Figure 24. Reset Logic
Notes: 1. Values are guidelines only. Actual values are TBD.
2. The Power-on Reset will not work unless the supply voltage has been below V
POT
(falling)
Table 5. Reset Characteristics
(1)
Symbol Parameter Condition Min Typ Max Units
V
POT
Power-on Reset Threshold
Voltage (rising)
1.0 1.4 1.8 V
Power-on Reset Threshold
Voltage (falling)
(2)
0.4 0.6 0.8 V
V
RST
RESET Pin Threshold
Voltage
--0.85 V
CC
V
V
BOT
Brown-out Reset
Threshold Voltage
(BODLEVEL = 1) 2.4 2.7 3.2
V
(BODLEVEL = 0) 3.5 4.0 4.5
MCU Control and Status
Register (MCUCSR)
Brown-Out
Reset Circuit
BODEN
BODLEVEL
Delay Counters
CKSEL[3:0]
CK
TIMEOUT
WDRF
BORF
EXTRF
PORF
DATA BUS
Clock
Generator
SPIKE
FILTER
100-500kΩ
JTRF
JTAG Reset
Register