Attiny15l – Rainbow Electronics ATtiny15L User Manual
Page 14
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14
ATtiny15L
1187E–AVR–06/02
Figure 12. Reset Logic
Note:
1. The Power-on Reset will not work unless the supply voltage has been below V
POT
(falling).
Table 4. Reset Characteristics (V
CC
= 5.0V)
(1)
Symbol
Parameter
Condition
Min
Typ
Max
Units
V
POT
Power-on Reset Threshold
Voltage (rising)
BOD disabled
1.0
1.4
1.8
V
BOD enabled
1.7
2.2
2.7
V
Power-on Reset Threshold
Voltage (falling)
(1)
BOD disabled
0.4
0.6
0.8
V
BOD enabled
1.7
2.2
2.7
V
V
RST
RESET Pin Threshold
Voltage
–
–
0.85 V
CC
V
V
BOT
Brown-out Reset Threshold
Voltage
(BODLEVEL = 1)
2.6
2.7
2.8
V
(BODLEVEL = 0)
3.8
4.0
4.2
V
MCU Status
Register (MCUSR)
Brown-out
Reset Circuit
BODEN
BODLEVEL
Delay Counters
CKSEL[1:0]
CK
TIMEOUT
WDRF
BORF
EXTRF
PORF
DATA BUS
Tunable Internal
Oscillator
Watchdog
Oscillator
Watchdog
Timer
Reset Circuit
Power-on Reset
Circuit
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