ATMEGA165V_14 Datasheet, PDF (38/336 Pages) ATMEL Corporation – High Performance, Low Power AVR

ATmega165/V
Figure 14. Reset Logic
DATA BUS
MCU Status
Register (MCUSR)
Power-on Reset
Circuit
BODLEVEL [2..0]
Pull-up Resistor
SPIKE
FILTER
Brown-out
Reset Circuit
JTAG Reset
Register
Watchdog
Oscillator
Clock
CK
Generator
CKSEL[3:0]
SUT[1:0]
Delay Counters
TIMEOUT
Table 16. Reset Characteristics
Symbol
V_POT
V_RST
t_RST
Parameter
Power-on Reset Threshold
Voltage (rising)
Power-on Reset Threshold
Voltage (falling)⁽¹⁾
RESET Pin Threshold Voltage
Minimum pulse width on
RESET Pin
Condition Min Typ
T_A = -40°C
to 85°C
0.7
1.0
T_A = -40°C
to 85°C
0.6
0.9
V_CC = 3V 0.2 V_CC
V_CC = 3V
Max
1.4
1.3
0.9 V_CC
2.5
Units
V
V
V
µs
Notes: 1. The Power-on Reset will not work unless the supply voltage has been below V_POT
(falling)
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2573G–AVR–07/09