ATMEga64L ATMEL Corporation, ATMEga64L Datasheet - Page 50

• Manufacturer Part Number: ATMEga64L
• Description: 8-bit AVR Microcontroller with 64K Bytes In-System Programmable Flash
• Manufacturer: ATMEL Corporation

50
ATmega64(L)
Figure 22. Reset Logic
Table 19. Reset Characteristics
Symbol
V
BODLEVEL
V
V
V
t
t
BOD
RST
HYST
POT
RST
BOT
RESET
BODEN
PEN
Parameter
Power-on Reset
Threshold Voltage
(rising)
Power-on Reset
Threshold Voltage
(falling)
Voltage
Minimum pulse width on
RESET Pin
Brown-out Reset
Threshold Voltage
Minimum low voltage
period for Brown-out
Detection
Brown-out Detector
hysteresis
RESET Pin Threshold
Pull-up Resistor
Pull-up Resistor
(1)
Power-On Reset
JTAG Reset
Register
FILTER
SPIKE
D
L
Circuit
Q
Q
(2)
CKSEL[3:0]
SUT[1:0]
Watchdog
Watchdog
Oscillator
Generator
Timer
Clock
Reset Circuit
Reset Circuit
BODLEVEL = 1
BODLEVEL = 0
BODLEVEL = 1
BODLEVEL = 0
Brown-Out
Condition
CK
MCU Control and Status
Register (MCUCSR)
DATA BUS
Delay Counters
0.2 V
Min
2.5
3.7
CC
Typ
120
1.4
1.3
2.7
4.0
50
2
2
TIMEOUT
0.85 V
Max
2.3
2.3
3.2
4.5
2490G–AVR–03/04
CC
Units
mV
ns
µs
µs
V
V
V
V