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AT90LS4433-4AI Datasheet(PDF) 22 Page - ATMEL Corporation

Part # AT90LS4433-4AI
Description  8-Bit AVR Microcontroller with 4K Bytes of In-System Programmable Flash
PDF  126 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

AT90LS4433-4AI Datasheet(HTML) 22 Page - ATMEL Corporation

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AT90S/LS4433
1042H–AVR–04/03
Figure 24. 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)
Symbol
Parameter
Min
Typ
Max
Units
V
POT
(1)
Power-on Reset
Threshold
Voltage, rising
1.0
1.4
1.8
V
Power-on Reset
Threshold
Voltage, falling
0.4
0.6
0.8
V
V
RST
RESET Pin
Threshold
Voltage
0.6 V
CC
V
V
BOT
Brown-out Reset
Threshold
Voltage
2.2
(BODLEVEL=1)
2.7
(BODLEVEL=1)
3.0
(BODLEVEL=1)
V
3.5
(BODLEVEL=0)
4.0
(BODLEVEL=0)
4.5
(BODLEVEL=0)
MCU Status
Register (MCUSR)
Brown-out
Reset Circuit
Power-on Reset
Circuit
BODEN
BODLEVEL
Delay Counters
CKSEL[2:0]
CK
Full
DATA BUS
Reset Circuit
Watchdog
Timer
On-chip
RC Oscillator
RESET
VCC



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