ATMEGA3290PV-10AUR Atmel, ATMEGA3290PV-10AUR Datasheet - Page 47
ATMEGA3290PV-10AUR
Manufacturer Part Number
ATMEGA3290PV-10AUR
Description
MCU AVR 32K FLASH 10MHZ 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA3290PV-10AUR
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
69
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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10.2.3
10.2.4
8021G–AVR–03/11
Brown-out Detection
Watchdog Reset
ATmega329P/3290P has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
level during operation by comparing it to a fixed trigger level. The trigger level for the BOD can
be selected by the BODLEVEL Fuses. The trigger level has a hysteresis to ensure spike free
Brown-out Detection. The hysteresis on the detection level should be interpreted as V
V
value below the trigger level (V
vated. When V
starts the MCU after the Time-out period t
The BOD circuit will only detect a drop in V
ger than t
Figure 10-5. Brown-out Reset During Operation
When the Watchdog times out, it will generate a short reset pulse of one CK cycle duration. On
the falling edge of this pulse, the delay timer starts counting the Time-out period t
page 48
Figure 10-6. Watchdog Reset During Operation
BOT
+ V
for details on operation of the Watchdog Timer.
HYST
BOD
CC
/2 and V
given in
INTERNAL
TIME-OUT
CC
RESET
RESET
increases above the trigger level (V
V
CC
BOT-
”System and Reset Characteristics” on page
= V
BOT
BOT-
- V
HYST
in
V
CK
BOT-
Figure
/2.When the BOD is enabled, and V
TOUT
CC
if the voltage stays below the trigger level for lon-
has expired.
10-5), the Brown-out Reset is immediately acti-
BOT+
ATmega329P/3290P
in
V
t
TOUT
BOT+
Figure
336.
10-5), the delay counter
CC
decreases to a
TOUT
. Refer to
BOT+
47
CC
=
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