ATMEGA324P-15AZ Atmel, ATMEGA324P-15AZ Datasheet - Page 52
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ATMEGA324P-15AZ
Manufacturer Part Number
ATMEGA324P-15AZ
Description
MCU AVR 32K FLASH 15MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA324P-15AZ
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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9.0.5
9.0.6
52
ATmega164P/324P/644P
Brown-out Detection
Watchdog Reset
Figure 9-2.
ATmega164P/324P/644P has an On-chip Brown-out Detection (BOD) circuit for monitoring the
V
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
When the BOD is enabled, and V
9-3 on page
trigger level (V
Time-out period t
The BOD circuit will only detect a drop in V
ger than t
Figure 9-3.
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 60
CC
BOT
level during operation by comparing it to a fixed trigger level. The trigger level for the BOD
+ V
HYST
for details on operation of the Watchdog Timer.
BOD
CC
52), the Brown-out Reset is immediately activated. When V
/2 and V
given in
External Reset During Operation
Brown-out Reset During Operation
INTERNAL
TIME-OUT
BOT+
TOUT
RESET
RESET
V
in
CC
BOT-
has expired.
“System and Reset Characteristics” on page
Figure 9-3 on page
= V
BOT
- V
CC
HYST
decreases to a value below the trigger level (V
V
BOT-
/2.
CC
52), the delay counter starts the MCU after the
if the voltage stays below the trigger level for lon-
V
t
TOUT
BOT+
332.
CC
increases above the
TOUT
7674F–AVR–09/09
BOT-
. Refer to
in
Figure
BOT+
=
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