ATmega64RZAPV Atmel Corporation, ATmega64RZAPV Datasheet - Page 53

• Manufacturer Part Number: ATmega64RZAPV
• Manufacturer: Atmel Corporation

Specifications of ATmega64RZAPV

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Max I/o Pins: 32
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Crypto Engine: No
• Sram (kbytes): 4
• Eeprom (bytes): 2048
• Operating Voltage (vcc): 1.8 to 3.6
• Timers: 3
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 0.25
• Antenna Diversity: No
• External Pa Control: No
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -101
• Receive Current Consumption (ma): 16.0
• Transmit Current Consumption (ma): 17.0
• Link Budget (dbm): 104

8.5
8.6
8011O–AVR–07/10
Brown-out Detection
Watchdog Reset
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
8-5 on page
trigger level (V
out period t
The BOD circuit will only detect a drop in V
ger than t
Figure 8-5.
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 61
Figure 8-6.
CC
BOT
level during operation by comparing it to a fixed trigger level. The trigger level for the BOD
+ V
for details on operation of the Watchdog Timer.
HYST
BOD
CC
TOUT
53), the Brown-out Reset is immediately activated. When V
/2 and V
given in
Brown-out Reset During Operation
Watchdog Reset During Operation
BOT+
INTERNAL
TIME-OUT
has expired.
RESET
RESET
in
V
CC
BOT-
Figure 8-5 on page
”System and Reset Characteristics” on page
= V
BOT
- V
CC
HYST
decreases to a value below the trigger level (V
V
CK
BOT-
/2.
53), the delay counter starts the MCU after the Time-
CC
if the voltage stays below the trigger level for lon-
ATmega164P/324P/644P
V
t
TOUT
BOT+
331.
CC
increases above the
TOUT
BOT-
. Refer to
in
Figure
BOT+
53
=