ATMEGA64RZAV-10PU Atmel, ATMEGA64RZAV-10PU Datasheet - Page 47

• Manufacturer Part Number: ATMEGA64RZAV-10PU
• Description: MCU ATMEGA644/AT86RF230 40-DIP
• Manufacturer: Atmel
• Series: ATMEGAr

Specifications of ATMEGA64RZAV-10PU

• Frequency: 2.4GHz
• Modulation Or Protocol: 802.15.4 Zigbee
• Power - Output: 3dBm
• Sensitivity: -101dBm
• Voltage - Supply: 1.8 V ~ 3.6 V
• Data Interface: PCB, Surface Mount
• Memory Size: 64kB Flash, 2kB EEPROM, 4kB RAM
• Antenna Connector: PCB, Surface Mount
• Package / Case: 40-DIP (0.600", 15.24mm)
• Wireless Frequency: 2.4 GHz
• Interface Type: JTAG, SPI
• Output Power: 3 dBm
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATAVRISP2 - PROGRAMMER AVR IN SYSTEMATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Operating Temperature: -
• Applications: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Current - Receiving: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: ATmega64

9.2.2
9.2.3
2593N–AVR–07/10
External Reset
Brown-out Detection
Figure 9-3.
An External Reset is generated by a low level on the RESET pin. Reset pulses longer than the
minimum pulse width (see
reset, even if the clock is not running. Shorter pulses are not guaranteed to generate a reset.
When the applied signal reaches the Reset Threshold Voltage – V
delay counter starts the MCU after the Time-out period – t
Figure 9-4.
ATmega644 has an On-chip Brown-out Detection (BOD) circuit for monitoring the V
ing 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
When the BOD is enabled, and V
9-5), the Brown-out Reset is immediately activated. When V
(V
expired.
The BOD circuit will only detect a drop in V
ger than t
BOT
BOT+
INTERNAL
TIME-OUT
+ V
in
RESET
RESET
HYST
BOD
V
Figure
CC
CC
/2 and V
given in
MCU Start-up, RESET Extended Externally
External Reset During Operation
9-5), the delay counter starts the MCU after the Time-out period t
BOT-
”System and Reset Characteristics” on page
= V
V
”System and Reset Characteristics” on page
POT
BOT
- V
CC
HYST
decreases to a value below the trigger level (V
/2.
CC
if the voltage stays below the trigger level for lon-
V
RST
t
TOUT
TOUT
CC
– has expired.
increases above the trigger level
RST
320.
– on its positive edge, the
ATmega644
320) will generate a
BOT-
CC
level dur-
TOUT
in
BOT+
Figure
has
47
=