ATMEGA64M1-AU Atmel, ATMEGA64M1-AU Datasheet - Page 45

• Manufacturer Part Number: ATMEGA64M1-AU
• Description: IC MCU AVR 64K FLASH 32TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64M1-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: CAN, LIN, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K x 8
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 11x10b; D/A 1x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-TQFP, 32-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Lead Free Status / Rohs Status: Details

10.2.4
10.3
10.3.1
8209D–AVR–11/10
Internal Voltage Reference
Watchdog Reset
Voltage Reference Enable Signals and Start-up Time
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
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Figure 10-6. Watchdog Reset During Operation
ATmega16M1/32M1/64M1 features an internal bandgap reference. This reference is used for
Brown-out DetectionDetection, and it can be used as an input to the Analog Comparators or the
ADC. The V
internal bandgap reference.
The voltage reference has a start-up time that may influence the way it should be used. The
start-up time is given in
reference is not always turned on. The reference is on during the following situations:
1. When the BOD is enabled (by programming the BODLEVEL [2..0] Fuse)
2. When the bandgap reference is connected to the Analog Comparator (by setting the
3. When the ADC is enabled
4. When the DAC is enabled
ACBG bit in ACSR)
for details on operation of the Watchdog Timer.
REF
CC
2.56V reference to the ADC, DAC or Analog Comparators is generated from the
INTERNAL
TIME-OUT
RESET
RESET
V
CC
“System and Reset Characteristics” on page
V
CK
BOT-
ATmega16M1/32M1/64M1
V
t
TOUT
BOT+
311. To save power, the
TOUT
. Refer to
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