ATMEGA16M1-MU Atmel, ATMEGA16M1-MU Datasheet - Page 44

• Manufacturer Part Number: ATMEGA16M1-MU
• Description: IC MCU AVR 16K FLASH 32VQFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16M1-MU

• 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: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K 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-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -

10.2.2
10.2.3
44
ATmega16M1/32M1/64M1
External Reset
Brown-out Detection
Figure 10-3. MCU Start-up, RESET Extended Externally
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 10-4. External Reset During Operation
ATmega16M1/32M1/64M1 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
When the BOD is enabled, and V
10-5 on page
trigger level (V
out period t
The BOD circuit will only detect a drop in V
ger than t
CC
BOT+
level during operation by comparing it to a fixed trigger level. The trigger level for the BOD
= V
INTERNAL
TIME-OUT
BOD
BOT
TOUT
RESET
RESET
+ V
given in
45), the Brown-out Reset is immediately activated. When V
V
BOT+
CC
CC
has expired.
HYST
in
/2 and V
Figure 10-5 on page
“System and Reset Characteristics” on page
“System and Reset Characteristics” on page
BOT-
V
POT
CC
= V
decreases to a value below the trigger level (V
BOT
- V
45), the delay counter starts the MCU after the Time-
CC
HYST
if the voltage stays below the trigger level for lon-
/2.
V
RST
t
TOUT
TOUT
– has expired.
RST
311.
– on its positive edge, the
CC
311) will generate a
increases above the
8209D–AVR–11/10
BOT-
in
Figure