ATmega88 Automotive Atmel Corporation, ATmega88 Automotive Datasheet - Page 45

• Manufacturer Part Number: ATmega88 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATmega88 Automotive

• Flash (kbytes): 8 Kbytes
• Pin Count: 32
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 12
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 23
• Ext Interrupts: 24
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 1
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

8.0.6
7530I–AVR–02/10
Watchdog System Reset
Table 8-3.
When the BOD is enabled, and V
8-5), the Brown-out Reset is immediately activated. When V
(V
expired.
The BOD circuit will only detect a drop in V
ger than t
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 47
Figure 8-6.
Symbol
V
t
BOD
BOT+
HYST
in
for details on operation of the Watchdog Timer.
BOD
Figure
CC
given in
Brown-out Characteristics
Parameter
Brown-out Detector Hysteresis
Min Pulse Width on Brown-out Reset
Brown-out Reset During Operation
Watchdog System Reset During Operation
INTERNAL
TIME-OUT
8-5), the delay counter starts the MCU after the Time-out period t
RESET
RESET
V
CC
Table 8-1 on page
CC
decreases to a value below the trigger level (V
ATmega48/88/168 Automotive
V
CK
BOT-
43.
CC
if the voltage stays below the trigger level for lon-
CC
V
t
TOUT
Min
BOT+
increases above the trigger level
Typ
50
Max
TOUT
BOT-
. Refer to
TOUT
in
Units
mV
Figure
ns
has
45