ATmega8HVA Atmel Corporation, ATmega8HVA Datasheet - Page 45

• Manufacturer Part Number: ATmega8HVA
• Manufacturer: Atmel Corporation

Specifications of ATmega8HVA

• Flash (kbytes): 8 Kbytes
• Pin Count: 28
• Max. Operating Frequency: 4 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 3
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 6
• Adc Resolution (bits): 12
• Adc Speed (ksps): 1.9
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 256
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -20 to 85
• I/o Supply Class: 1.8 to 9.0
• Operating Voltage (vcc): 1.8 to 9.0
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 4
• Input Capture Channels: 2
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

11.2.5
8024A–AVR–04/08
Black-out Detection
The BOD is automatically enabled in all modes of operation, except in Power-off mode.
When the BOD is enabled, and V
ure
level (V
expired.
Figure 11-5. Brown-out Reset During Operation
As an extra security feature, the chip will automatically enter Power-off if V
V
BLOT
11-5), the Brown-out Reset is immediately activated. When V
. V
BOT+
INTERNAL
TIME-OUT
BLOT
RESET
RESET
in
will always be well below the BOD level, V
V
Figure
CC
11-5), the delay counter starts the MCU after the Time-out period t
REG
V
BOT-
decreases to a value below the trigger level (V
ATmega8HVA/16HVA
BOT
.
V
REG
t
TOUT
BOT+
increases above the trigger
REG
drops below
BOT-
TOUT
in
Fig-
has
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