ATMEGA162-16MC Atmel, ATMEGA162-16MC Datasheet - Page 49

• Manufacturer Part Number: ATMEGA162-16MC
• Description: IC MCU AVR 16K 5V 16MHZ 44-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA162-16MC

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: EBI/EMI, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 35
• 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): 4.5 V ~ 5.5 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 44-VQFN Exposed Pad
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Watchdog Reset
MCU Control and Status
Register – MCUCSR
2513C–AVR–09/02
Figure 25. Brown-out Reset During Operation
When the Watchdog times out, it will generate a short reset pulse of one CK cycle dura-
tion. On the falling edge of this pulse, the delay timer starts counting the Time-out period
t
Figure 26. Watchdog Reset During Operation
The MCU Control and Status Register provides information on which reset source
caused an MCU Reset.
• Bit 4 – JTRF: JTAG Reset Flag
This bit is set if a reset is being caused by a logic one in the JTAG Reset Register
selected by the JTAG instruction AVR_RESET. This bit is reset by a Power-on Reset, or
by writing a logic zero to the flag.
• Bit 3 – WDRF: Watchdog Reset Flag
This bit is set if a Watchdog Reset occurs. The bit is reset by a Power-on Reset, or by
writing a logic zero to the flag.
TOUT
Bit
Read/Write
Initial Value
INTERNAL
TIME-OUT
. Refer to page 50 for details on operation of the Watchdog Timer.
RESET
RESET
CC
V
CC
JTD
R/W
7
0
R/W
6
–
0
SM2
V
R
5
0
BOT-
CK
JTRF
R/W
4
WDRF
R/W
3
See Bit Description
ATmega162(V/U/L)
BORF
R/W
2
V
t
TOUT
BOT+
EXTRF
R/W
1
PORF
R/W
0
MCUCSR
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