ATMEGA162V-8AJ Atmel, ATMEGA162V-8AJ Datasheet - Page 51
ATMEGA162V-8AJ
Manufacturer Part Number
ATMEGA162V-8AJ
Description
IC MCU AVR 16K 5V 8MHZ 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA162V-8AJ
Core Processor
AVR
Core Size
8-Bit
Speed
8MHz
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)
1.8 V ~ 5.5 V
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Data Converters
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Watchdog Reset
MCU Control and
Status Register –
MCUCSR
2513K–AVR–07/09
Figure 25. 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
page 52
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.
Bit
Read/Write
Initial Value
INTERNAL
TIME-OUT
for details on operation of the Watchdog Timer.
RESET
RESET
CC
V
CC
R/W
JTD
7
0
R/W
6
–
0
SM2
R
5
0
V
BOT-
JTRF
CK
R/W
4
WDRF
R/W
3
See Bit Description
BORF
R/W
2
EXTRF
R/W
V
t
1
TOUT
BOT+
ATmega162/V
PORF
R/W
0
MCUCSR
TOUT
. Refer to
51
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