ATMEGA329PV-10MN Atmel, ATMEGA329PV-10MN Datasheet - Page 51
ATMEGA329PV-10MN
Manufacturer Part Number
ATMEGA329PV-10MN
Description
IC MCU AVR 32K 10MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA329PV-10MN
Core Processor
AVR
Core Size
8-Bit
Speed
10MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, LCD, POR, PWM, WDT
Number Of I /o
54
Program Memory Size
32KB (16K x 16)
Program Memory Type
FLASH
Eeprom Size
1K x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8021G–AVR–03/11
• Bit 3 – WDE: Watchdog Enable
When the WDE is written to logic one, the Watchdog Timer is enabled, and if the WDE is written
to logic zero, the Watchdog Timer function is disabled. WDE can only be cleared if the WDCE bit
has logic level one. To disable an enabled Watchdog Timer, the following procedure must be
followed:
1. In the same operation, write a logic one to WDCE and WDE. A logic one must be written
2. Within the next four clock cycles, write a logic 0 to WDE. This disables the Watchdog.
In safety level 2, it is not possible to disable the Watchdog Timer, even with the algorithm
described above.
page
• Bits 2:0 – WDP2, WDP1, WDP0: Watchdog Timer Prescaler 2, 1, and 0
The WDP2, WDP1, and WDP0 bits determine the Watchdog Timer prescaling when the Watch-
dog Timer is enabled. The different prescaling values and their corresponding Time-out Periods
are shown in
Table 10-2.
WDP2
to WDE even though it is set to one before the disable operation starts.
0
0
0
0
1
1
1
1
49.
WDP1
Table 10-2 on page
0
0
1
1
0
0
1
1
Watchdog Timer Prescale Select
”Timed Sequences for Changing the Configuration of the Watchdog Timer” on
WDP0
0
1
0
1
0
1
0
1
Oscillator Cycles
Number of WDT
51.
1,024K cycles
2,048K cycles
128K cycles
256K cycles
512K cycles
16K cycles
32K cycles
64K cycles
Typical Time-out at
ATmega329P/3290P
V
CC
17.1ms
34.3ms
68.5ms
0.14s
0.27s
0.55s
1.1s
2.2s
= 3.0V
Typical Time-out at
V
CC
16.3ms
32.5ms
65ms
0.13s
0.26s
0.52
1.0s
2.1s
= 5.0V
51
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