ATMEGA329PV-10MN Atmel, ATMEGA329PV-10MN Datasheet - Page 34
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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8.10.1
8021G–AVR–03/11
Switching Time
When switching between prescaler settings, the System Clock Prescaler ensures that no
glitches occur in the clock system and that no intermediate frequency is higher than neither the
clock frequency corresponding to the previous setting, nor the clock frequency corresponding to
the new setting.
The ripple counter that implements the prescaler runs at the frequency of the undivided clock,
which may be faster than the CPU’s clock frequency. Hence, it is not possible to determine the
state of the prescaler – even if it were readable, and the exact time it takes to switch from one
clock division to another cannot be exactly predicted.
From the time the CLKPS values are written, it takes between T1 + T2 and T1 + 2*T2 before the
new clock frequency is active. In this interval, 2 active clock edges are produced. Here, T1 is the
previous clock period, and T2 is the period corresponding to the new prescaler setting.
ATmega329P/3290P
34
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