ATMEGA8-16AUR Atmel, ATMEGA8-16AUR Datasheet - Page 25
![IC MCU AVR 8K 16MHZ 5V 32TQFP](/photos/6/91/69154/313-32-tqfp_sml.jpg)
ATMEGA8-16AUR
Manufacturer Part Number
ATMEGA8-16AUR
Description
IC MCU AVR 8K 16MHZ 5V 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8-16AUR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K 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
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-TQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA8-16AUR
Manufacturer:
AVX
Quantity:
4 000
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System Clock
and Clock
Options
Clock Systems
and their
Distribution
CPU Clock – clk
I/O Clock – clk
Flash Clock – clk
2486Z–AVR–02/11
I/O
CPU
FLASH
Figure 10
the clocks need not be active at a given time. In order to reduce power consumption, the clocks
to modules not being used can be halted by using different sleep modes, as described in
Management and Sleep Modes” on page
Figure 10. Clock Distribution
The CPU clock is routed to parts of the system concerned with operation of the AVR core.
Examples of such modules are the General Purpose Register File, the Status Register and the
Data memory holding the Stack Pointer. Halting the CPU clock inhibits the core from performing
general operations and calculations.
The I/O clock is used by the majority of the I/O modules, like Timer/Counters, SPI, and USART.
The I/O clock is also used by the External Interrupt module, but note that some external inter-
rupts are detected by asynchronous logic, allowing such interrupts to be detected even if the I/O
clock is halted. Also note that address recognition in the TWI module is carried out asynchro-
nously when clk
The Flash clock controls operation of the Flash interface. The Flash clock is usually active simul-
taneously with the CPU clock.
Timer/Counter
Timer/Counter
Asynchronous
Oscillator
presents the principal clock systems in the Atmel
I/O
is halted, enabling TWI address reception in all sleep modes.
General I/O
External RC
Modules
Oscillator
clk
clk
ASY
I/O
External Clock
Control Unit
AVR Clock
Multiplexer
Clock
ADC
33. The clock systems are detailed
clk
Source Clock
ADC
CPU Core
Reset Logic
clk
Oscillator
clk
Crystal
CPU
FLASH
®
Watchdog Clock
AVR
Crystal Oscillator
Low-Frequency
®
Watchdog Timer
and their distribution. All of
Watchdog
Oscillator
RAM
ATmega8(L)
Figure
Calibrated RC
Flash and
EEPROM
Oscillator
10.
“Power
25
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