ATMEGA8A-MUR Atmel, ATMEGA8A-MUR Datasheet - Page 98
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ATMEGA8A-MUR
Manufacturer Part Number
ATMEGA8A-MUR
Description
MCU AVR 8KB FLASH 16MHZ 32QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8A-MU.pdf
(308 pages)
Specifications of ATMEGA8A-MUR
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8159D–AVR–02/11
Figure 16-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 16-12
frequency correct PWM mode the OCR1x Register is updated at BOTTOM. The timing diagrams
will be the same, but TOP should be replaced by BOTTOM, TOP-1 by BOTTOM+1 and so on.
The same renaming applies for modes that set the TOV1 Flag at BOTTOM.
Figure 16-12. Timer/Counter Timing Diagram, no Prescaling
Figure 16-13
TCNTn
OCRnx
(PC and PFC PWM)
OCFnx
(clk
and ICFn
(CTC and FPWM)
clk
clk
(Update at TOP)
TOVn
I/O
I/O
Tn
TCNTn
TCNTn
OCRnx
as TOP)
(clk
/8)
clk
clk
I/O
(FPWM)
I/O
Tn
shows the count sequence close to TOP in various modes. When using phase and
shows the same timing data, but with the prescaler enabled.
/1)
(if used
OCRnx - 1
TOP - 1
TOP - 1
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
ATmega8A
BOTTOM + 1
OCRnx + 2
TOP - 2
clk_I/O
/8)
98
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