ATMEGA128A-ANR Atmel, ATMEGA128A-ANR Datasheet - Page 133
ATMEGA128A-ANR
Manufacturer Part Number
ATMEGA128A-ANR
Description
IC MCU AVR 128K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128A-ANR
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K 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
64-TQFP
Core
AVR8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Manufacturer
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Price
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8151H–AVR–02/11
Figure 15-11. Timer/Counter Timing Diagram, Setting of OCFnx, with Prescaler (f
Figure 15-12
frequency correct PWM mode the OCRnx 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 TOVn flag at BOTTOM.
Figure 15-12. Timer/Counter Timing Diagram, no Prescaling
Figure 15-13
(PC and PFC PWM)
and ICFn
TCNTn
OCRnx
OCFnx
(clk
(CTC and FPWM)
(Update at TOP)
TOVn
clk
clk
I/O
TCNTn
TCNTn
OCRnx
I/O
as TOP)
Tn
(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
ATmega128A
OCRnx + 2
BOTTOM + 1
clk_I/O
TOP - 2
/8)
133
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