ATMEGA64A-ANR Atmel, ATMEGA64A-ANR Datasheet - Page 131

• Manufacturer Part Number: ATMEGA64A-ANR
• Description: IC MCU AVR 64K FLASH 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA64A-ANR

• 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: 53
• Program Memory Size: 64KB (32K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 2K 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: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8160C–AVR–07/09
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
TCNTn
OCRnx
OCFnx
(PC and PFC PWM)
(clk
and ICFn
(CTC and FPWM)
clk
clk
(Update at TOP)
TOVn
I/O
I/O
Tn
TCNTn
TCNTn
OCRnx
(clk
as TOP)
/8)
clk
clk
I/O
(FPWM)
I/O
Tn
shows the count sequence close to TOP in various modes. When using phase and
/1)
shows the same timing data, but with the prescaler enabled.
(if used
OCRnx - 1
TOP - 1
TOP - 1
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
ATmega64A
OCRnx + 2
BOTTOM + 1
clk_I/O
TOP - 2
/8)
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