ATMEGA644P-A15MZ Atmel, ATMEGA644P-A15MZ Datasheet - Page 133

• Manufacturer Part Number: ATMEGA644P-A15MZ
• Description: MCU AVR 64KB FLASH 16MHZ 44QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644P-A15MZ

• Package / Case: 44-VQFN Exposed Pad
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Speed: 16MHz
• Number Of I /o: 32
• Eeprom Size: 2K x 8
• Core Processor: AVR
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Program Memory Size: 64KB (64K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Connectivity: I²C, SPI, UART/USART
• Core Size: 8-Bit
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7674F–AVR–09/09
Table 14-4 on page 133
the phase correct or the phase and frequency correct, PWM mode.
Table 14-4.
Note:
• Bit 1:0 – WGMn1:0: Waveform Generation Mode
Combined with the WGMn3:2 bits found in the TCCRnB Register, these bits control the counting
sequence of the counter, the source for maximum (TOP) counter value, and what type of wave-
form generation to be used, see
Timer/Counter unit are: Normal mode (counter), Clear Timer on Compare match (CTC) mode,
and three types of Pulse Width Modulation (PWM) modes.
122.).
COMnA1/COMnB1
1. A special case occurs when OCRnA/OCRnB equals TOP and COMnA1/COMnB1 is set.
0
0
1
1
“Phase Correct PWM Mode” on page 125.
Compare Output Mode, Phase Correct and Phase and Frequency Correct
PWM
(1)
shows the COMnx1:0 bit functionality when the WGMn3:0 bits are set to
COMnA0/COMnB0
0
1
0
1
Table 14-5 on page
Description
Normal port operation, OCnA/OCnB disconnected.
WGMn3:0 = 9 or 11: Toggle OCnA on Compare
Match, OCnB disconnected (normal port operation).
For all other WGM1 settings, normal port operation,
OC1A/OC1B disconnected.
Clear OCnA/OCnB on Compare Match when
up-counting. Set OCnA/OCnB on Compare Match
when downcounting.
Set OCnA/OCnB on Compare Match when
up-counting. Clear OCnA/OCnB on Compare Match
when downcounting.
ATmega164P/324P/644P
for more details.
134. Modes of operation supported by the
(See “Modes of Operation” on page
See
133