ATMEGA645A-AU Atmel, ATMEGA645A-AU Datasheet - Page 131
![IC MCU AVR 64K FLASH 64TQFP](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA645A-AU
Manufacturer Part Number
ATMEGA645A-AU
Description
IC MCU AVR 64K FLASH 64TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA645A-AU
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
SPI, UART/USART, USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
54
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)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP
Processor Series
ATmega
Core
AVR
Data Bus Width
8 bit
Data Ram Size
4 KB
Interface Type
SPI, USART
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
54
Number Of Timers
3
Operating Supply Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Operating Temperature Range
- 40 C to + 85 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA645A-AUR
Manufacturer:
HONEYWELL
Quantity:
101
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8285B–AVR–03/11
ATmega165A/165PA/325A/325PA/3250A/3250PA/6
Table 15-4
correct or the phase and frequency correct, PWM mode.
Table 15-4.
Note:
• Bit 1:0 – WGM1[1:0]: Waveform Generation Mode
Combined with the WGM1[3:2] bits found in the TCCR1B Register, these bits control the count-
ing sequence of the counter, the source for maximum (TOP) counter value, and what type of
waveform 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.
121.).
COM1A1/COM1B1
1. A special case occurs when OCR1A/OCR1B equals TOP and COM1A1/COM1B1 is set.
0
0
1
1
shows the COM1x[1:0] bit functionality when the WGM1[3:0] bits are set to the phase
”Phase Correct PWM Mode” on page 124.
Compare Output Mode, Phase Correct and Phase and Frequency Correct
PWM
(1)
COM1A0/COM1B0
0
1
0
1
Table
Description
Normal port operation, OC1A/OC1B disconnected.
WGM1[3:0] = 9 or 11: Toggle OC1A on Compare
Match, OC1B disconnected (normal port operation).
For all other WGM1 settings, normal port operation,
OC1A/OC1B disconnected.
Clear OC1A/OC1B on Compare Match when up-
counting. Set OC1A/OC1B on Compare Match when
down counting.
Set OC1A/OC1B on Compare Match when up-
counting. Clear OC1A/OC1B on Compare Match
when down counting.
15-5. Modes of operation supported by the
for more details.
(See ”Modes of Operation” on page
See
131
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