ATMEGA644PV-20AU Atmel, ATMEGA644PV-20AU Datasheet - Page 433
![IC MCU AVR 64K FLASH 44-TQFP](/photos/6/70/67042/313-44-tqfp_sml.jpg)
ATMEGA644PV-20AU
Manufacturer Part Number
ATMEGA644PV-20AU
Description
IC MCU AVR 64K FLASH 44-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA644PV-20AU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
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
44-TQFP, 44-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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8011O–AVR–07/10
10 External Interrupts ................................................................................. 67
11 I/O-Ports .................................................................................................. 72
12 8-bit Timer/Counter0 with PWM ............................................................ 93
13 16-bit Timer/Counter1 with PWM ........................................................ 111
14 8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 139
10.1 Overview ..............................................................................................................67
10.2 Register Description .............................................................................................67
11.1 Overview ..............................................................................................................72
11.2 Ports as General Digital I/O ..................................................................................73
11.3 Alternate Port Functions .......................................................................................78
11.4 Register Description .............................................................................................91
12.1 Features ...............................................................................................................93
12.2 Overview ..............................................................................................................93
12.3 Timer/Counter Clock Sources ..............................................................................94
12.4 Counter Unit .........................................................................................................94
12.5 Output Compare Unit ...........................................................................................95
12.6 Compare Match Output Unit .................................................................................97
12.7 Modes of Operation ..............................................................................................98
12.8 Timer/Counter Timing Diagrams ........................................................................102
12.9 Register Description ...........................................................................................104
13.1 Features .............................................................................................................111
13.2 Overview ............................................................................................................111
13.3 Accessing 16-bit Registers .................................................................................113
13.4 Timer/Counter Clock Sources ............................................................................116
13.5 Counter Unit .......................................................................................................117
13.6 Input Capture Unit ..............................................................................................118
13.7 Output Compare Units ........................................................................................120
13.8 Compare Match Output Unit ...............................................................................122
13.9 Modes of Operation ............................................................................................123
13.10 Timer/Counter Timing Diagrams ......................................................................130
13.11 Register Description .........................................................................................132
14.1 Features .............................................................................................................139
14.2 Overview ............................................................................................................139
14.3 Timer/Counter Clock Sources ............................................................................140
14.4 Counter Unit .......................................................................................................141
ATmega164P/324P/644P
iii
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