ATMEGA644V-10MU Atmel, ATMEGA644V-10MU Datasheet - Page 371

• Manufacturer Part Number: ATMEGA644V-10MU
• Description: IC AVR MCU FLASH 64K 44-QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA644V-10MU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 10MHz
• 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-VQFN Exposed Pad
• Package: 44QFN EP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 10 MHz
• Operating Supply Voltage: 2.5|3.3|5 V
• Data Bus Width: 8 Bit
• Number Of Programmable I/os: 32
• Interface Type: JTAG/SPI/TWI/USART
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Processor Series: ATMEGA64x
• Core: AVR8
• Data Ram Size: 4 KB
• Maximum Clock Frequency: 20 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2593N–AVR–07/10
15 8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 134
16 SPI – Serial Peripheral Interface ......................................................... 155
17 USART ................................................................................................... 164
18 USART in SPI Mode ............................................................................. 191
14.3Timer/Counter Clock Sources .............................................................................111
14.4Counter Unit ........................................................................................................112
14.5Input Capture Unit ...............................................................................................113
14.6Output Compare Units .........................................................................................115
14.7Compare Match Output Unit ................................................................................117
14.8Modes of Operation .............................................................................................118
14.9Timer/Counter Timing Diagrams .........................................................................125
14.1016-bit Timer/Counter Register Description ........................................................127
15.1Overview .............................................................................................................134
15.2Timer/Counter Clock Sources .............................................................................135
15.3Counter Unit ........................................................................................................135
15.4Output Compare Unit ..........................................................................................136
15.5Compare Match Output Unit ................................................................................138
15.6Modes of Operation .............................................................................................139
15.7Timer/Counter Timing Diagrams .........................................................................143
15.88-bit Timer/Counter Register Description ............................................................145
15.9Asynchronous operation of the Timer/Counter ....................................................150
15.10Timer/Counter Prescaler ...................................................................................154
16.1SS Pin Functionality ............................................................................................160
16.2Data Modes .........................................................................................................162
17.1USART0 ..............................................................................................................164
17.2Overview .............................................................................................................164
17.3Clock Generation .................................................................................................165
17.4Frame Formats ....................................................................................................168
17.5USART Initialization ............................................................................................169
17.6Data Transmission – The USART Transmitter ....................................................170
17.7Data Reception – The USART Receiver .............................................................173
17.8Asynchronous Data Reception ............................................................................177
17.9Multi-processor Communication Mode ................................................................180
17.10USART Register Description .............................................................................181
17.11Examples of Baud Rate Setting ........................................................................187
ATmega644
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