ATMEGA3250-16AUR Atmel, ATMEGA3250-16AUR Datasheet - Page 358

• Manufacturer Part Number: ATMEGA3250-16AUR
• Description: MCU AVR 32K FLASH 16MHZ 100TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA3250-16AUR

• 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: 69
• Program Memory Size: 32KB (16K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 1K x 8
• Ram Size: 2K 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

2570M–AVR–04/11
18 SPI – Serial Peripheral Interface ......................................................... 148
19 USART0 ................................................................................................. 157
20 USI – Universal Serial Interface .......................................................... 185
21 Analog Comparator ............................................................................. 197
22 Analog to Digital Converter ................................................................ 201
17.8
17.9
17.10
17.11
18.1
18.2
18.3
18.4
18.5
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8
19.9
19.10
19.11
20.1
20.2
20.3
20.4
21.1
21.2
22.1
22.2
22.3
Timer/Counter Timing Diagrams ...................................................................139
Asynchronous Operation of Timer/Counter2 .................................................141
Timer/Counter Prescaler ...............................................................................142
Register Description ......................................................................................143
Features ........................................................................................................148
Overview ........................................................................................................148
SS Pin Functionality ......................................................................................152
Data Modes ...................................................................................................153
Register Description ......................................................................................154
Features ........................................................................................................157
Overview ........................................................................................................157
Clock Generation ...........................................................................................159
Frame Formats ..............................................................................................162
USART Initialization .......................................................................................163
Data Transmission – The USART Transmitter ..............................................165
Data Reception – The USART Receiver .......................................................167
Asynchronous Data Reception ......................................................................171
Multi-processor Communication Mode ..........................................................174
Examples of Baud Rate Setting .....................................................................176
Register Description ......................................................................................179
Overview ........................................................................................................185
Functional Descriptions .................................................................................186
Alternative USI Usage ...................................................................................192
Register Descriptions ....................................................................................192
Analog Comparator Multiplexed Input ...........................................................198
Register Description ......................................................................................198
Features ........................................................................................................201
Operation .......................................................................................................202
Starting a Conversion ....................................................................................203
ATmega325/3250/645/6450
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