ATMEGA48PA-MNR Atmel, ATMEGA48PA-MNR Datasheet - Page 444

• Manufacturer Part Number: ATMEGA48PA-MNR
• Description: MCU AVR 4KB FLASH 20MHZ 28QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA48PA-MNR

• 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: 23
• Program Memory Size: 4KB (2K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 512 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: *
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Interface Type: SPI, UART, I2C
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• Operating Supply Voltage: 1.8 V to 5.5 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Operating Temperature Range: - 40 C to + 85 C
• Processor To Be Evaluated: ATMEGA48A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8161D–AVR–10/09
17 8-bit Timer/Counter2 with PWM and Asynchronous Operation ...... 144
18 SPI – Serial Peripheral Interface ......................................................... 166
19 USART0 ................................................................................................. 176
20 USART in SPI Mode ............................................................................. 204
17.1Features ..............................................................................................................144
17.2Overview .............................................................................................................144
17.3Timer/Counter Clock Sources .............................................................................145
17.4Counter Unit ........................................................................................................145
17.5Output Compare Unit ..........................................................................................146
17.6Compare Match Output Unit ................................................................................148
17.7Modes of Operation .............................................................................................149
17.8Timer/Counter Timing Diagrams .........................................................................153
17.9Asynchronous Operation of Timer/Counter2 .......................................................155
17.10Timer/Counter Prescaler ...................................................................................156
17.11Register Description ..........................................................................................158
18.1Features ..............................................................................................................166
18.2Overview .............................................................................................................166
18.3SS Pin Functionality ............................................................................................171
18.4Data Modes .........................................................................................................171
18.5Register Description ............................................................................................173
19.1Features ..............................................................................................................176
19.2Overview .............................................................................................................176
19.3Clock Generation .................................................................................................177
19.4Frame Formats ....................................................................................................180
19.5USART Initialization ............................................................................................182
19.6Data Transmission – The USART Transmitter ....................................................183
19.7Data Reception – The USART Receiver .............................................................186
19.8Asynchronous Data Reception ............................................................................190
19.9Multi-processor Communication Mode ................................................................193
19.10Register Description ..........................................................................................195
19.11Examples of Baud Rate Setting ........................................................................199
20.1Features ..............................................................................................................204
20.2Overview .............................................................................................................204
20.3Clock Generation .................................................................................................204
20.4SPI Data Modes and Timing ...............................................................................205
ATmega48PA/88PA/168PA/328P
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