ATMEGA1284P-PU Atmel, ATMEGA1284P-PU Datasheet - Page 376

• Manufacturer Part Number: ATMEGA1284P-PU
• Description: MCU AVR 128K ISP FLASH 40-PDIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA1284P-PU

• 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: 128KB (64K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 4K x 8
• Ram Size: 16K 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: 40-DIP (0.600", 15.24mm)
• Processor Series: ATMEGA128x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 16 KB
• Interface Type: 2-Wire/SPI/USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRRAVEN, ATAVRRZUSBSTICK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 8-ch x 10-bit
• Controller Family/series: AVR MEGA
• No. Of I/o's: 32
• Eeprom Memory Size: 4KB
• Ram Memory Size: 16KB
• Cpu Speed: 20MHz
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP44 - STK600 SOCKET/ADAPTER 44-TQFPATSTK600 - DEV KIT FOR AVR/AVR32
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8059D–AVR–11/09
17 USART ................................................................................................... 171
18 USART in SPI Mode ............................................................................. 198
19 2-wire Serial Interface .......................................................................... 207
20 AC - Analog Comparator ..................................................................... 237
16.4Data Modes .........................................................................................................166
16.5Register Description ............................................................................................168
17.1Features ..............................................................................................................171
17.2USART1 and USART0 ........................................................................................171
17.3Overview .............................................................................................................171
17.4Clock Generation .................................................................................................172
17.5Frame Formats ....................................................................................................175
17.6USART Initialization ............................................................................................176
17.7Data Transmission – The USART Transmitter ....................................................177
17.8Data Reception – The USART Receiver .............................................................180
17.9Asynchronous Data Reception ............................................................................184
17.10Multi-processor Communication Mode ..............................................................187
17.11Register Description ..........................................................................................189
17.12Examples of Baud Rate Setting ........................................................................194
18.1Features ..............................................................................................................198
18.2Overview .............................................................................................................198
18.3Clock Generation .................................................................................................198
18.4SPI Data Modes and Timing ...............................................................................199
18.5Frame Formats ....................................................................................................199
18.6Data Transfer ......................................................................................................201
18.7AVR USART MSPIM vs. AVR SPI ......................................................................203
18.8Register Description ............................................................................................204
19.1Features ..............................................................................................................207
19.22-wire Serial Interface Bus Definition ..................................................................207
19.3Data Transfer and Frame Format ........................................................................208
19.4Multi-master Bus Systems, Arbitration and Synchronization ...............................211
19.5Overview of the TWI Module ...............................................................................213
19.6Using the TWI ......................................................................................................215
19.7Transmission Modes ...........................................................................................218
19.8Multi-master Systems and Arbitration ..................................................................231
19.9Register Description ............................................................................................232
ATmega1284P
iv