ATMEGA1284P-PU Atmel, ATMEGA1284P-PU Datasheet - Page 373

• 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
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Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 3
Resources ................................................................................................. 6
About Code Examples ............................................................................. 6
AVR CPU Core .......................................................................................... 7
AVR Memories ........................................................................................ 16
System Clock and Clock Options ......................................................... 27
2.1Block Diagram ...........................................................................................................3
2.2Pin Descriptions ........................................................................................................4
5.1Overview ...................................................................................................................7
5.2ALU – Arithmetic Logic Unit ......................................................................................8
5.3Status Register ..........................................................................................................8
5.4General Purpose Register File ................................................................................10
5.5Stack Pointer ...........................................................................................................11
5.6Instruction Execution Timing ...................................................................................12
5.7Reset and Interrupt Handling ..................................................................................13
6.1Overview .................................................................................................................16
6.2In-System Reprogrammable Flash Program Memory .............................................16
6.3SRAM Data Memory ...............................................................................................17
6.4EEPROM Data Memory ..........................................................................................19
6.5I/O Memory ..............................................................................................................20
6.6Register Description ................................................................................................21
7.1Clock Systems and their Distribution .......................................................................27
7.2Clock Sources .........................................................................................................28
7.3Low Power Crystal Oscillator ...................................................................................30
7.4Full Swing Crystal Oscillator ....................................................................................31
7.5Low Frequency Crystal Oscillator ............................................................................32
7.6Calibrated Internal RC Oscillator .............................................................................34
7.7128 kHz Internal Oscillator ......................................................................................35
7.8External Clock .........................................................................................................35
7.9Timer/Counter Oscillator .........................................................................................36
7.10Clock Output Buffer ...............................................................................................36
7.11System Clock Prescaler ........................................................................................36
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