ATMEGA88-20PU Atmel, ATMEGA88-20PU Datasheet - Page 373

• Manufacturer Part Number: ATMEGA88-20PU
• Description: IC AVR MCU 8K 20MHZ 5V 28DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA88-20PU

• 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: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 6x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 28-DIP (0.300", 7.62mm)
• Cpu Family: ATmega
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: SPI/TWI/USART
• Total Internal Ram Size: 1KB
• # I/os (max): 23
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 6-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 28
• Package Type: PDIP
• Processor Series: ATMEGA8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• Number Of Timers: 3
• Operating Supply Voltage: 2.7 V to 5.5 V
• 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, ATAVRTS2080A, ATASTK512-EK1-IND
• Minimum Operating Temperature: - 40 C
• Package: 28PDIP
• Family Name: ATmega
• Maximum Speed: 20 MHz
• For Use With: ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

22 Analog Comparator .............................................................................. 240
23 Analog-to-Digital Converter ................................................................ 243
24 debugWIRE On-chip Debug System .................................................. 259
25 Self-Programming the Flash, ATmega48 ........................................... 261
26 Boot Loader Support – Read-While-Write Self-Programming, ATmega88 and ATmega168
2545S–AVR–07/10
268
21.22-wire Serial Interface Bus Definition ..................................................................208
21.3Data Transfer and Frame Format ........................................................................209
21.4Multi-master Bus Systems, Arbitration and Synchronization ...............................212
21.5Overview of the TWI Module ...............................................................................215
21.6Using the TWI ......................................................................................................217
21.7Transmission Modes ...........................................................................................221
21.8Multi-master Systems and Arbitration ..................................................................234
21.9Register Description ............................................................................................235
22.1Overview ..............................................................................................................240
22.2Analog Comparator Multiplexed Input .................................................................240
22.3Register Description ............................................................................................241
23.1Features ..............................................................................................................243
23.2Overview ..............................................................................................................243
23.3Starting a Conversion ..........................................................................................245
23.4Prescaling and Conversion Timing ......................................................................246
23.5Changing Channel or Reference Selection .........................................................248
23.6ADC Noise Canceler ...........................................................................................249
23.7ADC Conversion Result .......................................................................................254
23.8Register Description ............................................................................................254
24.1Features ..............................................................................................................259
24.2Overview ..............................................................................................................259
24.3Physical Interface ................................................................................................259
24.4Software Break Points .........................................................................................260
24.5Limitations of debugWIRE ...................................................................................260
24.6Register Description ............................................................................................260
25.1Overview ..............................................................................................................261
25.2Addressing the Flash During Self-Programming .................................................262
25.3Register Description ............................................................................................266
26.1Features ..............................................................................................................268
ATmega48/88/168
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