ATMEGA168P-20PU Atmel, ATMEGA168P-20PU Datasheet - Page 417

• Manufacturer Part Number: ATMEGA168P-20PU
• Description: MCU AVR 16K FLASH 20MHZ 28-PDIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA168P-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: 16KB (8K 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)
• Processor Series: ATMEGA16x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1 KB
• Interface Type: I2C, SPI, USART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 23
• 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
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 6 Channel
• Controller Family/series: AVR MEGA
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Cpu Speed: 20MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• Data Rom Size: 512 B
• A/d Bit Size: 10 bit
• A/d Channels Available: 6
• Height: 4.57 mm
• Length: 34.8 mm
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Width: 7.49 mm
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8025L–AVR–7/10
21 2-wire Serial Interface .......................................................................... 212
22 Analog Comparator ............................................................................. 244
23 Analog-to-Digital Converter ................................................................ 248
24 debugWIRE On-chip Debug System .................................................. 265
25 Self-Programming the Flash, ATmega48P ........................................ 267
20.8Register Description ............................................................................................209
21.1Features ..............................................................................................................212
21.22-wire Serial Interface Bus Definition ..................................................................212
21.3Data Transfer and Frame Format ........................................................................214
21.4Multi-master Bus Systems, Arbitration and Synchronization ...............................216
21.5Overview of the TWI Module ...............................................................................219
21.6Using the TWI ......................................................................................................221
21.7Transmission Modes ...........................................................................................225
21.8Multi-master Systems and Arbitration ..................................................................238
21.9Register Description ............................................................................................239
22.1Overview .............................................................................................................244
22.2Analog Comparator Multiplexed Input .................................................................244
22.3Register Description ............................................................................................245
23.1Features ..............................................................................................................248
23.2Overview .............................................................................................................248
23.3Starting a Conversion ..........................................................................................250
23.4Prescaling and Conversion Timing ......................................................................251
23.5Changing Channel or Reference Selection .........................................................253
23.6ADC Noise Canceler ...........................................................................................254
23.7ADC Conversion Result ......................................................................................259
23.8Temperature Measurement .................................................................................259
23.9Register Description ............................................................................................260
24.1Features ..............................................................................................................265
24.2Overview .............................................................................................................265
24.3Physical Interface ................................................................................................265
24.4Software Break Points .........................................................................................266
24.5Limitations of debugWIRE ...................................................................................266
24.6Register Description ............................................................................................266
25.1Overview .............................................................................................................267
ATmega48P/88P/168P
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