ATMEGA168-20PU Atmel, ATMEGA168-20PU Datasheet - Page 357

• Manufacturer Part Number: ATMEGA168-20PU
• Description: IC AVR MCU 16K 20MHZ 28DIP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA168-20PU

• 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: 2-Wire, SPI, USART, Serial
• 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
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 6 Channel
• A/d Inputs: 6-Channel, 10-Bit
• Cpu Speed: 20 MIPS
• Eeprom Memory: 512 Bytes
• Input Output: 23
• Interface: I2C/SPI/UART/USART
• Memory Type: Flash
• Number Of Bits: 8
• Package Type: 28-pin PDIP
• Programmable Memory: 16K Bytes
• Timers: 2-8-bit, 1-16-bit
• Voltage, Range: 4.5-5.5 V
• Controller Family/series: AVR MEGA
• No. Of I/o's: 23
• Eeprom Memory Size: 512Byte
• Ram Memory Size: 1KB
• Rohs Compliant: Yes
• For Use With: ATSTK600-TQFP32 - STK600 SOCKET/ADAPTER 32-TQFPATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATAVRISP2 - PROGRAMMER AVR IN SYSTEMATJTAGICE2 - AVR ON-CHIP D-BUG SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2545E–AVR–02/05
23 Self-Programming the Flash, ATmega48 ........................................... 256
24 Boot Loader Support – Read-While-Write Self-Programming,
25 Memory Programming ......................................................................... 280
26 Electrical Characteristics .................................................................... 299
27 ATmega48/88/168 Typical Characteristics – Preliminary Data ........ 307
ATmega88 and ATmega168 264
22.6debugWIRE Related Register in I/O Memory ......................................................256
23.1Addressing the Flash During Self-Programming .................................................258
24.1Boot Loader Features ..........................................................................................264
24.2Application and Boot Loader Flash Sections .......................................................264
24.3Read-While-Write and No Read-While-Write Flash Sections ..............................265
24.4Boot Loader Lock Bits .........................................................................................267
24.5Entering the Boot Loader Program ......................................................................268
24.6Addressing the Flash During Self-Programming .................................................270
24.7Self-Programming the Flash ................................................................................271
25.1Program And Data Memory Lock Bits .................................................................280
25.2Fuse Bits .............................................................................................................281
25.3Signature Bytes ...................................................................................................283
25.4Calibration Byte ...................................................................................................284
25.5Page Size ............................................................................................................284
25.6Parallel Programming Parameters, Pin Mapping, and Commands .....................284
25.7Parallel Programming ..........................................................................................286
25.8Serial Downloading .............................................................................................295
25.9Serial Programming Pin Mapping ........................................................................296
26.1Absolute Maximum Ratings* ...............................................................................299
26.2DC Characteristics ..............................................................................................299
26.3External Clock Drive Waveforms .........................................................................301
26.4External Clock Drive ............................................................................................301
26.5Maximum Speed vs. V
26.62-wire Serial Interface Characteristics .................................................................302
26.7SPI Timing Characteristics ..................................................................................304
26.8ADC Characteristics – Preliminary Data ..............................................................306
27.1Active Supply Current ..........................................................................................307
27.2Idle Supply Current ..............................................................................................310
27.3Supply Current of I/O modules ............................................................................313
CC ............................................................................................................................. 301
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