ATMEGA168-20PU Atmel, ATMEGA168-20PU Datasheet - Page 350

• 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

33. Datasheet Revision History
33.1
33.2
33.3
350
Rev. 2545E-02/05
Rev. 2545D-07/04
Rev. 2545C-04/04
ATmega48/88/168
Please note that the referring page numbers in this section are referred to this document. The
referring revision in this section are referring to the document revision.
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1.
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11.
1.
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4.
Updated instructions used with WDTCSR in relevant code examples.
Updated
Updated cross-reference in
Updated equation in
Updated equation in
Updated
Updated
Updated
MLF-package alternative changed to “
QFN/MLF”.
Updated
Updated
Updated
Updated
Table 25-16 on page 297
Added
Updated
Updated
259.
Updated
Updated
Updated
Updated
Updated
Table 24-11 on page
Moved “Timer/Counter2 Interrupt Mask Register – TIMSK2” and
“Timer/Counter2 Interrupt Flag Register – TIFR2” to
”8-bit Timer/Counter Register Description” on page
Added
Updated
Updated Ordering Information for
Updated
Speed Grades changed: 12MHz to 10MHz and 24MHz to 20MHz
”Pin Change Interrupt Timing” on page 83
”Page Size” on page
”The EEPROM Control Register – EECR” on page
”Calibrated Internal RC Oscillator” on page
”External Clock” on page
Table 8-1 on page
”8-bit Timer/Counter Block Diagram” on page
”Enter Programming Mode” on page
”DC Characteristics” on page
”Ordering Information” on page
”Errata ATmega88” on page 348
”System Clock Prescaler” on page
”Serial Programming Algorithm” on page
”Errata ATmega88” on page 348
”Maximum Speed vs. VCC” on page
”Ordering Information” on page
”Errata ATmega88” on page
”Store Program Memory Control and Status Register – SPMCSR” on page
Table 6-5 on page
”Bit Rate Generator Unit” on page
”Bit Rate Generator Unit” on page
279.
”Electrical Interconnection” on page
44,
29,
284.
Table 26-3 on page
Table 8-2 on page
”ATmega168” on page
33.
348.
299.
Quad Flat No-Lead/Micro Lead Frame Package
341.
341.
and
and
34.
286.
301.
”Errata ATmega168” on page
”Errata ATmega168” on page
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149.
46,
304,
31.
88.
211.
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Table 24-9 on page
343.
Table 26-1 on page
19.
206.
2545E–AVR–02/05
278, and
349.
349.
301and