ATMEGA168-20MI Atmel, ATMEGA168-20MI Datasheet - Page 366
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ATMEGA168-20MI
Manufacturer Part Number
ATMEGA168-20MI
Description
IC AVR MCU 16K 20MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA168-20MI
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 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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35.14 Rev. 2545F-05/05
35.15 Rev. 2545E-02/05
35.16 Rev. 2545D-07/04
366
ATmega48/88/168
1.
2.
3.
4.
5.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Table notes in
Updated instructions used with WDTCSR in relevant code examples.
Updated cross-reference in
Added
Update
Updated
Updated
MLF-package alternative changed to “Quad Flat No-Lead/Micro Lead Frame Package
QFN/MLF”.
Updated
Updated
Updated
Updated
305and
Added
Updated
Updated
266.
Updated
Updated
Updated
Updated
Updated
and
Updated
Moved “TIMSK2 – Timer/Counter2 Interrupt Mask Register” on page17.11.6 and
“TIFR2 – Timer/Counter2 Interrupt Flag Register” on page17.11.7 to
“Register Description” on page
Updated equation in
Added
Updated
Updated Ordering Information for
Updated
Updated equation in
Table 26-11 on page
Section 3. “Resources” on page 7
“Pin Change Interrupt Timing” on page 65
“Page Size” on page
Section 8.6 “Calibrated Internal RC Oscillator” on page
Table 27-16 on page 299
Section 27.8.3 “Serial Programming Instruction set” on page
Section 34. “Errata” on page
“EECR – The EEPROM Control Register” on page
“Calibrated Internal RC Oscillator” on page
“External Clock” 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 359
“System Clock Prescaler” on page
“Serial Programming Algorithm” on page
“Errata ATmega88” on page 359
“SPMCSR – Store Program Memory Control and Status Register” on page
Table 8-5 on page
Table 28-3 on page
Section 28.2 “DC Characteristics” on page 302
“Bit Rate Generator Unit” on page
“Bit Rate Generator Unit” on page
282.
“Electrical Interconnection” on page
288.
30,
306,
152.
Table 28-4 on page
“ATmega168” on page
34.
Table 28-6 on page
356.
302.
349.
and
and
35.
290.
“Errata ATmega168” on page
“Errata ATmega168” on page
298.
32.
306,
89.
215.
215.
351.
308,
Table 26-9 on page
21.
updated.
32.
Table 28-2 on page
209.
299.
2545S–AVR–07/10
360.
360.
281,
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