ATMEGA168-20MI Atmel, ATMEGA168-20MI Datasheet - Page 31
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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
9.13
9.14
2545SS–AVR–07/10
Rev. 2545G-06/06
Rev. 2545F-05/05
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17
18.
19.
20.
1.
2.
Added Addresses in Registers.
Updated
Updated
Updated
Updated
Updated
Updated Features in
Updated rev. A in
Added rev. C and D in
Updated
Updated
Updated bit description in
132.
Updated code example in
Updated
Table 15-2 on page
3 on page
page
Added Note to
page
Updated
Updated
Updated
Updated
Updated
13-3 on page
Updated note for
Updatad
Updated
Updated
Updated note in
Updated
Updated
Updated
Added
Updated
Added
Update
286.
299.
Table 28-1 on page
Section 3. “Resources” on page 7
Section 8.6 “Calibrated Internal RC Oscillator” on page
“Brown-out Detection” on page
“Fast PWM Mode” on page
Table 14-3 on page
“Setting the Boot Loader Lock Bits by SPM” on page
“Signature Bytes” on page 287
“Electrical Characteristics” on page
“Errata” on page
“Calibrated Internal RC Oscillator” on page
Table 8-12 on page
“ADC Noise Reduction Mode” on page
“Bit 2 - PRSPI: Power Reduction Serial Peripheral Interface” on page
“TCCR0B – Timer/Counter Control Register B” on page
“Fast PWM Mode” on page
“Asynchronous Operation of Timer/Counter2” on page
“SPI – Serial Peripheral Interface” on page
“UCSRnA – USART MSPIM Control and Status Register n A” on page
“Bit 6 – ACBG: Analog Comparator Bandgap Select” on page
“Prescaling and Conversion Timing” on page
“Limitations of debugWIRE” on page
Figure 15-7 on page
153,
77.
Table 25-1 on page
Table 17-6 on page
“Bit Rate Generator Unit” on page
Table 9-2 on page
“Errata ATmega48” on page
129,
“Analog-to-Digital Converter” on page
“Errata ATmega48” on page
Table 15-3 on page
“SPI – Serial Peripheral Interface” on page
357.
“TCCR1C – Timer/Counter1 Control Register C” on page
305.
34,
100,
121,
Table 9-1 on page
Table 14-6 on page
264,
Figure 29-45 on page
154,
42.
120.
120.
Table 26-5 on page
46.
Table 17-8 on page
302.
130,
260.
357.
39.
Table 15-4 on page
215.
38,
357.
ATmega48/88/168
160.
32.
246.
101,
Table 10-1 on page
338.
243.
Table 14-8 on page
278, and
155, and
276.
32.
150.
103.
160.
Table 27-17 on
131,
Table 27-5 on
241.
Table 17-
53,
43.
Table
205.
102,
31