ATmega168 Atmel Corporation, ATmega168 Datasheet - Page 34

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ATmega168

Manufacturer Part Number
ATmega168
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega168

Flash (kbytes)
16 Kbytes
Pin Count
32
Max. Operating Frequency
20 MHz
Cpu
8-bit AVR
# Of Touch Channels
16
Hardware Qtouch Acquisition
No
Max I/o Pins
23
Ext Interrupts
24
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
8
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
3
Output Compare Channels
6
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes

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12.17 Rev. 2545D-07/04
12.18 Rev. 2545C-04/04
12.19 Rev. 2545B-01/04
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
1.
2.
3.
4.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Updated instructions used with WDTCSR in relevant code examples.
Updated
and
Updated
Moved
“TIFR2 – Timer/Counter2 interrupt flag register” on page 157
“Register description” on page
Updated cross-reference in
Updated equation in
Added
Updated
Updated Ordering Information for
Updated
page
Updated equation in
Speed Grades changed: 12MHz to 10MHz and 24MHz to 20MHz
Updated
Updated
Updated
Added PDIP to “I/O and Packages”, updated “Speed Grade” and Power Consumption
Estimates in
Updated
value.
Added section
the PRR bits to 2-wire, Timer/Counters, USART, Analog Comparator and ADC
sections.
Updated
Updated
Extra Compare Match Interrupt OCF2B added to features in section
Timer/Counter2 with PWM and asynchronous operation” on page 139
Updated
page 285 to 287 and
284. Fixed typo in
Updated whole
Added item 2 to 5 in
Table 26-11 on page
27.
“Page size” on page
“TIMSK2 – Timer/Counter2 interrupt mask register” on page 157
“System clock prescaler” on page
“Serial programming algorithm” on page
“Speed grades” on page
“Ordering information” on page
“Errata Atmel ATmega88” on page
“Watchdog timer” on page
Figure 15-2 on page 129
Table 9-1 on page
“Stack pointer” on page 12
Table 8-5 on page
“Errata Atmel ATmega88” on page 25
11.“Features” on page
“Power reduction register” on page 40
“Typical characteristics” on page
Table 12-1 on page
“Errata Atmel ATmega48” on page
“Bit rate generator unit” on page
“Bit rate generator unit” on page
Table 23-1 on page
282.
“Electrical interconnection” on page
288.
38,
30,
152.
Table 23-5 on page
Table 28-4 on page
“Atmel ATmega168” on page
304.
and
1.
48.
with RAMEND as recommended Stack Pointer
66.
Table 15-3 on page
15.
248. Added note 2 to
35.
25.
314.
and
298.
258,
215.
215.
and a note regarding the use of
“Errata Atmel ATmega168” on
306,
22.
Table 27-4
130.
Table 26-9 on page
to
17.
209.
Table 27-1 on page
to
Table 27-7
and
“8-bit
281,
on

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