ATmega168P Atmel Corporation, ATmega168P Datasheet - Page 413

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ATmega168P

Manufacturer Part Number
ATmega168P
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega168P

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
Yes
Crypto Engine
No
Sram (kbytes)
1
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
Yes
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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Table of Contents
8025M–AVR–6/11
1
2
3
4
5
6
7
8
9
Features ..................................................................................................... 1
Pin Configurations ................................................................................... 2
Overview ................................................................................................... 4
Resources ................................................................................................. 8
Data Retention .......................................................................................... 8
About Code Examples ............................................................................. 8
Capacitive touch sensing ........................................................................ 8
AVR CPU Core .......................................................................................... 9
AVR Memories ........................................................................................ 17
System Clock and Clock Options ......................................................... 27
1.1Pin Descriptions ........................................................................................................3
2.1Block Diagram ...........................................................................................................5
2.2Comparison Between ATmega48P, ATmega88P and ATmega168P .......................7
7.1Overview ...................................................................................................................9
7.2ALU – Arithmetic Logic Unit ....................................................................................10
7.3Status Register ........................................................................................................10
7.4General Purpose Register File ................................................................................12
7.5Stack Pointer ...........................................................................................................13
7.6Instruction Execution Timing ...................................................................................14
7.7Reset and Interrupt Handling ..................................................................................15
8.1Overview .................................................................................................................17
8.2In-System Reprogrammable Flash Program Memory .............................................17
8.3SRAM Data Memory ...............................................................................................19
8.4EEPROM Data Memory ..........................................................................................20
8.5I/O Memory ..............................................................................................................21
8.6Register Description ................................................................................................22
9.1Clock Systems and their Distribution .......................................................................27
9.2Clock Sources .........................................................................................................28
9.3Low Power Crystal Oscillator ...................................................................................29
9.4Full Swing Crystal Oscillator ....................................................................................31
9.5Low Frequency Crystal Oscillator ............................................................................33
ATmega48P/88P/168P
i

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