ATmega168P Atmel Corporation, ATmega168P Datasheet - Page 7

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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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2.2
8025M–AVR–6/11
Comparison Between ATmega48P, ATmega88P and ATmega168P
The ATmega48P, ATmega88P and ATmega168P differ only in memory sizes, boot loader sup-
port, and interrupt vector sizes.
sizes for the three devices.
Table 2-1.
ATmega88P and ATmega168P support a real Read-While-Write Self-Programming mechanism.
There is a separate Boot Loader Section, and the SPM instruction can only execute from there.
In ATmega48P, there is no Read-While-Write support and no separate Boot Loader Section.
The SPM instruction can execute from the entire Flash.
Device
ATmega48P
ATmega88P
ATmega168P
Memory Size Summary
Flash
4KBytes
8KBytes
16KBytes
Table 2-1
EEPROM
256Bytes
512Bytes
512Bytes
summarizes the different memory and interrupt vector
RAM
512Bytes
1KBytes
1KBytes
ATmega48P/88P/168P
Interrupt Vector Size
1 instruction word/vector
1 instruction word/vector
2 instruction words/vector
7

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