ATmega168 Atmel Corporation, ATmega168 Datasheet - Page 306
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
ATmega168
Manufacturer Part Number
ATmega168
Description
Manufacturer
Atmel Corporation
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA168
Manufacturer:
AVAILINK
Quantity:
1 590
Company:
Part Number:
ATmega168-15AD
Manufacturer:
VISHAY
Quantity:
15 600
Part Number:
ATmega168-15AT1
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega168-15MT
Manufacturer:
ATMEL
Quantity:
686
Part Number:
ATmega168-15MT
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATmega168-15MT1
Manufacturer:
ATMEL
Quantity:
372
Part Number:
ATmega168-15MZ
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Part Number:
ATmega168-20AU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
29.4
29.4.1
Table 29-1.
Notes:
29.4.2
29.4.3
2545T–AVR–05/11
Factory calibration
User calibration
Clock characteristics
1. Voltage range for Atmel ATmega48V/88V/168V.
2. Voltage range for Atmel ATmega48/88/168.
Calibrated internal RC oscillator accuracy
External clock drive waveforms
External clock drive
Calibration accuracy of internal RC oscillator.
Figure 29-3. External clock drive waveforms.
Table 29-2.
Symbol
1/t
t
t
t
t
t
Δ
CLCL
CHCX
CLCX
CLCH
CHCL
7.3MHz - 8.1MHz
t
CLCL
CLCL
Frequency
8.0MHz
Parameter
Oscillator
frequency
Clock period
High time
Low time
Rise time
Fall time
Change in period
from one clock
cycle to the next
V
External clock drive.
IL1
V
IH1
1.8V - 5.5V
2.7V - 5.5V
V
V
3V
Min.
CC
CC
250
100
100
0
= 1.8V - 5.5V
(1)
(2)
Max.
2.0
2.0
4
2
V
Min.
CC
Temperature
100
-40°C - 85°C
40
40
0
= 2.7V - 5.5V
25°C
Max.
ATmega48/88/168
1.6
1.6
10
2
V
Min.
CC
50
20
20
0
Calibration accuracy
= 4.5V - 5.5V
Max.
±10%
±1%
0.5
0.5
20
2
Units
MHz
ns
μs
%
306