ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 156

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ATmega168A

Manufacturer Part Number
ATmega168A
Description
Manufacturer
Atmel Corporation
Datasheets

Specifications of ATmega168A

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
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
Figure 18-9. Timer/Counter Timing Diagram, with Prescaler (f
clk
clk
(clk
TCNTn
TOVn
Figure 18-10
Figure 18-10. Timer/Counter Timing Diagram, Setting of OCF2A, with Prescaler (f
clk
clk
(clk
TCNTn
OCRnx
OCFnx
Figure 18-11
Figure 18-11. Timer/Counter Timing Diagram, Clear Timer on Compare Match mode, with Pres-
clk
clk
(clk
TCNTn
(CTC)
OCRnx
OCFnx
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
I/O
Tn
/8)
I/O
MAX - 1
shows the setting of OCF2A in all modes except CTC mode.
I/O
Tn
/8)
I/O
OCRnx - 1
shows the setting of OCF2A and the clearing of TCNT2 in CTC mode.
caler (f
/8)
clk_I/O
I/O
Tn
/8)
I/O
TOP - 1
TOP
/8)
clk_I/O
MAX
BOTTOM
OCRnx
OCRnx + 1
OCRnx Value
BOTTOM
BOTTOM + 1
TOP
BOTTOM + 1
/8)
clk_I/O
OCRnx + 2
156

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