ATmega168A Atmel Corporation, ATmega168A Datasheet - Page 89

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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

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8271D–AVR–05/11
• ADC1/PCINT9 – Port C, Bit 1
PC1 can also be used as ADC input Channel 1. Note that ADC input channel 1 uses analog
power.
PCINT9: Pin Change Interrupt source 9. The PC1 pin can serve as an external interrupt source.
• ADC0/PCINT8 – Port C, Bit 0
PC0 can also be used as ADC input Channel 0. Note that ADC input channel 0 uses analog
power.
PCINT8: Pin Change Interrupt source 8. The PC0 pin can serve as an external interrupt source.
Table 14-7
shown in
Table 14-7.
Note:
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
1. When enabled, the 2-wire Serial Interface enables slew-rate controls on the output pins PC4
Figure 14-5 on page
PC6/RESET/PCINT14
RSTDISBL
1
RSTDISBL
0
0
0
RSTDISBL + PCINT14 •
PCIE1
RSTDISBL
PCINT14 INPUT
RESET INPUT
and PC5. This is not shown in the figure. In addition, spike filters are connected between the
AIO outputs shown in the port figure and the digital logic of the TWI module.
and
Overriding Signals for Alternate Functions in PC6...PC4
Table 14-8
ATmega48A/PA/88A/PA/168A/PA/328/P
relate the alternate functions of Port C to the overriding signals
82.
PC5/SCL/ADC5/PCINT13
TWEN
PORTC5 • PUD
TWEN
SCL_OUT
TWEN
0
PCINT13 • PCIE1 + ADC5D
PCINT13 • PCIE1
PCINT13 INPUT
ADC5 INPUT / SCL INPUT
PC4/SDA/ADC4/PCINT12
TWEN
PORTC4 • PUD
TWEN
SDA_OUT
TWEN
0
PCINT12 • PCIE1 + ADC4D
PCINT12 • PCIE1
PCINT12 INPUT
ADC4 INPUT / SDA INPUT
(1)
89

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