ATmega168A

Manufacturer Part NumberATmega168A
ManufacturerAtmel Corporation
ATmega168A datasheets
 


Specifications of ATmega168A

Flash (kbytes)16 KbytesPin Count32
Max. Operating Frequency20 MHzCpu8-bit AVR
# Of Touch Channels16Hardware Qtouch AcquisitionNo
Max I/o Pins23Ext Interrupts24
Usb SpeedNoUsb InterfaceNo
Spi2Twi (i2c)1
Uart1Graphic LcdNo
Video DecoderNoCamera InterfaceNo
Adc Channels8Adc Resolution (bits)10
Adc Speed (ksps)15Analog Comparators1
Resistive Touch ScreenNoTemp. SensorYes
Crypto EngineNoSram (kbytes)1
Eeprom (bytes)512Self Program MemoryYES
Dram MemoryNoNand InterfaceNo
PicopowerNoTemp. Range (deg C)-40 to 85
I/o Supply Class1.8 to 5.5Operating Voltage (vcc)1.8 to 5.5
FpuNoMpu / Mmuno / no
Timers3Output Compare Channels6
Input Capture Channels1Pwm Channels6
32khz RtcYesCalibrated Rc OscillatorYes
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Page 86/567

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(one)) to serve this function. The OC1A pin is also the output pin for the PWM mode timer
function.
PCINT1: Pin Change Interrupt source 1. The PB1 pin can serve as an external interrupt source.
• ICP1/CLKO/PCINT0 – Port B, Bit 0
ICP1, Input Capture Pin: The PB0 pin can act as an Input Capture Pin for Timer/Counter1.
CLKO, Divided System Clock: The divided system clock can be output on the PB0 pin. The
divided system clock will be output if the CKOUT Fuse is programmed, regardless of the
PORTB0 and DDB0 settings. It will also be output during reset.
PCINT0: Pin Change Interrupt source 0. The PB0 pin can serve as an external interrupt source.
Table 14-4
signals shown in
tute the MISO signal, while MOSI is divided into SPI MSTR OUTPUT and SPI SLAVE INPUT.
Table 14-4.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
DIEOE
DIEOV
DI
AIO
Notes:
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
and
Table 14-5 on page 87
relate the alternate functions of Port B to the overriding
Figure 14-5 on page
82. SPI MSTR INPUT and SPI SLAVE OUTPUT consti-
Overriding Signals for Alternate Functions in PB7...PB4
PB7/XTAL2/
PB6/XTAL1/
(1)
TOSC2/PCINT7
TOSC1/PCINT6
INTRC • EXTCK+
INTRC + AS2
AS2
0
0
INTRC • EXTCK+
INTRC + AS2
AS2
0
0
0
0
0
0
INTRC • EXTCK +
INTRC + AS2 +
AS2 + PCINT7 •
PCINT6 • PCIE0
PCIE0
(INTRC + EXTCK) •
INTRC • AS2
AS2
PCINT7 INPUT
PCINT6 INPUT
Oscillator/Clock
Oscillator Output
Input
1. INTRC means that one of the internal RC Oscillators are selected (by the CKSEL fuses),
EXTCK means that external clock is selected (by the CKSEL fuses)
PB5/SCK/
PB4/MISO/
(1)
PCINT5
PCINT4
SPE • MSTR
SPE • MSTR
PORTB5 • PUD
PORTB4 • PUD
SPE • MSTR
SPE • MSTR
0
0
SPE • MSTR
SPE • MSTR
SPI SLAVE
SCK OUTPUT
OUTPUT
PCINT5 • PCIE0
PCINT4 • PCIE0
1
1
PCINT5 INPUT
PCINT4 INPUT
SCK INPUT
SPI MSTR INPUT
86