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
show all specifications
ATMEGA168A PDF datasheetATMEGA168A PDF datasheet #2
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Table 20-6.
Examples of UBRRn Settings for Commonly Used Oscillator Frequencies (Continued)
f
= 16.0000MHz
osc
Baud
U2Xn = 0
U2Xn = 1
Rate
(bps)
UBRRn
Error
UBRRn
2400
416
-0.1%
832
4800
207
0.2%
416
9600
103
0.2%
207
14.4k
68
0.6%
138
19.2k
51
0.2%
103
28.8k
34
-0.8%
68
38.4k
25
0.2%
51
57.6k
16
2.1%
34
76.8k
12
0.2%
25
115.2k
8
-3.5%
16
230.4k
3
8.5%
8
250k
3
0.0%
7
0.5M
1
0.0%
3
1M
0
0.0%
1
(1)
Max.
1Mbps
1.
UBRRn = 0, Error = 0.0%
8271D–AVR–05/11
ATmega48A/PA/88A/PA/168A/PA/328/P
f
= 18.4320MHz
osc
U2Xn = 0
Error
UBRRn
Error
UBRRn
0.0%
479
0.0%
-0.1%
239
0.0%
0.2%
119
0.0%
-0.1%
79
0.0%
0.2%
59
0.0%
0.6%
39
0.0%
0.2%
29
0.0%
-0.8%
19
0.0%
0.2%
14
0.0%
2.1%
9
0.0%
-3.5%
4
0.0%
0.0%
4
-7.8%
0.0%
–
–
0.0%
–
–
2Mbps
1.152Mbps
f
= 20.0000MHz
osc
U2Xn = 1
U2Xn = 0
Error
UBRRn
Error
959
0.0%
520
0.0%
479
0.0%
259
0.2%
239
0.0%
129
0.2%
159
0.0%
86
-0.2%
119
0.0%
64
0.2%
79
0.0%
42
0.9%
59
0.0%
32
-1.4%
39
0.0%
21
-1.4%
29
0.0%
15
1.7%
19
0.0%
10
-1.4%
9
0.0%
4
8.5%
8
2.4%
4
0.0%
4
-7.8%
–
–
–
–
–
–
2.304Mbps
1.25Mbps
U2Xn = 1
UBRRn
Error
1041
0.0%
520
0.0%
259
0.2%
173
-0.2%
129
0.2%
86
-0.2%
64
0.2%
42
0.9%
32
-1.4%
21
-1.4%
10
-1.4%
9
0.0%
4
0.0%
–
–
2.5Mbps
200

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