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ATmega168A
ATmega168A | |
|---|---|
| Manufacturer Part Number | ATmega168A |
| Manufacturer | Atmel Corporation |
| ATmega168A 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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PrevNext
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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