32.768 Khz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 6 | 0x0006 | 2.5 |
600 | 2 | 0x0002 | 12.1 |
1200 | 1 | 0x0001 | 17.2 |
2400 | 0 | 0x0000 | 17.2 |
4800 | 0 | 0x0000 | 134.4 |
9600 | 0 | 0x0000 | 368.8 |
14400 | 0 | 0x0000 | 603.1 |
19200 | 0 | 0x0000 | 837.5 |
28800 | 0 | 0x0000 | 1306.2 |
38400 | 0 | 0x0000 | 1775.0 |
57600 | 0 | 0x0000 | 2712.5 |
76800 | 0 | 0x0000 | 3650.0 |
115200 | 0 | 0x0000 | 5525.0 |
230400 | 0 | 0x0000 | 11150.0 |
1.8432 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 383 | 0x017F | 0.0 |
600 | 191 | 0x00BF | 0.0 |
1200 | 95 | 0x005F | 0.0 |
2400 | 47 | 0x002F | 0.0 |
4800 | 23 | 0x0017 | 0.0 |
9600 | 11 | 0x000B | 0.0 |
14400 | 7 | 0x0007 | 0.0 |
19200 | 5 | 0x0005 | 0.0 |
28800 | 3 | 0x0003 | 0.0 |
38400 | 2 | 0x0002 | 0.0 |
57600 | 1 | 0x0001 | 0.0 |
76800 | 1 | 0x0001 | 33.3 |
115200 | 0 | 0x0000 | 0.0 |
230400 | 0 | 0x0000 | 100.0 |
2.4576 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 511 | 0x01FF | 0.0 |
600 | 255 | 0x00FF | 0.0 |
1200 | 127 | 0x007F | 0.0 |
2400 | 63 | 0x003F | 0.0 |
4800 | 31 | 0x001F | 0.0 |
9600 | 15 | 0x000F | 0.0 |
14400 | 10 | 0x000A | 3.1 |
19200 | 7 | 0x0007 | 0.0 |
28800 | 4 | 0x0004 | 6.2 |
38400 | 3 | 0x0003 | 0.0 |
57600 | 2 | 0x0002 | 12.5 |
76800 | 1 | 0x0001 | 0.0 |
115200 | 0 | 0x0000 | 25.0 |
230400 | 0 | 0x0000 | 50.0 |
3.072 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 639 | 0x027F | 0.0 |
600 | 319 | 0x013F | 0.0 |
1200 | 159 | 0x009F | 0.0 |
2400 | 79 | 0x004F | 0.0 |
4800 | 39 | 0x0027 | 0.0 |
9600 | 19 | 0x0013 | 0.0 |
14400 | 12 | 0x000C | 2.5 |
19200 | 9 | 0x0009 | 0.0 |
28800 | 6 | 0x0006 | 5.0 |
38400 | 4 | 0x0004 | 0.0 |
57600 | 2 | 0x0002 | 10.0 |
76800 | 2 | 0x0002 | 20.0 |
115200 | 1 | 0x0001 | 20.0 |
230400 | 0 | 0x0000 | 20.0 |
3.2768 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 682 | 0x02AA | 0.0 |
600 | 340 | 0x0154 | 0.0 |
1200 | 170 | 0x00AA | 0.2 |
2400 | 84 | 0x0054 | 0.4 |
4800 | 42 | 0x002A | 0.8 |
9600 | 20 | 0x0014 | 1.6 |
14400 | 13 | 0x000D | 1.6 |
19200 | 10 | 0x000A | 3.1 |
28800 | 6 | 0x0006 | 1.6 |
38400 | 4 | 0x0004 | 6.2 |
57600 | 3 | 0x0003 | 12.5 |
76800 | 2 | 0x0002 | 12.5 |
115200 | 1 | 0x0001 | 12.5 |
230400 | 0 | 0x0000 | 12.5 |
3.579545 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 745 | 0x02E9 | 0.0 |
600 | 372 | 0x0174 | 0.0 |
1200 | 185 | 0x00B9 | 0.2 |
2400 | 92 | 0x005C | 0.2 |
4800 | 46 | 0x002E | 0.8 |
9600 | 22 | 0x0016 | 1.3 |
14400 | 15 | 0x000F | 3.0 |
19200 | 11 | 0x000B | 3.0 |
28800 | 7 | 0x0007 | 3.0 |
38400 | 5 | 0x0005 | 3.0 |
57600 | 3 | 0x0003 | 3.0 |
76800 | 2 | 0x0002 | 3.0 |
115200 | 1 | 0x0001 | 3.0 |
230400 | 0 | 0x0000 | 3.0 |
3.6864 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 767 | 0x02FF | 0.0 |
600 | 383 | 0x017F | 0.0 |
1200 | 191 | 0x00BF | 0.0 |
2400 | 95 | 0x005F | 0.0 |
4800 | 47 | 0x002F | 0.0 |
9600 | 23 | 0x0017 | 0.0 |
14400 | 15 | 0x000F | 0.0 |
19200 | 11 | 0x000B | 0.0 |
28800 | 7 | 0x0007 | 0.0 |
38400 | 5 | 0x0005 | 0.0 |
57600 | 3 | 0x0003 | 0.0 |
76800 | 2 | 0x0002 | 0.0 |
115200 | 1 | 0x0001 | 0.0 |
230400 | 0 | 0x0000 | 0.0 |
3.93216 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 818 | 0x0332 | 0.0 |
600 | 409 | 0x0199 | 0.0 |
1200 | 204 | 0x00CC | 0.0 |
2400 | 101 | 0x0065 | 0.4 |
4800 | 50 | 0x0032 | 0.4 |
9600 | 25 | 0x0019 | 1.6 |
14400 | 16 | 0x0010 | 0.4 |
19200 | 12 | 0x000C | 1.6 |
28800 | 8 | 0x0008 | 5.5 |
38400 | 5 | 0x0005 | 6.2 |
57600 | 3 | 0x0003 | 6.2 |
76800 | 2 | 0x0002 | 6.2 |
115200 | 1 | 0x0001 | 6.2 |
230400 | 0 | 0x0000 | 6.2 |
4 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 832 | 0x0340 | 0.0 |
600 | 416 | 0x01A0 | 0.0 |
1200 | 207 | 0x00CF | 0.2 |
2400 | 103 | 0x0067 | 0.2 |
4800 | 51 | 0x0033 | 0.2 |
9600 | 25 | 0x0019 | 0.2 |
14400 | 16 | 0x0010 | 2.1 |
19200 | 12 | 0x000C | 0.2 |
28800 | 8 | 0x0008 | 3.7 |
38400 | 6 | 0x0006 | 7.5 |
57600 | 3 | 0x0003 | 7.8 |
76800 | 2 | 0x0002 | 7.8 |
115200 | 1 | 0x0001 | 7.8 |
230400 | 0 | 0x0000 | 7.8 |
4.194304 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 873 | 0x0369 | 0.0 |
600 | 436 | 0x01B4 | 0.0 |
1200 | 217 | 0x00D9 | 0.2 |
2400 | 108 | 0x006C | 0.2 |
4800 | 54 | 0x0036 | 0.7 |
9600 | 26 | 0x001A | 1.1 |
14400 | 17 | 0x0011 | 1.1 |
19200 | 13 | 0x000D | 2.5 |
28800 | 8 | 0x0008 | 1.1 |
38400 | 6 | 0x0006 | 2.5 |
57600 | 4 | 0x0004 | 9.9 |
76800 | 2 | 0x0002 | 12.1 |
115200 | 1 | 0x0001 | 12.1 |
230400 | 0 | 0x0000 | 12.1 |
4.433619 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 923 | 0x039B | 0.0 |
600 | 461 | 0x01CD | 0.0 |
1200 | 230 | 0x00E6 | 0.0 |
2400 | 114 | 0x0072 | 0.4 |
4800 | 57 | 0x0039 | 0.5 |
9600 | 28 | 0x001C | 0.5 |
14400 | 18 | 0x0012 | 1.3 |
19200 | 13 | 0x000D | 3.0 |
28800 | 9 | 0x0009 | 3.9 |
38400 | 6 | 0x0006 | 3.0 |
57600 | 4 | 0x0004 | 3.9 |
76800 | 3 | 0x0003 | 10.9 |
115200 | 1 | 0x0001 | 16.9 |
230400 | 0 | 0x0000 | 16.9 |
4.608 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 959 | 0x03BF | 0.0 |
600 | 479 | 0x01DF | 0.0 |
1200 | 239 | 0x00EF | 0.0 |
2400 | 119 | 0x0077 | 0.0 |
4800 | 59 | 0x003B | 0.0 |
9600 | 29 | 0x001D | 0.0 |
14400 | 19 | 0x0013 | 0.0 |
19200 | 14 | 0x000E | 0.0 |
28800 | 9 | 0x0009 | 0.0 |
38400 | 7 | 0x0007 | 6.7 |
57600 | 4 | 0x0004 | 0.0 |
76800 | 3 | 0x0003 | 6.7 |
115200 | 2 | 0x0002 | 20.0 |
230400 | 0 | 0x0000 | 20.0 |
4.9152 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1023 | 0x03FF | 0.0 |
600 | 511 | 0x01FF | 0.0 |
1200 | 255 | 0x00FF | 0.0 |
2400 | 127 | 0x007F | 0.0 |
4800 | 63 | 0x003F | 0.0 |
9600 | 31 | 0x001F | 0.0 |
14400 | 20 | 0x0014 | 1.6 |
19200 | 15 | 0x000F | 0.0 |
28800 | 10 | 0x000A | 3.1 |
38400 | 7 | 0x0007 | 0.0 |
57600 | 4 | 0x0004 | 6.2 |
76800 | 3 | 0x0003 | 0.0 |
115200 | 2 | 0x0002 | 12.5 |
230400 | 0 | 0x0000 | 25.0 |
5 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1041 | 0x0411 | 0.0 |
600 | 520 | 0x0208 | 0.0 |
1200 | 259 | 0x0103 | 0.2 |
2400 | 129 | 0x0081 | 0.2 |
4800 | 64 | 0x0040 | 0.2 |
9600 | 32 | 0x0020 | 1.4 |
14400 | 21 | 0x0015 | 1.4 |
19200 | 15 | 0x000F | 1.7 |
28800 | 10 | 0x000A | 1.4 |
38400 | 7 | 0x0007 | 1.7 |
57600 | 4 | 0x0004 | 7.8 |
76800 | 3 | 0x0003 | 1.7 |
115200 | 2 | 0x0002 | 10.6 |
230400 | 0 | 0x0000 | 26.3 |
5.0688 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1055 | 0x041F | 0.0 |
600 | 527 | 0x020F | 0.0 |
1200 | 263 | 0x0107 | 0.0 |
2400 | 131 | 0x0083 | 0.0 |
4800 | 65 | 0x0041 | 0.0 |
9600 | 32 | 0x0020 | 0.0 |
14400 | 21 | 0x0015 | 0.0 |
19200 | 16 | 0x0010 | 3.0 |
28800 | 10 | 0x000A | 0.0 |
38400 | 7 | 0x0007 | 3.0 |
57600 | 5 | 0x0005 | 9.1 |
76800 | 3 | 0x0003 | 3.0 |
115200 | 2 | 0x0002 | 9.1 |
230400 | 0 | 0x0000 | 27.3 |
6.144 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1279 | 0x04FF | 0.0 |
600 | 639 | 0x027F | 0.0 |
1200 | 319 | 0x013F | 0.0 |
2400 | 159 | 0x009F | 0.0 |
4800 | 79 | 0x004F | 0.0 |
9600 | 39 | 0x0027 | 0.0 |
14400 | 26 | 0x001A | 1.2 |
19200 | 19 | 0x0013 | 0.0 |
28800 | 12 | 0x000C | 2.5 |
38400 | 9 | 0x0009 | 0.0 |
57600 | 6 | 0x0006 | 5.0 |
76800 | 4 | 0x0004 | 0.0 |
115200 | 2 | 0x0002 | 10.0 |
230400 | 1 | 0x0001 | 20.0 |
6.4 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1332 | 0x0534 | 0.0 |
600 | 666 | 0x029A | 0.0 |
1200 | 332 | 0x014C | 0.1 |
2400 | 166 | 0x00A6 | 0.2 |
4800 | 82 | 0x0052 | 0.4 |
9600 | 41 | 0x0029 | 0.8 |
14400 | 27 | 0x001B | 0.8 |
19200 | 20 | 0x0014 | 0.8 |
28800 | 13 | 0x000D | 0.8 |
38400 | 9 | 0x0009 | 4.0 |
57600 | 6 | 0x0006 | 0.8 |
76800 | 4 | 0x0004 | 4.0 |
115200 | 2 | 0x0002 | 13.6 |
230400 | 1 | 0x0001 | 15.2 |
7.3728 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1535 | 0x05FF | 0.0 |
600 | 767 | 0x02FF | 0.0 |
1200 | 383 | 0x017F | 0.0 |
2400 | 191 | 0x00BF | 0.0 |
4800 | 95 | 0x005F | 0.0 |
9600 | 47 | 0x002F | 0.0 |
14400 | 31 | 0x001F | 0.0 |
19200 | 23 | 0x0017 | 0.0 |
28800 | 15 | 0x000F | 0.0 |
38400 | 11 | 0x000B | 0.0 |
57600 | 7 | 0x0007 | 0.0 |
76800 | 5 | 0x0005 | 0.0 |
115200 | 3 | 0x0003 | 0.0 |
230400 | 1 | 0x0001 | 0.0 |
8 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1666 | 0x0682 | 0.0 |
600 | 832 | 0x0340 | 0.0 |
1200 | 416 | 0x01A0 | 0.0 |
2400 | 207 | 0x00CF | 0.2 |
4800 | 103 | 0x0067 | 0.2 |
9600 | 51 | 0x0033 | 0.2 |
14400 | 34 | 0x0022 | 0.8 |
19200 | 25 | 0x0019 | 0.2 |
28800 | 16 | 0x0010 | 2.1 |
38400 | 12 | 0x000C | 0.2 |
57600 | 8 | 0x0008 | 3.7 |
76800 | 6 | 0x0006 | 7.5 |
115200 | 3 | 0x0003 | 7.8 |
230400 | 1 | 0x0001 | 7.8 |
9.216 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 1919 | 0x077F | 0.0 |
600 | 959 | 0x03BF | 0.0 |
1200 | 479 | 0x01DF | 0.0 |
2400 | 239 | 0x00EF | 0.0 |
4800 | 119 | 0x0077 | 0.0 |
9600 | 59 | 0x003B | 0.0 |
14400 | 39 | 0x0027 | 0.0 |
19200 | 29 | 0x001D | 0.0 |
28800 | 19 | 0x0013 | 0.0 |
38400 | 14 | 0x000E | 0.0 |
57600 | 9 | 0x0009 | 0.0 |
76800 | 7 | 0x0007 | 6.7 |
115200 | 4 | 0x0004 | 0.0 |
230400 | 2 | 0x0002 | 20.0 |
10 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2082 | 0x0822 | 0.0 |
600 | 1041 | 0x0411 | 0.0 |
1200 | 520 | 0x0208 | 0.0 |
2400 | 259 | 0x0103 | 0.2 |
4800 | 129 | 0x0081 | 0.2 |
9600 | 64 | 0x0040 | 0.2 |
14400 | 42 | 0x002A | 0.9 |
19200 | 32 | 0x0020 | 1.4 |
28800 | 21 | 0x0015 | 1.4 |
38400 | 15 | 0x000F | 1.7 |
57600 | 10 | 0x000A | 1.4 |
76800 | 7 | 0x0007 | 1.7 |
115200 | 4 | 0x0004 | 7.8 |
230400 | 2 | 0x0002 | 10.6 |
10.24 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2132 | 0x0854 | 0.0 |
600 | 1066 | 0x042A | 0.0 |
1200 | 532 | 0x0214 | 0.0 |
2400 | 266 | 0x010A | 0.1 |
4800 | 132 | 0x0084 | 0.2 |
9600 | 66 | 0x0042 | 0.5 |
14400 | 43 | 0x002B | 1.0 |
19200 | 32 | 0x0020 | 1.0 |
28800 | 21 | 0x0015 | 1.0 |
38400 | 16 | 0x0010 | 2.0 |
57600 | 10 | 0x000A | 1.0 |
76800 | 7 | 0x0007 | 4.0 |
115200 | 5 | 0x0005 | 8.0 |
230400 | 2 | 0x0002 | 8.0 |
11.0592 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2303 | 0x08FF | 0.0 |
600 | 1151 | 0x047F | 0.0 |
1200 | 575 | 0x023F | 0.0 |
2400 | 287 | 0x011F | 0.0 |
4800 | 143 | 0x008F | 0.0 |
9600 | 71 | 0x0047 | 0.0 |
14400 | 47 | 0x002F | 0.0 |
19200 | 35 | 0x0023 | 0.0 |
28800 | 23 | 0x0017 | 0.0 |
38400 | 17 | 0x0011 | 0.0 |
57600 | 11 | 0x000B | 0.0 |
76800 | 8 | 0x0008 | 0.0 |
115200 | 5 | 0x0005 | 0.0 |
230400 | 2 | 0x0002 | 0.0 |
12 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2499 | 0x09C3 | 0.0 |
600 | 1249 | 0x04E1 | 0.0 |
1200 | 624 | 0x0270 | 0.0 |
2400 | 312 | 0x0138 | 0.2 |
4800 | 155 | 0x009B | 0.2 |
9600 | 77 | 0x004D | 0.2 |
14400 | 51 | 0x0033 | 0.2 |
19200 | 38 | 0x0026 | 0.2 |
28800 | 25 | 0x0019 | 0.2 |
38400 | 19 | 0x0013 | 2.4 |
57600 | 12 | 0x000C | 0.2 |
76800 | 9 | 0x0009 | 2.4 |
115200 | 6 | 0x0006 | 7.5 |
230400 | 2 | 0x0002 | 7.8 |
12.288 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2559 | 0x09FF | 0.0 |
600 | 1279 | 0x04FF | 0.0 |
1200 | 639 | 0x027F | 0.0 |
2400 | 319 | 0x013F | 0.0 |
4800 | 159 | 0x009F | 0.0 |
9600 | 79 | 0x004F | 0.0 |
14400 | 52 | 0x0034 | 0.6 |
19200 | 39 | 0x0027 | 0.0 |
28800 | 26 | 0x001A | 1.2 |
38400 | 19 | 0x0013 | 0.0 |
57600 | 12 | 0x000C | 2.5 |
76800 | 9 | 0x0009 | 0.0 |
115200 | 6 | 0x0006 | 5.0 |
230400 | 2 | 0x0002 | 10.0 |
12.8 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2666 | 0x0A6A | 0.0 |
600 | 1332 | 0x0534 | 0.0 |
1200 | 666 | 0x029A | 0.0 |
2400 | 332 | 0x014C | 0.1 |
4800 | 166 | 0x00A6 | 0.2 |
9600 | 82 | 0x0052 | 0.4 |
14400 | 55 | 0x0037 | 0.8 |
19200 | 41 | 0x0029 | 0.8 |
28800 | 27 | 0x001B | 0.8 |
38400 | 20 | 0x0014 | 0.8 |
57600 | 13 | 0x000D | 0.8 |
76800 | 9 | 0x0009 | 4.0 |
115200 | 6 | 0x0006 | 0.8 |
230400 | 2 | 0x0002 | 13.6 |
14.318182 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 2982 | 0x0BA6 | 0.0 |
600 | 1490 | 0x05D2 | 0.0 |
1200 | 745 | 0x02E9 | 0.0 |
2400 | 372 | 0x0174 | 0.0 |
4800 | 185 | 0x00B9 | 0.2 |
9600 | 92 | 0x005C | 0.2 |
14400 | 61 | 0x003D | 0.2 |
19200 | 46 | 0x002E | 0.8 |
28800 | 30 | 0x001E | 0.2 |
38400 | 22 | 0x0016 | 1.3 |
57600 | 15 | 0x000F | 3.0 |
76800 | 11 | 0x000B | 3.0 |
115200 | 7 | 0x0007 | 3.0 |
230400 | 3 | 0x0003 | 3.0 |
14.7456 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 3071 | 0x0BFF | 0.0 |
600 | 1535 | 0x05FF | 0.0 |
1200 | 767 | 0x02FF | 0.0 |
2400 | 383 | 0x017F | 0.0 |
4800 | 191 | 0x00BF | 0.0 |
9600 | 95 | 0x005F | 0.0 |
14400 | 63 | 0x003F | 0.0 |
19200 | 47 | 0x002F | 0.0 |
28800 | 31 | 0x001F | 0.0 |
38400 | 23 | 0x0017 | 0.0 |
57600 | 15 | 0x000F | 0.0 |
76800 | 11 | 0x000B | 0.0 |
115200 | 7 | 0x0007 | 0.0 |
230400 | 3 | 0x0003 | 0.0 |
16 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 3332 | 0x0D04 | 0.0 |
600 | 1666 | 0x0682 | 0.0 |
1200 | 832 | 0x0340 | 0.0 |
2400 | 416 | 0x01A0 | 0.0 |
4800 | 207 | 0x00CF | 0.2 |
9600 | 103 | 0x0067 | 0.2 |
14400 | 68 | 0x0044 | 0.6 |
19200 | 51 | 0x0033 | 0.2 |
28800 | 34 | 0x0022 | 0.8 |
38400 | 25 | 0x0019 | 0.2 |
57600 | 16 | 0x0010 | 2.1 |
76800 | 12 | 0x000C | 0.2 |
115200 | 8 | 0x0008 | 3.7 |
230400 | 3 | 0x0003 | 7.8 |
16.8 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 3499 | 0x0DAB | 0.0 |
600 | 1749 | 0x06D5 | 0.0 |
1200 | 874 | 0x036A | 0.0 |
2400 | 437 | 0x01B5 | 0.1 |
4800 | 218 | 0x00DA | 0.1 |
9600 | 108 | 0x006C | 0.3 |
14400 | 72 | 0x0048 | 0.1 |
19200 | 54 | 0x0036 | 0.6 |
28800 | 35 | 0x0023 | 1.3 |
38400 | 26 | 0x001A | 1.3 |
57600 | 17 | 0x0011 | 1.3 |
76800 | 13 | 0x000D | 2.4 |
115200 | 8 | 0x0008 | 1.3 |
230400 | 4 | 0x0004 | 9.7 |
18.432 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 3839 | 0x0EFF | 0.0 |
600 | 1919 | 0x077F | 0.0 |
1200 | 959 | 0x03BF | 0.0 |
2400 | 479 | 0x01DF | 0.0 |
4800 | 239 | 0x00EF | 0.0 |
9600 | 119 | 0x0077 | 0.0 |
14400 | 79 | 0x004F | 0.0 |
19200 | 59 | 0x003B | 0.0 |
28800 | 39 | 0x0027 | 0.0 |
38400 | 29 | 0x001D | 0.0 |
57600 | 19 | 0x0013 | 0.0 |
76800 | 14 | 0x000E | 0.0 |
115200 | 9 | 0x0009 | 0.0 |
230400 | 4 | 0x0004 | 0.0 |
20 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 4166 | 0x1046 | 0.0 |
600 | 2082 | 0x0822 | 0.0 |
1200 | 1041 | 0x0411 | 0.0 |
2400 | 520 | 0x0208 | 0.0 |
4800 | 259 | 0x0103 | 0.2 |
9600 | 129 | 0x0081 | 0.2 |
14400 | 86 | 0x0056 | 0.2 |
19200 | 64 | 0x0040 | 0.2 |
28800 | 42 | 0x002A | 0.9 |
38400 | 32 | 0x0020 | 1.4 |
57600 | 21 | 0x0015 | 1.4 |
76800 | 15 | 0x000F | 1.7 |
115200 | 10 | 0x000A | 1.4 |
230400 | 4 | 0x0004 | 7.8 |
30 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 6249 | 0x1869 | 0.0 |
600 | 3124 | 0x0C34 | 0.0 |
1200 | 1562 | 0x061A | 0.0 |
2400 | 780 | 0x030C | 0.0 |
4800 | 390 | 0x0186 | 0.0 |
9600 | 194 | 0x00C2 | 0.2 |
14400 | 129 | 0x0081 | 0.2 |
19200 | 97 | 0x0061 | 0.4 |
28800 | 64 | 0x0040 | 0.2 |
38400 | 48 | 0x0030 | 0.4 |
57600 | 32 | 0x0020 | 1.4 |
76800 | 23 | 0x0017 | 1.7 |
115200 | 15 | 0x000F | 1.7 |
230400 | 7 | 0x0007 | 1.7 |
32.768 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 6826 | 0x1AAA | 0.0 |
600 | 3412 | 0x0D54 | 0.0 |
1200 | 1706 | 0x06AA | 0.0 |
2400 | 852 | 0x0354 | 0.0 |
4800 | 426 | 0x01AA | 0.0 |
9600 | 212 | 0x00D4 | 0.2 |
14400 | 141 | 0x008D | 0.2 |
19200 | 106 | 0x006A | 0.3 |
28800 | 70 | 0x0046 | 0.2 |
38400 | 52 | 0x0034 | 0.6 |
57600 | 35 | 0x0023 | 1.2 |
76800 | 26 | 0x001A | 1.2 |
115200 | 17 | 0x0011 | 1.2 |
230400 | 8 | 0x0008 | 1.2 |
40 Mhz | |||
Baud Rate | UBRR (dec) | UBRR (hex) | % of error |
---|---|---|---|
300 | 8332 | 0x208C | 0.0 |
600 | 4166 | 0x1046 | 0.0 |
1200 | 2082 | 0x0822 | 0.0 |
2400 | 1041 | 0x0411 | 0.0 |
4800 | 520 | 0x0208 | 0.0 |
9600 | 259 | 0x0103 | 0.2 |
14400 | 173 | 0x00AD | 0.2 |
19200 | 129 | 0x0081 | 0.2 |
28800 | 86 | 0x0056 | 0.2 |
38400 | 64 | 0x0040 | 0.2 |
57600 | 42 | 0x002A | 0.9 |
76800 | 32 | 0x0020 | 1.4 |
115200 | 21 | 0x0015 | 1.4 |
230400 | 10 | 0x000A | 1.4 |
Legend: |
---|
UBRR out of range |
UBRR and clock speed are a perfect match |
UBRR and clock speed are less than 1% off |
UBRR and clock speed are between 1% and 2% off |
UBRR and clock speed are between 2% and 3% off |
UBRR and clock speed are between 3% and 5% off |
UBRR and clock speed is over 5% off |
I call this a "baud rate calculator", however, "baud rate" is technically an incorrect term. It should be called a "bit rate calculator". Because people misuse the term "baud" so frequently, many do not know there is a difference between "bit rate" and "baud rate". I use the term "baud rate" on the title, knowing it is wrong, so people would be able to find this page, when searching the web, however, all other references are as "bit rate".
NOTE about the UBRR register(s): Some AVRs only have a single UBRR register, while other AVRs have two UBRR registers. If your AVR has only 1 UBRR register, then you can check the box "Consider only 8-bit UBRR values as being valid" to have it show you when the UBRR value is out of range for your AVR. If your AVR handles a 12-bit UBRR value, then the UBRR value in hexadecimal will be helpful to you, because it will make it easier to find the UBRRH and UBRRL values (I'm sure you can figure out what goes where).
How to use this page:
Without entering anything, you can get a list of the UBRR settings for many popular
clock speeds, and serial port bit rates.
What makes this program special, is the fact
that you can tell it what serial port bit rate you want, and it will tell you all the possible
clock speeds that will generate your desired serial port bit rate.
You can also give it a clock speed, and it will tell you all the possible
serial port bit rates that can be producted with that clock speed.
This is very handy when you are searching through your "junk pile", looking for
the right crystal, or oscillator to generate a given serial port bit rate.
If you enter a serial port bit rate, not already listed, then the serial port bit rate will be listed as the
last entry on each clock speed table. If you enter a clock speed that is not already
listed, then a new clock speed table will be generated as the first table, with your clock speed.