ATA6614Q_14 Datasheet, PDF (186/311 Pages) ATMEL Corporation – 32K Flash Microcontroller with LIN Transceiver, 5V Regulator and Watchdog

Table 5-79. Examples of UBRRn Settings for Commonly Used Oscillator Frequencies (Continued)
Baud
Rate
(bps)
f_osc = 8.0000MHz
U2Xn = 0
U2Xn = 1
UBRRn Error UBRRn Error
2400
207
0.2%
416
-0.1%
4800
103
0.2%
207
0.2%
9600
51
0.2%
103
0.2%
14.4k
34
-0.8%
68
0.6%
19.2k
25
0.2%
51
0.2%
28.8k
16
2.1%
34
-0.8%
38.4k
12
0.2%
25
0.2%
57.6k
8
-3.5%
16
2.1%
76.8k
6
-7.0%
12
0.2%
115.2k
3
8.5%
8
-3.5%
230.4k
1
8.5%
3
8.5%
250k
1
0.0%
3
0.0%
0.5M
0
0.0%
1
0.0%
1M
–
–
0
0.0%
Max^.(1)
0.5Mbps
1Mbps
Note: 1. UBRRn = 0, Error = 0.0%
f_osc = 11.0592MHz
U2Xn = 0
U2Xn = 1
UBRRn Error UBRRn Error
287
0.0%
575
0.0%
143
0.0%
287
0.0%
71
0.0%
143
0.0%
47
0.0%
95
0.0%
35
0.0%
71
0.0%
23
0.0%
47
0.0%
17
0.0%
35
0.0%
11
0.0%
23
0.0%
8
0.0%
17
0.0%
5
0.0%
11
0.0%
2
0.0%
5
0.0%
2
-7.8%
5
-7.8%
–
–
2
-7.8%
–
–
–
–
691.2kbps
1.3824Mbps
f_osc = 14.7456MHz
U2Xn = 0
U2Xn = 1
UBRRn Error UBRRn Error
383
0.0%
767
0.0%
191
0.0%
383
0.0%
95
0.0%
191
0.0%
63
0.0%
127
0.0%
47
0.0%
95
0.0%
31
0.0%
63
0.0%
23
0.0%
47
0.0%
15
0.0%
31
0.0%
11
0.0%
23
0.0%
7
0.0%
15
0.0%
3
0.0%
7
0.0%
3
-7.8%
6
5.3%
1
-7.8%
3
-7.8%
0
-7.8%
1
-7.8%
921.6kbps
1.8432Mbps
Table 5-80. Examples of UBRRn Settings for Commonly Used Oscillator Frequencies (Continued)
Baud Rate (bps)
UBRRn
2400
416
4800
207
9600
103
14.4k
68
19.2k
51
28.8k
34
38.4k
25
57.6k
16
76.8k
12
115.2k
8
230.4k
3
250k
3
0.5M
1
1M
0
Note:
Max.⁽¹⁾
1. UBRRn = 0, Error = 0.0%
U2Xn = 0
1Mbps
f_osc = 16.0000MHz
Error
-0.1%
0.2%
0.2%
0.6%
0.2%
-0.8%
0.2%
2.1%
0.2%
-3.5%
8.5%
0.0%
0.0%
0.0%
UBRRn
832
416
207
138
103
68
51
34
25
16
8
7
3
1
U2Xn = 1
2Mbps
Error
0.0%
-0.1%
0.2%
-0.1%
0.2%
0.6%
0.2%
-0.8%
0.2%
2.1%
-3.5%
0.0%
0.0%
0.0%
186 ATA6614Q [DATASHEET]
9240H–AUTO–10/14