Rainbow-electronics ATmega8515L Manuel d'utilisateur télécharger pdf (Page 158)

158

ATmega8515(L)

2512A–AVR–04/02

Table 70. Examples ofUBRR SettingsforCommonly UsedOscillatorFrequencies(Continued)

Baud

Rate

(bps)

osc

= 8.0000 MHz f

osc

= 11.0592 MHz f

osc

= 14.7456 MHz

U2X=0U2X=1U2X=0U2X=1U2X=0U2X=1

UBRR Error UBRR Error UBRR Error UBRR Error UBRR Error UBRR Error

2400 207 0.2% 416-0.1% 287 0.0% 5750.0%383 0.0% 767 0.0%

4800 103 0.2% 207 0.2% 143 0.0% 287 0.0% 1910.0%383 0.0%

9600 51 0.2% 103 0.2%710.0% 143 0.0%950.0% 1910.0%

14.4k34 -0.8%680.6% 47 0.0%950.0%630.0% 127 0.0%

19.2k 25 0.2% 51 0.2%350.0%710.0% 47 0.0%950.0%

28.8k 16 2.1%34 -0.8% 23 0.0% 47 0.0%310.0%630.0%

38.4k 12 0.2% 25 0.2% 17 0.0%350.0% 23 0.0% 47 0.0%

57.6k 8 -3.5% 16 2.1% 11 0.0% 23 0.0% 15 0.0%310.0%

76.8k6-7.0% 12 0.2% 80.0% 17 0.0% 11 0.0% 23 0.0%

115.2k3 8.5% 8 -3.5% 50.0% 11 0.0%70.0% 15 0.0%

230.4k 18.5%38.5% 20.0% 50.0%30.0%70.0%

250k 10.0%30.0% 2 -7.8% 5 -7.8%3-7.8%6 5.3%

0.5M 00.0% 10.0% ––2-7.8% 1 -7.8%3-7.8%

1M ––00.0% ––––0-7.8% 1 -7.8%

Max.

(1)

0.5 Mbps 1 Mbps 691.2 kbps 1.3824 Mbps 921.6 kbps 1.8432 Mbps

1. UBRR = 0,Error=0.0%

1 2 ... 153 154 155 156 157 158 159 160 161 162 163 ... 222 223

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Rainbow-electronics ATmega8515L Manuel d'utilisateur Page 158