HD6417750RF240DV Datasheet, PDF (729/1132 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7750 Series

SH7750, SH7750S, SH7750R Group
Section 15 Serial Communication Interface (SCI)
The bit rate error in asynchronous mode is found from the following equation:
Pck × 10⁶
Error (%) = _{(N + 1) × B × 64 × 22n – 1} – 1 × 100
Table 15.3 shows sample SCBRR1 settings in asynchronous mode, and table 15.4 shows sample
SCBRR1 settings in synchronous mode.
Table 15.3 Examples of Bit Rates and SCBRR1 Settings in Asynchronous Mode
Bit Rate
(bits/s) n
110
1
150
1
300
0
600
0
1200
0
2400
0
4800
0
9600
0
19200 0
31250 0
38400 0
2
Error
N (%) n
141 0.03 1
103 0.16 1
207 0.16 0
103 0.16 0
51 0.16 0
25 0.16 0
12 0.16 0
6 –6.99 0
2 8.51 0
1 0.00 0
1
–18.62 0
Pck (MHz)
2.097152
2.4576
Error
Error
N (%) n N (%) n
148 –0.04 1 174 –0.26 1
108 0.21 1 127 0.00 1
217 0.21 0 255 0.00 1
108 0.21 0 127 0.00 0
54 –0.70 0 63 0.00 0
26 1.14 0 31 0.00 0
13 –2.48 0 15 0.00 0
6
–2.48 0 7
0.00 0
2
13.78 0 3
0.00 0
1
4.86 0 1
22.88 0
1
–14.67 0 1
0.00
3
Error
N (%)
212 0.03
155 0.16
77 0.16
155 0.16
77 0.16
38 0.16
19 –2.34
9 –2.34
4 –2.34
2 0.00
R01UH0456EJ0702 Rev. 7.02
Sep 24, 2013
Page 677 of 1076