SH7059 Datasheet, PDF (459/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

The bit rate error in asynchronous mode is calculated as follows:
15. Serial Communication Interface (SCI)
⎧
Pφ × 10⁶
Error (%) = _{⎨⎩(N + 1) × B × 64 × 22n–1} – 1 × 100
Table 15.5 indicates the maximum bit rates in asynchronous mode when the baud rate generator is being used for various
frequencies. Tables 15.6 and 15.7 show the maximum rates for external clock input.
Table 15.5 Maximum Bit Rates for Various Frequencies with Baud Rate Generator (Asynchronous Mode)
Pφ (MHz)
10
11.0592
12
12.288
14
14.7456
16
17.2032
18
18.432
19.6608
20
Maximum Bit Rate (Bits/s)
n
312500
0
345600
0
375000
0
384000
0
437500
0
460800
0
500000
0
537600
0
562500
0
576000
0
614400
0
625000
0
Settings
N
0
0
0
0
0
0
0
0
0
0
0
0
Table 15.6 Maximum Bit Rates during External Clock Input (Asynchronous Mode)
Pφ (MHz)
10
11.0592
12
12.288
14
14.7456
16
17.2032
18
18.432
19.6608
20
External Input Clock (MHz)
2.5000
2.7648
3.0000
3.0720
3.5000
3.6864
4.0000
4.3008
4.5000
4.6080
4.9152
5.0000
Maximum Bit Rate (Bits/s)
156250
172800
187500
192000
218750
230400
250000
268800
281250
288000
307200
312500
Rev.3.00 Mar. 12, 2008 Page 369 of 948
REJ09B0177-0300