Table 14.6 Brr Settings For Various Bit Rates (Clocked Synchronous Mode); Table 14.7 Maximum Bit Rate With External Clock Input (Clocked Synchronous Mode) - Renesas H8S Series Hardware Manual

Section 14 Serial Communication Interface (SCI)

Table 14.6 BRR Settings for Various Bit Rates (Clocked Synchronous Mode)

4
Bit Rate
(bit/s) n N
110 — —
250 2 249
500 2 124
1k 1 249
2.5k 1 99
5k 0 199
10k 0 99
25k 0 39
50k 0 19
100k 0 9
250k 0 3
500k 0 1
0 *
1M 0
2.5M
5M
Legend:
Blank: Cannot be set.
—: Can be set, but there will be a degree of error.
Continuous transfer is not possible.
*:

Table 14.7 Maximum Bit Rate with External Clock Input (Clocked Synchronous Mode)

External Input
φ φ φ φ (MHz)
Clock (MHz)
4 0.6667
6 1.0000
8 1.3333
10 1.6667
12 2.0000
Rev. 6.00 Mar 15, 2006 page 336 of 570
REJ09B0211-0600
Operating Frequency φ φ φ φ (MHz)
8
n N n
3 124 —
2 249 —
2 124 —
1 199 1
1 99 1
0 199 0
0 79 0
0 39 0
0 19 0
0 7 0
0 3 0
0 1
0
Maximum Bit
φ φ φ φ (MHz)
Rate (bit/s)
666666.7 14
1.000000.0 16
1333333.3 18
1666666.7 20
2000000.0
10 16
N n N
— 3 249
— 3 124
— 2 249
249 2 99
124 1 199
249 1 99
99 0 159
49 0 79
24 0 39
9 0 15
4 0 7
0 3
0 *
External Input
Clock (MHz)
2.3333
2.6667
3.0000
3.3333
20
n N
— —
— —
2 124
1 249
1 124
0 199
0 99
0 49
0 19
0 9
0 4
0 1
0 *
0
Maximum Bit
Rate (bit/s)
2333333.3
2666666.7
3000000.0
3333333.3