Table 16.6 Brr Settings For Various Bit Rates (Clocked Synchronous Mode); Table 16.7 Maximum Bit Rate With External Clock Input (Clocked Synchronous Mode) - Renesas H8S/2158 User Manual

Section 16 Serial Communication Interface (SCI, IrDA, and CRC)

Table 16.6 BRR Settings for Various Bit Rates (Clocked Synchronous Mode)

Bit
2
Rate
(bit/s) n N
110 3 70
250 2 124
500 1 249
1k 1 124
2.5k 0 199
5k 0 99
10k 0 49
25k 0 19
50k 0 9
100k 0 4
250k 0 1
0 *
500k 0
1M
2.5M
5M
Legend:
Blank: Cannot be set.
—: Can be set, but there will be a degree of error.
*: Continuous transfer or reception is not possible.

Table 16.7 Maximum Bit Rate with External Clock Input (Clocked Synchronous Mode)

External Input
φ φ φ φ (MHz)
Clock (MHz)
2 0.3333
4 0.6667
6 1.0000
8 1.3333
10 1.6667
Rev. 3.00 Jan 25, 2006 page 410 of 872
REJ09B0286-0300
Operating Frequency φ φ φ φ (MHz)
4 8
n N n N
— —
2 249 3 124
2 124 2 249
1 249 2 124
1 99 1 199
0 199 1 99
0 99 0 199
0 39 0 79
0 19 0 39
0 9 0 19
0 3 0 7
1 *
0 0 3
0 0 0 1
Maximum Bit
Rate (bit/s)
333333.3
666666.7
1000000.0
1333333.3
1666666.7
10 16
n N n N
— — 3 249
— — 3 124
— — 2 249
1 249 2 99
1 124 1 199
0 249 1 99
0 99 0 159
0 49 0 79
0 24 0 39
0 9 0 15
0 4 0 7
0 3
0 *
0
External Input
φ φ φ φ (MHz)
Clock (MHz)
12 2.0000
14 2.3333
16 2.6667
18 3.0000
20 3.3333
25 4.1667
20 25
n N n N
— —
— — 3 97
2 124 2 155
1 249 2 77
1 124 1 155
0 199 0 249
0 99 0 124
0 49 0 62
0 19 0 24
0 9 — —
0 4 — —
0 1 — —
0 *
0 — —
Maximum Bit
Rate (bit/s)
2000000.0
2333333.3
2666666.7
3000000.0
3333333.3
4166666.7