HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 468

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 12 Serial Communication Interface (SCI)
The BRR setting is found from the following formulas.
Asynchronous mode:
Clocked synchronous mode:
Where B: Bit rate (bit/s)
The bit rate error in asynchronous mode is found from the following formula:
Rev.3.00 Mar. 26, 2007 Page 426 of 772
REJ09B0355-0300
N: BRR setting for baud rate generator (0
n: Baud rate generator input clock (n = 0 to 3)
n
0
1
2
3
N =
N =
Error (%) = {
: Operating frequency (MHz)
(See the table below for the relation between n and the clock.)
64
8
Clock
2
/4
/16
/64
2
2n–1
2n–1
(N + 1)
B
B
CKS1
0
0
1
1
10
10
B
6
6
10
– 1
– 1
SMR Setting
64
6
2
CKS0
0
1
0
1
2n–1
– 1
N 255)
100