h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 464

• Manufacturer Part Number: h8s-2138
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 15 Serial Communication Interface (SCI, IrDA)
The BRR setting is found from the following equations.
Asynchronous mode:
Synchronous mode:
Where B: Bit rate (bits/s)
The bit rate error in asynchronous mode is found from the following equation:
Rev. 4.00 Jun 06, 2006 page 410 of 1004
REJ09B0301-0400
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
2
2
2n–1
Clock
2n–1
/4
/16
/64
(N + 1)
B
B
10
10
B
CKS1
0
0
1
1
6
6
– 1
– 1
10
64
6
SMR Setting
2
2n–1
CKS0
0
1
0
1
– 1
100
N 255)