Datasheet
Section 15 Serial Communication Interface (SCI) 
Rev. 6.00 Mar. 18, 2010 Page 575 of 982 
REJ09B0054-0600 
Operating Frequency φ (MHz) 
18
*
2
 19.6608
*
2
 20
*
2
Bit Rate 
(bps)
*
1
 n  N 
Error 
(%) 
n N 
Error 
(%) 
n N 
Error 
(%) 
110  3 79  –0.12   3  86  0.31   3  88  –0.25        
150  2 233 0.16 2 255 0.00 3 64 0.16      
300  2 116 0.16 2 127 0.00 2 129 0.16      
600  1 233 0.16 1 255 0.00 2 64 0.16      
1200  1 116 0.16 1 127 0.00 1 129 0.16      
2400  0 233 0.16 0 255 0.00 1 64 0.16      
4800  0 116 0.16 0 127 0.00 0 129 0.16      
9600  0 58  –0.69   0  63  0.00   0  64  0.16        
19200 0 28 1.02 0 31 0.00 0 32 –1.36       
31250  0  17  0.00   0  19  –1.70   0  19  0.00        
38400  0  14  –2.34   0  15  0.00   0  15  1.73        
Notes:  1.  Example when the SEMR0 register ABCS bit is 0. The bit rate is doubled when ABCS is 
set to 1. 
  2.  Supported only by the H8S/2239 Group. 
  3.  The H8S/2258 Group is out of operation. 










