SH7764 Datasheet, PDF (573/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 15 Serial Communication Interface with FIFO (SCIF)
Table 15.7 indicates the maximum bit rates in asynchronous mode when the baud rate generator is
used. Table 15.8 lists the maximum bit rates in asynchronous mode when the external clock input
is used. Table 15.9 lists the maximum bit rates in clock synchronous mode when the external
clock input is used (when t_Scyc = 12t_pcyc*).
Note: * Make sure that the electrical characteristics of this LSI and that of a connected LSI are
satisfied.
Table 15.7 Maximum Bit Rates for Various Frequencies with Baud Rate Generator
(Asynchronous Mode)
Settings
Pch (MHz)
BGDM
ABCS
n
N
45
0
0
0
0
1
0
0
1
0
0
0
1
0
0
50
0
0
0
0
1
0
0
1
0
0
0
1
0
0
54
0
0
0
0
1
0
0
1
0
0
0
1
0
0
Maximum Bit
Rate (bits/s)
1406250
2812500
2812500
5625000
1562500
3125000
3125000
6250000
1687500
3375000
3375000
6750000
Table 15.8 Maximum Bit Rates with External Clock Input (Asynchronous Mode)
Pch (MHz)
45
50
54
External Input Clock (MHz)
11.2500
12.500
13.5000
Settings
ABCS
0
1
0
1
0
1
Maximum Bit
Rate (bits/s)
703125
1406250
781250
1562500
843750
1687500
Rev. 1.00 Nov. 22, 2007 Page 517 of 1692
REJ09B0360-0100