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Section 10 Serial Communication Interface
Rev. 6.00 Sep 12, 2006 page 304 of 526
REJ09B0326-0600
Bit Rate Register (BRR)
Bit
7 6 5 4 3 2 1 0
BRR7 BRR6 BRR5 BRR4 BRR3 BRR2 BRR1 BRR0
Initial
value 1 1 1 1 1 1 1 1
Read/Write
R/W R/W R/W R/W R/W R/W R/W R/W
BRR is an 8-bit register that designates the transmit/receive bit rate in accordance with the baud
rate generator operating clock selected by bits CKS1 and CKS0 of the serial mode register (SMR).
BRR can be read or written by the CPU at any time.
BRR is initialized to H'FF upon reset, and in standby, watch, subactive, or subsleep mode.
Table 10.6 shows examples of BRR settings in asynchronous mode. The values shown are for
active (high-speed) mode.
Table 10.6 Examples of BRR Settings for Various Bit Rates (Asynchronous Mode)
OSC
(MHz)
2
2.4576
4
4.194304
Bit Rate
(bits/s)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
n
N
Error
(%)
110
1 70 +0.03
1 86 +0.31
1 141
+0.03
1 148
–0.04
150
0 207
+0.16
0 255
0
1 103
+0.16
1 108
+0.21
300
0 103
+0.16
0 127
0
0 207
+0.16
0 217
+0.21
600
0 51 +0.16
0 63 0
0 103
+0.16
0 108
+0.21
1200 0 25 +0.16
0 31 0
0 51 +0.16
0 54 –0.70
2400 0 12 +0.16
0 15 0
0 25 +0.16
0 26 +1.14
4800
0 7 0
0 12 +0.16
0 13 –2.48
9600
0 3 0
0 6 –2.48
19200
0 1 0
31250 0 0 0
0 1 0
38400
0 0 0
Содержание F-ZTAT H8/3642A Series
Страница 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Страница 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Страница 21: ...Rev 6 00 Sep 12 2006 page xix of xx Appendix E Product Code Lineup 522 Appendix F Package Dimensions 524 ...
Страница 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Страница 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Страница 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Страница 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Страница 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Страница 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Страница 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...