HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 447

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

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:
N: BRR setting for baud rate generator (0 N 255)
ø: Operating frequency (MHz)
n: Baud rate generator input clock (n = 0 to 3)
n
0
1
2
3
N =
Error (%) =
N =
(See the table below for the relation between n and the clock.)
64
8
Clock
ø
ø/4
ø/16
ø/64
2
2
2n–1
2n–1
(N + 1)
B
B
CKS1
0
0
1
1
10
B
10
6
6
10
64
– 1
– 1
SMR Setting
6
2
2n–1
CKS0
0
1
0
1
– 1
100
433