r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 579

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

14.3.10 Bit Rate Register (SCBRR)
SCBRR is an 8-bit register that, together with the baud rate generator clock source selected by the
CKS1 and CKS0 bits in the serial mode register (SCSMR), determines the serial transmit/receive
bit rate.
The CPU can always read and write to SCBRR.
The SCBRR setting is calculated as follows:
• Asynchronous mode:
• Clock synchronous mode:
N =
N =
B:
N:
Pφ: Operating frequency for peripheral modules (MHz)
n:
8 × 2
64 × 2
Bit rate (bits/s)
SCBRR setting for baud rate generator (0 ≤ N ≤ 255)
(The setting value should satisfy the electrical characteristics.)
Baud rate generator clock source (n = 0, 1, 2, 3) (for the clock sources and values of
n, see table 14.3.)
Pφ
Pφ
2n-1
2n-1
Initial value:
× B
× B
× 10
R/W:
× 10
Bit:
6
R/W
6
7
1
- 1
- 1
R/W
6
1
R/W
5
1
R/W
4
1
Section 14 Serial Communication Interface (SCI)
R/W
3
1
Rev. 1.00 Sep. 21, 2007 Page 553 of 1124
R/W
2
1
R/W
1
1
R/W
0
1
REJ09B0402-0100