h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 502
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h8s-2635
Manufacturer Part Number
h8s-2635
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2635.pdf
(1547 pages)
- Current page: 502 of 1547
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Section 13 Serial Communication Interface (SCI)
13.2.5
SMR is an 8-bit register used to set the SCI’s serial transfer format and select the baud rate
generator clock source.
SMR can be read or written to by the CPU at all times.
SMR is initialized to H'00 by a reset and in hardware standby mode.
Bit 7—Communication Mode (C/
as the SCI operating mode.
Bit 6—Character Length (CHR): Selects 7 or 8 bits as the data length in asynchronous mode. In
clocked synchronous mode, a fixed data length of 8 bits is used regardless of the CHR setting.
Note: * When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted, and it is not possible
Rev. 6.00 Feb 22, 2005 page 442 of 1484
REJ09B0103-0600
Bit 7
C/
0
1
Bit 6
CHR
0
1
Bit
Initial value
R/W
A
to choose between LSB-first or MSB-first transfer.
Serial Mode Register (SMR)
Description
Asynchronous mode
Clocked synchronous mode
Description
8-bit data
7-bit data *
:
:
:
R/W
C/
7
0
CHR
R/W
6
0
A
) : Selects asynchronous mode or clocked synchronous mode
R/W
PE
5
0
R/W
O/
4
0
STOP
R/W
3
0
R/W
MP
2
0
CKS1
R/W
1
0
(Initial value)
(Initial value)
CKS0
R/W
0
0
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