h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 460
h8s-2169
Manufacturer Part Number
h8s-2169
Description
Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.H8S-2169.pdf
(1075 pages)
- Current page: 460 of 1075
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Section 15 Serial Communication Interface (SCI, IrDA)
15.2.5
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 standby mode, watch mode, subactive mode, subsleep
mode, and module stop mode.
Bit 7—Communication Mode (C/A A A A ): Selects asynchronous mode or synchronous mode as the
SCI operating mode.
Bit 7
C/A A A A
0
1
Bit 6—Character Length (CHR): Selects 7 or 8 bits as the data length in asynchronous mode. In
synchronous mode, a fixed data length of 8 bits is used regardless of the CHR setting.
Bit 6
CHR
0
1
Note:
Rev. 3.00 Jan 18, 2006 page 432 of 1044
REJ09B0280-0300
Bit
Initial value
Read/Write
* When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted, and LSB-
Serial Mode Register (SMR)
first/MSB-first selection is not available.
Description
Asynchronous mode
Synchronous mode
Description
8-bit data
7-bit data *
R/W
C/A
7
0
CHR
R/W
6
0
R/W
PE
5
0
R/W
O/E
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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