US38024-BAG1 Renesas Electronics America, US38024-BAG1 Datasheet - Page 361

• Manufacturer Part Number: US38024-BAG1
• Description: DEV EVALUATION KIT H8/38024
• Manufacturer: Renesas Electronics America
• Series: H8®r
• Type: MCUr

Specifications of US38024-BAG1

• Contents: 2G (Second-generation) Evaluation Board, HEW debugger support, Cable and CD-ROM
• For Use With/related Products: H8/38024
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

10.2.5
SMR is an 8-bit register used to set the serial data transfer format and to select the clock source for
the baud rate generator.
SMR can be read or written by the CPU at any time.
SMR is initialized to H'00 upon reset, and in standby, module standby, or watch mode.
Bit 7—Communication Mode (COM)
Bit 7 selects whether SCI3 operates in asynchronous mode or synchronous mode.
Bit 7
COM
0
1
Bit 6—Character Length (CHR)
Bit 6 selects either 7 or 8 bits as the data length to be used in asynchronous mode. In synchronous
mode the data length is always 8 bits, irrespective of the bit 6 setting.
Bit 6
CHR
0
1
Notes: 1. When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted.
Bit
Initial value
Read/Write
2. When 5-bit data is selected, set both PE and MP to 1. The three most significant bits
Serial Mode Register (SMR)
(bits 7, 6, and 5) of TDR are not transmitted.
Description
Asynchronous mode
Synchronous mode
Description
8-bit data/5-bit data *
7-bit data *
COM
R/W
7
0
1
/5-bit data *
CHR
R/W
6
0
2
2
R/W
PE
5
0
R/W
PM
4
0
Section 10 Serial Communication Interface
Rev. 8.00 Mar. 09, 2010 Page 339 of 658
STOP
R/W
3
0
R/W
MP
2
0
CKS1
R/W
REJ09B0042-0800
1
0
(initial value)
(initial value)
CKS0
R/W
0
0