HD64F2638F20J Datasheet, PDF (1436/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Appendix B Internal I/O Register
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
SMR0—Serial Mode Register 0
SMR1—Serial Mode Register 1
SMR2—Serial Mode Register 2
Bit
7
6
5
C/A
CHR
PE
Initial value
0
0
0
Read/Write R/W
R/W
R/W
H'FF78
H'FF80
H'FF88
SCI0
SCI1
SCI2
4
3
2
1
0
O/E STOP MP
CKS1 CKS0
0
0
0
0
0
R/W R/W R/W R/W R/W
Clock Select 1 and 0
0 0 φ clock
1 φ/4 clock
1 0 φ/16 clock
1 φ/64 clock
Multiprocessor Mode
0 Multiprocessor function disabled
1 Multiprocessor format selected
Stop Bit Length
0 1 stop bit: In transmission, a single 1 bit (stop bit)
is added to the end of a transmit
character before it is sent.
1 2 stop bits: In transmission, two 1 bits (stop bits)
are added to the end of a transmit
character before it is sent.
Parity Mode
0 Even parity*³
1 Odd parity*⁴
Parity Enable
0 Parity bit addition and checking disabled
1 Parity bit addition and checking enabled*²
Character Length
0 8-bit data
1 7-bit data*¹
Communication Mode
0 Asynchronous mode
1 Synchronous mode
Page 1386 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010