HD64F3028F25 Datasheet, PDF (489/925 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

For serial communication interface (SMIF bit in SCMR cleared to 0): Selects whether the SCI
operates in asynchronous or synchronous mode.
Bit 7
C/A
0
1
Description
Asynchronous mode
Synchronous mode
(Initial value)
For smart card interface (SMIF bit in SCMR set to 1): Selects GSM mode for the smart card
interface.
Bit 7
GM
Description
0
The TEND flag is set 12.5 etu after the start bit
1
The TEND flag is set 11.0 etu after the start bit
Note: etu (Elementary time unit: the time for transfer of one bit)
(Initial value)
Bit 6—Character Length (CHR): Selects 7-bit or 8-bits data length in asynchronous mode. In
synchronous mode, the data length is 8 bits regardless of the CHR setting,
Bit 6
CHR
Description
0
8-bit data
1
7-bit data^*
Note: * When 7-bit data is selected, the MSB (bit 7) of TDR is not transmitted.
(Initial value)
Bit 5—Parity Enable (PE): In asynchronous mode, this bit enables or disables the addition of a
parity bit to transmit data, and the checking of the parity bit in receive data. In synchronous mode,
the parity bit is neither added nor checked, regardless of the PE bit setting.
Bit 5
PE
Description
0
Parity bit not added or checked
1
Parity bit added and checked^*
(Initial value)
Note: * When PE bit is set to 1, an even or odd parity bit is added to transmit data according to the
even or odd parity mode selection by the O/E bit, and the parity bit in receive data is
checked to see that it matches the even or odd mode selected by the O/E bit.
Rev. 2.00, 09/03, page 457 of 890