HD6473032F16 Datasheet, PDF (472/847 Pages) Renesas Technology Corp – Hardware Manual Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

Section 13 Serial Communication Interface
Bit 6—Character Length (CHR): Selects 7-bit or 8-bit 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) in 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 setting.
Bit 5: PE
Description
0
Parity bit not added or checked
1
Parity bit added and checked^*
(Initial value)
Note: * When PE is set to 1, an even or odd parity bit is added to transmit data according to the
even or odd parity mode selected 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.
Bit 4—Parity Mode (O/E): Selects even or odd parity. The O/E bit setting is valid in
asynchronous mode when the PE bit is set to 1 to enable the adding and checking of a parity bit.
The O/E setting is ignored in synchronous mode, or when parity adding and checking is disabled
in asynchronous mode.
Bit 4: O/E
Description
0
Even parity^*1
(Initial value)
1
Odd parity^*2
Notes: 1. When even parity is selected, the parity bit added to transmit data makes an even
number of 1s in the transmitted character and parity bit combined. Receive data must
have an even number of 1s in the received character and parity bit combined.
2. When odd parity is selected, the parity bit added to transmit data makes an odd number
of 1s in the transmitted character and parity bit combined. Receive data must have an
odd number of 1s in the received character and parity bit combined.
Rev. 3.00 Mar 21, 2006 page 442 of 814
REJ09B0302-0300