HD6413008VF25 Datasheet, PDF (376/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

12. Serial Communication Interface
Bit 4—Parity Mode (O/E): Specifies whether even parity or odd parity is used for parity addition
and checking. The O/E bit setting is only valid when the PE bit is set to 1, enabling parity bit
addition and checking, in asynchronous mode. The O/E bit setting is ignored in synchronous
mode, or when parity addition 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.
Bit 3—Stop Bit Length (STOP): Selects one or two stop bits in asynchronous mode. This setting
is used only in asynchronous mode. In synchronous mode no stop bit is added, so the STOP bit
setting is ignored.
Bit 3
STOP
Description
0
1 stop bit*¹
(Initial value)
1
2 stop bits*²
Notes: 1. One stop bit (with value 1) is added to the end of each transmitted character.
2. Two stop bits (with value 1) are added to the end of each transmitted character.
In receiving, only the first stop bit is checked, regardless of the STOP bit setting. If the second
stop bit is 1, it is treated as a stop bit. If the second stop bit is 0, it is treated as the start bit of the
next incoming character.
Rev.4.00 Aug. 20, 2007 Page 330 of 638
REJ09B0395-0400