H8SLASH3021 datasheet(364/712 Pages) RENESAS

364 / 712 page

11. Serial Communication Interface

Rev.2.00 Mar. 22, 2007 Page 340 of 684

REJ09B0352-0200

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

Description

Even parity*

(Initial value)

Odd parity*

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

One stop bit*

(Initial value)

Two stop bits*

Notes: 1. One stop bit (with value 1) is added at the end of each transmitted character.

2. Two stop bits (with value 1) are added at 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.

H8/3021 Datasheet(PDF) 364 Page - Renesas Technology Corp