H8SLASH3021 datasheet(363/712 Pages) RENESAS

363 / 712 page

11. Serial Communication Interface

Rev.2.00 Mar. 22, 2007 Page 339 of 684

REJ09B0352-0200

Bit 7—Communication Mode (C/

A): Selects whether the SCI operates in asynchronous or

synchronous mode.

Bit 7

Description

Asynchronous mode

(Initial value)

Synchronous mode

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

8-bit data

(Initial value)

7-bit data*

Note:

When 7-bit data is selected, the MSB (bit 7) in TDR is not transmitted.

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

Description

Parity bit not added or checked

(Initial value)

Parity bit added and checked*

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.

H8/3021 Datasheet(PDF) 363 Page - Renesas Technology Corp