Renesas F-ZTAT H8 Series Hardware Manual page 471

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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.

One stop bit *

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.

Bit 2—Multiprocessor Mode (MP): Selects a multiprocessor format. When a multiprocessor

format is selected, parity settings made by the PE and O/E bits are ignored. The MP bit setting is

valid only in asynchronous mode. It is ignored in synchronous mode.

For further information on the multiprocessor communication function, see section 13.3.3,

Multiprocessor Communication.

Multiprocessor function disabled

Multiprocessor format selected

Bits 1 and 0—Clock Select 1 and 0 (CKS1/0): These bits select the clock source of the on-chip

baud rate generator. Four clock sources are available: φ, φ/4, φ/16, and φ/64.

For the relationship between the clock source, bit rate register setting, and baud rate, see section

13.2.8, Bit Rate Register (BRR).

Section 13 Serial Communication Interface

Rev. 3.00 Mar 21, 2006 page 443 of 814

(Initial value)

REJ09B0302-0300