HC705C9AGRSSLASHD datasheet(84/157 Pages) NXP

номер детали	HC705C9AGRS/D

подробное описание детали	General Release Specification

PDF	157 Pages

Scroll/Zoom	100%

производитель	NXP [NXP Semiconductors]

домашняя страница	http://www.nxp.com

Logo

84 / 157 page

General Release Speciﬁcation

Data Format

MC68HC705C9A — Rev. 2.0

Serial Communications Interface (SCI)

9.7 Data Format

Receive data or transmit data is the serial data that is transferred to the

internal data bus from the receive data input pin (RDI) or from the

internal bus to the transmit data output pin (TDO). The

non-return-to-zero (NRZ) data format shown in Figure 9-3 is used and

must meet the following criteria:

•

The idle line is brought to a logic one state prior to

transmission/reception of a character.

•

A start bit (logic zero) is used to indicate the start of a frame.

•

The data is transmitted and received least significant bit first.

•

A stop bit (logic one) is used to indicate the end of a frame. A

frame consists of a start bit, a character of eight or nine data bits,

and a stop bit.

•

A break is defined as the transmission or reception of a low (logic

zero) for at least one complete frame time.

Figure 9-3. Data Format

IDLE LINE

012345678

STOP START

START

CONTROL BIT M SELECTS

8- OR 9-BIT DATA

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

HC705C9AGRS/D датащи(PDF) 84 Page - NXP Semiconductors