Z8F082ASH020SC datasheet(104/244 Pages) ZILOG

104 / 244 page

PS024705-0405

P R E L I M I N A R Y

UART

Z8 Encore! XP® F08xA Seriess

Product Specification

Figure 10.UART Asynchronous Data Format without Parity

Figure 11.UART Asynchronous Data Format with Parity

Transmitting Data using the Polled Method

Follow these steps to transmit data using the polled method of operation:

1. Write to the UART Baud Rate High and Low Byte registers to set the required baud

rate.

2. Enable the UART pin functions by configuring the associated GPIO Port pins for

alternate function operation.

3. Write to the UART Control 1 register, if MULTIPROCESSOR mode is appropriate, to

enable MULTIPROCESSOR (9-bit) mode functions.

4. Set the Multiprocessor Mode Select (MPEN) bit to enable MULTIPROCESSOR mode.

5. Write to the UART Control 0 register to:

–

Set the transmit enable bit (TEN) to enable the UART for data transmission

–

Set the parity enable bit (PEN), if parity is appropriate and MULTIPROCESSOR

mode is not enabled, and select either even or odd parity (PSEL).

–

Set or clear the CTSE bit to enable or disable control from the remote receiver

using the CTS pin.

Start

Bit0

Bit1

Bit2

Bit3

Bit4

Bit5

Bit6

Bit7

Data Field

lsb

msb

Idle State

of Line

Stop Bit(s)

Start

Bit0

Bit1

Bit2

Bit3

Bit4

Bit5

Bit6

Bit7

Parity

Data Field

lsb

msb

Idle State

of Line

Stop Bit(s)

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