Z8F082ASH020SC datasheet(119/244 Pages) ZILOG

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PS024705-0405

P R E L I M I N A R Y

UART

Z8 Encore! XP® F08xA Seriess

Product Specification

101

COMP_ADDR—Compare Address

This 8-bit value is compared to incoming address bytes.

UART Baud Rate High and Low Byte Registers

The UART Baud Rate High and Low Byte registers (Tables 67 and 68) combine to create

a 16-bit baud rate divisor value (BRG[15:0]) that sets the data transmission rate (baud

rate) of the UART.

The UART data rate is calculated using the following equation:

For a given UART data rate, calculate the integer baud rate divisor value using the follow-

ing equation:

Table 66. UART Address Compare Register (U0ADDR)

BITS

FIELD

COMP_ADDR

RESET

000

R/W

R/WR/W

ADDR

F45H

Table 67. UART Baud Rate High Byte Register (U0BRH)

BITS

FIELD

BRH

RESET

111

R/W

R/WR/W

ADDR

F46H

Table 68. UART Baud Rate Low Byte Register (U0BRL)

BITS

FIELD

BRL

RESET

111

R/W

R/WR/W

ADDR

F47H

UART Baud Rate (bits/s)

System Clock Frequency (Hz)

UART Baud Rate Divisor Value

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