Z8F160x Zilog, Z8F160x Datasheet - Page 110
Z8F160x
Manufacturer Part Number
Z8F160x
Description
Z8 Encore / Microcontrollers with Flash Memory and 10 Bit A/D Converter
Manufacturer
Zilog
Datasheet
1.Z8F160X.pdf
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Table 57. UARTx Baud Rate Low Byte Register (UxBRL)
PS017610-0404
RESET
FIELD
ADDR
BITS
R/W
UART Baud Rate Divisor Value (BRG)
UART Baud Rate Error (%)
R/W
7
1
UART Baud Rate (bits/s)
The UART data rate is calculated using the following equation:
For a given UART data rate, the integer baud rate divisor value is calculated using the fol-
lowing equation:
The baud rate error relative to the desired baud rate is calculated using the following equa-
tion:
For reliable communication, the UART baud rate error must never exceed 5 percent.
Table 58 provides information on data rate errors for popular baud rates and commonly
used crystal oscillator frequencies.
R/W
6
1
R/W
5
1
=
=
100
--------------------------------------------------------------------------------------------- -
16 UART Baud Rate Divisor Value
R/W
F47H and F4FH
4
1
×
Z8F640x/Z8F480x/Z8F320x/Z8F240x/Z8F160x
×
System Clock Frequency (Hz)
⎛
⎝
BRL
=
Actual Data Rate Desired Data Rate
------------------------------------------------------------------------------------------------ -
Round
R/W
3
1
⎛
⎝
Desired Data Rate
System Clock Frequency (Hz)
--------------------------------------------------------------------------- -
16 UART Data Rate (bits/s)
×
R/W
2
1
–
R/W
1
1
Z8 Encore!
R/w
0
1
UART
⎞
⎠
⎞
⎠
®
92
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