Z8FMC04100 ZILOG [Zilog, Inc.], Z8FMC04100 Datasheet - Page 297

• Manufacturer Part Number: Z8FMC04100
• Description: Z8 Encore-R Motor Control Flash MCUs
• Manufacturer: ZILOG [Zilog, Inc.]

PS024604-1005
(Output)
(Output)
TxD
DE
Figure 55 and Table 153 provide timing information for UART pins for the case where the
Clear To Send input signal (CTS) is not used for flow control. In this example, it is
assumed that the Driver Enable polarity has been configured to be Active Low and is rep-
resented here by DE. DE asserts after the UART Transmit Data Register has been written.
DE remains asserted for multiple characters as long as the Transmit Data Register is writ-
ten with the next character before the current character has completed.
Table 153. UART Timing without CTS
Parameter
T
T
1
2
Abbreviation
DE assertion to TxD falling edge (start)
delay
End of stop bit(s) to DE deassertion delay
Figure 55. UART Timing without CTS
T1
Start
P R E L I M I N A R Y
Bit 0
Bit 1
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Z8FMC16100 Series Flash MCU
Bit 7
1 x X
1 bit period
Minimum
Parity
IN
Product Specification
period
Delay (ns)
Stop
Stop Bit(s)
End of
2 x X
1 x X
1 bit period +
Maximum
T2
UART Timing
IN
IN
period
period
275